All questions
Question 1
A student says: “Weathering and erosion are the same thing because both make rocks smaller.” A paired model is shown:
Model X: Rock breaks into smaller pieces, but pieces remain in place.
Model Y: Pieces are carried by running water to a new location.
Both models note: “This happens over time.” Which statement best evaluates the student’s claim using the models?
- The claim is supported because both models show movement of pieces by water
- The claim is not supported because Model X shows weathering (breaking) and Model Y shows erosion (transport), which are different processes (correct answer)
- The claim is supported because erosion is the only process that can make rocks smaller
- The claim is not supported because both models actually show melting, which turns rock into liquid
Explanation: Earth processes shape materials by transforming rocks and sediments through various mechanisms over time. Melting turns solid rock into liquid magma under high heat, crystallization forms solid rock from cooling magma, weathering breaks down rocks into smaller pieces, and erosion transports those pieces to new locations. Melting changes the state from solid to liquid, crystallization reverses that by forming crystals in the solidifying material, weathering physically or chemically alters rocks without moving them, and erosion involves the movement of weathered materials by wind, water, or ice. To check which process is at work, first identify if the material is changing state, breaking apart in place, or being moved, then match it to melting, crystallization, weathering, or erosion. A common misconception is that weathering and erosion are the same, but weathering is the breaking down process, while erosion is the transportation of the broken materials. Earth materials often cycle through multiple processes, such as weathering and erosion leading to deposition, which can then lead to burial and melting. Over geological time, these cycles reshape the Earth's surface and interior continuously.
Question 2
A diagram shows a complete loop occurring over long periods of time:
Solid rock → (weathering) → sediment → (erosion) → sediment moved to a basin → (burial + heating) → melting to magma → (cooling) → crystallization to solid rock
Which claim is unsupported by the diagram?
- Weathering can change rock into smaller solid pieces without making it liquid
- Erosion can move sediment from one place to another
- Crystallization forms solid rock when magma cools over time
- Melting at Earth’s surface is the main cause of sand forming on beaches (correct answer)
Explanation: Earth processes shape materials by transforming rocks and sediments through various mechanisms over time. Melting turns solid rock into liquid magma under high heat, crystallization forms solid rock from cooling magma, weathering breaks down rocks into smaller pieces, and erosion transports those pieces to new locations. Melting changes the state from solid to liquid, crystallization reverses that by forming crystals in the solidifying material, weathering physically or chemically alters rocks without moving them, and erosion involves the movement of weathered materials by wind, water, or ice. To check which process is at work, first identify if the material is changing state, breaking apart in place, or being moved, then match it to melting, crystallization, weathering, or erosion. A common misconception is that weathering and erosion are the same, but weathering is the breaking down process, while erosion is the transportation of the broken materials. Earth materials often cycle through multiple processes, such as weathering and erosion leading to deposition, which can then lead to burial and melting. Over geological time, these cycles reshape the Earth's surface and interior continuously.
Question 3
A lava flow is shown in a before/after representation.
Before: Hot lava (liquid) flowing on the ground.
After (weeks to months later): A solid rock layer with visible crystals.
Arrows indicate “cooling” from the liquid lava to the solid rock, and the caption says “This change happens over time.” Which process best explains the formation of the solid rock layer?
- Crystallization, because cooling changes liquid lava into solid rock (correct answer)
- Weathering, because lava always breaks into pieces as it cools
- Erosion, because crystals form when wind carries lava away
- Melting, because cooling turns liquid into hotter liquid
Explanation: Earth processes shape materials by transforming rocks and sediments through various mechanisms over time. Melting turns solid rock into liquid magma under high heat, crystallization forms solid rock from cooling magma, weathering breaks down rocks into smaller pieces, and erosion transports those pieces to new locations. Melting changes the state from solid to liquid, crystallization reverses that by forming crystals in the solidifying material, weathering physically or chemically alters rocks without moving them, and erosion involves the movement of weathered materials by wind, water, or ice. To check which process is at work, first identify if the material is changing state, breaking apart in place, or being moved, then match it to melting, crystallization, weathering, or erosion. A common misconception is that weathering and erosion are the same, but weathering is the breaking down process, while erosion is the transportation of the broken materials. Earth materials often cycle through multiple processes, such as weathering and erosion leading to deposition, which can then lead to burial and melting. Over geological time, these cycles reshape the Earth's surface and interior continuously.
Question 4
A before/after representation shows a granite boulder on a hillside. After many years, the boulder is cracked into smaller angular pieces, but the pieces are still in the same place (not moved downhill). A label points to rainwater and freezing/thawing acting on the rock over time. Which process best explains the change shown?
- Weathering, because the rock breaks into smaller pieces without being transported (correct answer)
- Erosion, because broken rock always means it was carried away
- Crystallization, because cooling makes cracks form in surface rocks
- Melting, because rainwater dissolves the rock into liquid magma
Explanation: Earth processes shape materials by transforming rocks and sediments through various mechanisms over time. Melting turns solid rock into liquid magma under high heat, crystallization forms solid rock from cooling magma, weathering breaks down rocks into smaller pieces, and erosion transports those pieces to new locations. Melting changes the state from solid to liquid, crystallization reverses that by forming crystals in the solidifying material, weathering physically or chemically alters rocks without moving them, and erosion involves the movement of weathered materials by wind, water, or ice. To check which process is at work, first identify if the material is changing state, breaking apart in place, or being moved, then match it to melting, crystallization, weathering, or erosion. A common misconception is that weathering and erosion are the same, but weathering is the breaking down process, while erosion is the transportation of the broken materials. Earth materials often cycle through multiple processes, such as weathering and erosion leading to deposition, which can then lead to burial and melting. Over geological time, these cycles reshape the Earth's surface and interior continuously.
Question 5
A claim is written next to a diagram:
Rock cliff → (labeled “erosion”) → small rock fragments at the base of the same cliff (not moved away)
The diagram also includes a note: “This change happens over many years.” Which claim is incorrect based on the model and correct process meanings?
- The label “erosion” is incorrect because the change shown is breaking in place, which is weathering (correct answer)
- The rock fragments are still solid matter, just in smaller pieces
- The change can happen over time due to water, ice, or temperature changes
- The diagram shows a change in the rock’s size and shape over time
Explanation: Earth processes shape materials by transforming rocks and sediments through various mechanisms over time. Melting turns solid rock into liquid magma under high heat, crystallization forms solid rock from cooling magma, weathering breaks down rocks into smaller pieces, and erosion transports those pieces to new locations. Melting changes the state from solid to liquid, crystallization reverses that by forming crystals in the solidifying material, weathering physically or chemically alters rocks without moving them, and erosion involves the movement of weathered materials by wind, water, or ice. To check which process is at work, first identify if the material is changing state, breaking apart in place, or being moved, then match it to melting, crystallization, weathering, or erosion. A common misconception is that weathering and erosion are the same, but weathering is the breaking down process, while erosion is the transportation of the broken materials. Earth materials often cycle through multiple processes, such as weathering and erosion leading to deposition, which can then lead to burial and melting. Over geological time, these cycles reshape the Earth's surface and interior continuously.
Question 6
Diagram of two changes happening in different places over time:
Pathway 1 (inside Earth): Solid rock → (arrow: melting) → magma (liquid)
Pathway 2 (at surface): Solid rock → (arrow: weathering) → sediment (small pieces)
Which claim is incorrect based on the diagram?
- Melting changes solid rock into a liquid magma.
- Weathering changes solid rock into smaller solid pieces called sediment.
- Weathering and melting are the same process because both happen when rock contacts water. (correct answer)
- Both pathways show changes that happen over time.
Explanation: Understanding how Earth processes shape materials is a core skill in studying our planet's dynamic systems. Key processes include melting, which liquefies solid rock into magma; crystallization, which solidifies magma into rock; weathering, which disintegrates rocks at the surface; and erosion, which relocates the resulting particles. Each process transforms materials uniquely: melting applies heat to change solids to liquids, crystallization cools liquids to form structured solids, weathering breaks down rocks in situ through physical or chemical means, and erosion shifts materials via agents like water or wind. To determine the process involved, first observe the specific alteration in the material's state or position, then align it with the matching process description. A frequent misconception is equating weathering with erosion, but weathering only fragments materials without displacement, whereas erosion specifically involves their transport. Over vast timescales, Earth materials undergo multiple processes in cycles, such as sediment from erosion burying deep, melting into magma, and crystallizing into new rock formations. This ongoing rock cycle illustrates how interconnected processes continually reshape Earth's materials.
Question 7
Diagram: A rock on a hillside changes over time.
[Time 1] Solid rock with cracks
↓ (labeled: weathering over time)
[Time 2] Many small rock pieces (sediment) still on the hillside
↓ (labeled: erosion by moving water)
[Time 3] Sediment pile at the bottom of the hill
Which statement is supported by the diagram about how Earth materials change over time?
- Weathering breaks the rock into smaller pieces, and erosion moves those pieces to a new location over time. (correct answer)
- Erosion breaks the rock into smaller pieces, and weathering carries those pieces downhill over time.
- The rock disappears during weathering, so there is less matter at the bottom of the hill over time.
- The changes happen instantly once water touches the rock, so time is not important.
Explanation: Understanding how Earth processes shape materials is a core skill in studying our planet's dynamic systems. Key processes include melting, which liquefies solid rock into magma; crystallization, which solidifies magma into rock; weathering, which disintegrates rocks at the surface; and erosion, which relocates the resulting particles. Each process transforms materials uniquely: melting applies heat to change solids to liquids, crystallization cools liquids to form structured solids, weathering breaks down rocks in situ through physical or chemical means, and erosion shifts materials via agents like water or wind. To determine the process involved, first observe the specific alteration in the material's state or position, then align it with the matching process description. A frequent misconception is equating weathering with erosion, but weathering only fragments materials without displacement, whereas erosion specifically involves their transport. Over vast timescales, Earth materials undergo multiple processes in cycles, such as sediment from erosion burying deep, melting into magma, and crystallizing into new rock formations. This ongoing rock cycle illustrates how interconnected processes continually reshape Earth's materials.
Question 8
A student draws this sequence for a rock cycle pathway:
Sediment at surface
↓ (arrow labeled: melting)
Magma (liquid)
↓ (arrow labeled: crystallization)
Igneous rock (solid)
Which change would make the model more accurate based on how processes work over time?
- Replace 'melting' with 'weathering', because weathering turns sediment into magma.
- Remove crystallization, because magma becomes solid rock without any process.
- Add a step showing sediment becoming solid rock first, since melting acts on solid rock rather than loose sediment. (correct answer)
- Change the arrows to show the whole sequence happens instantly, not over time.
Explanation: Understanding how Earth processes shape materials is a core skill in studying our planet's dynamic systems. Key processes include melting, which liquefies solid rock into magma; crystallization, which solidifies magma into rock; weathering, which disintegrates rocks at the surface; and erosion, which relocates the resulting particles. Each process transforms materials uniquely: melting applies heat to change solids to liquids, crystallization cools liquids to form structured solids, weathering breaks down rocks in situ through physical or chemical means, and erosion shifts materials via agents like water or wind. To determine the process involved, first observe the specific alteration in the material's state or position, then align it with the matching process description. A frequent misconception is equating weathering with erosion, but weathering only fragments materials without displacement, whereas erosion specifically involves their transport. Over vast timescales, Earth materials undergo multiple processes in cycles, such as sediment from erosion burying deep, melting into magma, and crystallizing into new rock formations. This ongoing rock cycle illustrates how interconnected processes continually reshape Earth's materials.
Question 9
Before/after representations show a lava flow at the surface.
BEFORE: Lava (liquid) flowing
↓ (arrow labeled: cooling at the surface over time)
AFTER: Dark solid rock layer
What would most likely happen if, instead of cooling, the solid rock layer later experienced strong weathering and erosion over a long time?
- The solid rock would break into smaller pieces and some of those pieces would be transported away. (correct answer)
- The solid rock would turn back into lava without needing heat.
- The solid rock would form crystals only if it were carried downstream by a river.
- The solid rock would disappear completely, leaving no sediment behind.
Explanation: Understanding how Earth processes shape materials is a core skill in studying our planet's dynamic systems. Key processes include melting, which liquefies solid rock into magma; crystallization, which solidifies magma into rock; weathering, which disintegrates rocks at the surface; and erosion, which relocates the resulting particles. Each process transforms materials uniquely: melting applies heat to change solids to liquids, crystallization cools liquids to form structured solids, weathering breaks down rocks in situ through physical or chemical means, and erosion shifts materials via agents like water or wind. To determine the process involved, first observe the specific alteration in the material's state or position, then align it with the matching process description. A frequent misconception is equating weathering with erosion, but weathering only fragments materials without displacement, whereas erosion specifically involves their transport. Over vast timescales, Earth materials undergo multiple processes in cycles, such as sediment from erosion burying deep, melting into magma, and crystallizing into new rock formations. This ongoing rock cycle illustrates how interconnected processes continually reshape Earth's materials.
Question 10
A student looks at a model showing sand grains being moved by wind from one location and piling up in another location. Which statement is supported by the model?
Processes act over time.
- Erosion moves sediment from one place to another. (correct answer)
- Weathering always requires moving water to carry sediment away.
- Melting breaks rocks into sand grains at Earth’s surface.
- Crystallization turns solid rock into liquid that can flow.
Explanation: Understanding Earth processes that shape materials involves recognizing how erosion functions as a transport mechanism. Erosion is the process by which weathered rock particles, sediment, or soil are picked up and carried from one location to another by moving agents like wind, water, or ice. Unlike weathering which breaks materials apart in place, erosion specifically involves movement and relocation of particles. To identify erosion, look for evidence of material being transported from its original location to a new one. A common misconception is confusing weathering (breaking) with erosion (moving), but they are distinct processes that often work together. Over geological time, erosion plays a crucial role in shaping landscapes by moving billions of tons of material from mountains to valleys and eventually to the ocean.
Question 11
A claim is written next to a model of a boulder that becomes smaller pieces in the same location: “The boulder got smaller because erosion broke it apart.” Based on the model, which evaluation is correct?
Processes act over time.
- Correct, because erosion means any change caused by water.
- Incorrect, because weathering breaks rock apart while erosion moves the pieces. (correct answer)
- Correct, because crystallization always happens when rocks break.
- Incorrect, because melting is the only process that can change rock size.
Explanation: Accurately identifying Earth processes that shape materials requires understanding the precise definitions of weathering and erosion. Weathering is the process that breaks rock into smaller pieces through physical forces or chemical reactions, with the key characteristic being that pieces remain in their original location. Erosion, by contrast, is the movement of already-weathered material from one place to another by agents like water, wind, or ice. To evaluate claims about these processes, check whether the description matches the definition: breaking in place equals weathering, while movement equals erosion. The most common misconception is attributing the breaking of rock to erosion, when erosion only transports already-broken material. Throughout Earth's history, weathering and erosion work together in cycles, breaking down mountains and redistributing materials across the planet's surface.
Question 12
A pathway model shows arrows connecting steps over time:
- Solid rock underground
↓ (arrow labeled melting)
- Liquid magma
↓ (arrow labeled crystallization)
- Solid igneous rock at the surface
↓ (arrow labeled weathering)
- Sediment (small rock pieces)
↓ (arrow labeled erosion by wind)
- Sand dune deposit
Which sequence of processes best explains how the sand dune deposit could form from the original solid rock?
- Weathering → erosion → melting → crystallization
- Melting → crystallization → weathering → erosion (correct answer)
- Crystallization → melting → erosion → weathering
- Erosion → weathering → crystallization → melting
Explanation: The core skill is understanding how various Earth processes shape and transform materials over time. Melting turns solid rock into liquid magma, crystallization forms solid rock from cooling magma, weathering breaks down rocks into smaller pieces, and erosion transports those pieces to new locations. Each process alters materials in unique ways: melting involves heat to change state from solid to liquid, crystallization is the cooling that forms crystals in solid rock, weathering physically or chemically disintegrates rocks without moving them, and erosion involves agents like water or wind to move the weathered materials. To check understanding, first identify the specific change occurring in the material, such as breaking apart, moving, melting, or solidifying, and then match it to the appropriate process. A common misconception is that weathering and erosion are the same, but weathering only breaks down the rock in place, while erosion moves the broken pieces away. Earth materials often cycle through multiple processes, such as a rock melting, crystallizing into igneous rock, then weathering and eroding to form sediment that can later form new rocks. This cycling happens over geological time scales, continuously shaping the Earth's surface and interior.
Question 13
A claim is written next to a process diagram:
Diagram (over time):
Solid rock →(weathering)→ sediment →(erosion)→ sediment deposited in a delta
Claim: “The sediment reached the delta because weathering carried it there.”
Which statement best evaluates the claim using the diagram?
- The claim is supported because weathering always includes moving sediment to new places over time.
- The claim is not supported because erosion is the process that transports sediment to the delta over time. (correct answer)
- The claim is supported because crystallization forms the delta from liquid sediment over time.
- The claim is not supported because melting must happen before any sediment can form over time.
Explanation: The core skill is understanding how various Earth processes shape and transform materials over time. Melting turns solid rock into liquid magma, crystallization forms solid rock from cooling magma, weathering breaks down rocks into smaller pieces, and erosion transports those pieces to new locations. Each process alters materials in unique ways: melting involves heat to change state from solid to liquid, crystallization is the cooling that forms crystals in solid rock, weathering physically or chemically disintegrates rocks without moving them, and erosion involves agents like water or wind to move the weathered materials. To check understanding, first identify the specific change occurring in the material, such as breaking apart, moving, melting, or solidifying, and then match it to the appropriate process. A common misconception is that weathering and erosion are the same, but weathering only breaks down the rock in place, while erosion moves the broken pieces away. Earth materials often cycle through multiple processes, such as a rock melting, crystallizing into igneous rock, then weathering and eroding to form sediment that can later form new rocks. This cycling happens over geological time scales, continuously shaping the Earth's surface and interior.
Question 14
A cross-section diagram shows:
- Deep underground: solid rock
- A hot zone where an arrow labeled melting points to liquid magma
- Higher up: an arrow labeled crystallization points to solid igneous rock
- At the surface: an arrow labeled weathering points to sediment
The diagram notes that each step happens over time.
Which material change in the diagram is correctly matched to its process?
- Weathering: liquid magma changes into solid rock over time.
- Melting: solid rock changes into liquid magma over time. (correct answer)
- Crystallization: solid rock breaks into sediment over time.
- Erosion: solid rock changes into liquid magma over time.
Explanation: The core skill is understanding how various Earth processes shape and transform materials over time. Melting turns solid rock into liquid magma, crystallization forms solid rock from cooling magma, weathering breaks down rocks into smaller pieces, and erosion transports those pieces to new locations. Each process alters materials in unique ways: melting involves heat to change state from solid to liquid, crystallization is the cooling that forms crystals in solid rock, weathering physically or chemically disintegrates rocks without moving them, and erosion involves agents like water or wind to move the weathered materials. To check understanding, first identify the specific change occurring in the material, such as breaking apart, moving, melting, or solidifying, and then match it to the appropriate process. A common misconception is that weathering and erosion are the same, but weathering only breaks down the rock in place, while erosion moves the broken pieces away. Earth materials often cycle through multiple processes, such as a rock melting, crystallizing into igneous rock, then weathering and eroding to form sediment that can later form new rocks. This cycling happens over geological time scales, continuously shaping the Earth's surface and interior.
Question 15
A model shows this happening over time:
Solid volcanic rock (on the surface)
↓ (weathering)
Sediment (small rock pieces)
What would most likely happen if, instead of weathering, melting acted on the volcanic rock?
- The rock would turn into smaller solid pieces without changing into a liquid.
- The rock would move downhill as sediment without breaking apart first.
- The rock would become liquid magma/lava, changing from solid to liquid. (correct answer)
- The rock would disappear because melting destroys matter.
Explanation: Predicting how Earth processes shape materials requires understanding what each process does to rock. Weathering breaks solid rock into smaller solid pieces without changing its state, erosion moves solid materials to new locations, melting changes solid rock into liquid magma or lava, and crystallization changes liquid back to solid. If melting acted on volcanic rock instead of weathering, the solid rock would transform into liquid magma or lava rather than breaking into solid pieces. To predict process outcomes, consider whether the material changes state (melting/crystallization) or remains solid while changing size or location (weathering/erosion). Students often think weathering involves melting, but weathering keeps materials solid while breaking them apart. Earth materials can follow different pathways depending on which processes act upon them, creating diverse rock types and landforms.
Question 16
A before/after model shows a granite boulder that, over many years, develops cracks and breaks into smaller angular pieces that stay at the same hillside location. No arrows show movement away from the spot.
Which process best explains the change from the boulder to the smaller pieces?
- Weathering, because the rock is breaking into smaller pieces in place over time. (correct answer)
- Erosion, because rock pieces are always moved downhill when they get smaller.
- Crystallization, because crystals form when rock breaks into fragments at Earth’s surface.
- Melting, because the rock must turn into a liquid before it can split apart.
Explanation: Understanding how Earth processes shape materials requires distinguishing between different types of changes. Weathering breaks solid rock into smaller pieces without moving them, erosion transports materials from one place to another, crystallization forms solid crystals from cooling liquids, and melting changes solids to liquids. When rock breaks into smaller pieces that remain in the same location, weathering is occurring through physical forces like freeze-thaw cycles or chemical reactions. To identify the correct process, check whether the material moved (erosion) or stayed in place while breaking apart (weathering). Many students confuse weathering and erosion, but weathering is the breaking process while erosion is the moving process. Earth's surface materials are constantly being reshaped through these processes acting over long time periods.
Question 17
A student looks at a model showing a cliff that gradually becomes rounded and smaller as pieces break off, and arrows show those pieces being carried away by waves over many years.
Which statement is unsupported by the model?
- Weathering can break the cliff rock into smaller pieces over time.
- Erosion can transport the broken pieces away from the cliff by moving water.
- Crystallization is responsible because crystals form instantly and push the pieces into the ocean. (correct answer)
- The cliff’s shape can change over time as rock is broken and moved.
Explanation: Evaluating models of how Earth processes shape materials requires matching observations to correct process definitions. Weathering breaks solid rock into smaller pieces through physical or chemical means, erosion transports those pieces away through agents like waves, while crystallization forms solid crystals from cooling liquid rock over time, not instantly. Crystallization cannot push rock pieces into the ocean - it's a solidification process, not a force that moves existing solid materials. To identify unsupported statements, check if the described process matches its scientific definition and the model's evidence. A common misconception is attributing multiple unrelated actions to a single process like crystallization. Earth's coastal landscapes change through the combined action of weathering breaking rock and erosion removing the pieces, reshaping coastlines over thousands of years.
Question 18
A process diagram shows:
Lava (liquid) on the surface
↓ (cools over time)
Solid rock with visible crystals
Which process best explains the change shown?
- Weathering, because cooling causes rock to crack into sediment.
- Crystallization, because a liquid cools and forms solid crystals over time. (correct answer)
- Erosion, because the lava is being carried away by wind and water.
- Melting, because the lava is turning from liquid into solid.
Explanation: Understanding how Earth processes shape materials requires recognizing phase changes and their causes. Crystallization occurs when liquid rock (magma or lava) cools and forms solid crystals, weathering breaks solid rock into smaller pieces, erosion transports materials to new locations, and melting changes solids into liquids. When lava cools at Earth's surface, minerals crystallize from the liquid state into solid rock with visible crystal structures. To identify the correct process, examine the starting and ending states: liquid cooling to solid indicates crystallization. A common misconception is thinking melting means liquid turning to solid, but melting actually means solid turning to liquid - the opposite of what's shown. Earth materials cycle between liquid and solid states through melting and crystallization, fundamental processes in forming igneous rocks.
Question 19
A model shows this sequence happening over time:
Solid rock on a mountain
↓ (weathering)
Loose sediment on the slope
↓ (erosion)
Sediment carried by a river
↓ (deposition)
Sand bar forms downstream
Which claim is incorrect based on the model?
- Weathering can produce sediment by breaking rock into smaller pieces.
- Erosion can move sediment from one place to another, such as by a river.
- Weathering and erosion are the same process because both involve sediment. (correct answer)
- The sand bar forms after sediment is transported and then deposited.
Explanation: Identifying how Earth processes shape materials involves understanding each process's unique role. Weathering physically or chemically breaks solid rock into smaller pieces called sediment, while erosion moves that sediment from one location to another through agents like water, wind, or ice. These are distinctly different processes - weathering creates sediment by breaking rock apart, and erosion transports it elsewhere. To evaluate claims about Earth processes, match each described change to its correct definition: breaking = weathering, moving = erosion. The most common misconception is thinking weathering and erosion are the same because they often work together, but they are separate sequential processes. Earth materials undergo multiple transformations as they move through the rock cycle, with each process playing a specific role in shaping our planet's surface.
Question 20
A model shows a rock at Earth’s surface that is broken into sediment (no movement shown). Then arrows show the sediment being carried by a stream to a new location.
Which comparison is supported by the model?
- Weathering breaks rock into sediment, while erosion moves sediment to a different place over time. (correct answer)
- Erosion breaks rock into sediment, while weathering moves sediment to a different place over time.
- Melting breaks rock into sediment, while crystallization moves sediment to a different place over time.
- Weathering and erosion both require the rock to melt first, then the liquid flows away.
Explanation: Understanding how Earth processes shape materials requires distinguishing between breaking and moving actions. Weathering is the process that breaks solid rock into smaller pieces called sediment without moving it, while erosion is the process that transports sediment from one location to another through agents like streams, wind, or ice. These processes work sequentially - weathering must create sediment before erosion can move it elsewhere. To verify process identification, check if material is breaking apart (weathering) or being transported (erosion) in each part of the model. The most persistent misconception is reversing these definitions, thinking erosion breaks rock and weathering moves it. Earth's surface is continuously reshaped as weathering creates new sediment and erosion redistributes it across the landscape over time.