Practice Test 9 - 5th Grade Science
20 questions. Answer them in any order, then submit to see your score and every explanation.
- How do plants store sunlight energy so they can use it later?
- Look at the bar graph of monthly daylight hours; when is daylight greatest?
- The data shows oceans 97% and lakes+rivers 0.01%; what pattern is supported?
- Two plants got equal water, air, and sunlight; sand-grown plant was paler; what materials are still essential?
- Four fabrics were all white and flexible, so color and flexibility didn't help distinguish them. Students dropped water on each: Fabric A absorbed in 2 seconds, Fabric B in 8 seconds, and Fabric C did not absorb (water beaded up). What made water absorption a good distinguishing property here?
- A student thinks plants are made mostly from soil because roots grow in dirt. But evidence shows soil mass barely changes as plants gain lots of mass, and plant dry mass is mostly carbon, oxygen, and hydrogen from CO₂ and water. Based on the evidence, where does most plant matter come from?
- Jamal researches local recycling by reading a brochure, city website, and touring the center; best sources?
- Students compared three rocks: Rock A (gray, hard, rough, 50 g, not magnetic, sinks), Rock B (reddish-brown, medium hardness, smooth, 35 g, not magnetic, sinks), and Rock C (gray-black, hard, shiny, 85 g, strongly magnetic, sinks). According to the data, which combination of properties best describes Rock C?
- Emma compares air-quality programs on a city site and an environmental website; best next step?
- Which statement best explains why soil is important but not most plant mass?
- Chen noticed a candle looked dim across the room; what is the star distance relationship?
- Objects fall because Earth pulls on them. Which best describes gravity?
- How does the Colorado River (hydrosphere) interacting with rock (geosphere) affect land over time?
- What does the table data show about how common fresh water is compared to salt water?
- Looking at the before and after data, a student mixed blue food coloring into clear water. What happened to the color?
- A class must support or refute the claim: Plants get most of the materials they need to grow from the soil. Evidence: Van Helmonts tree gained 164 lb while soil lost 0.1 lb; plants are 93% C, H, O; hydroponics works; plants without CO dont grow. Based on the evidence, what conclusion is best supported?
- How does a river (hydrosphere) carrying sediment affect land (geosphere) when flow slows?
- Two identical stars shine, but one is much farther from Earth. Which looks brighter, and why?
- In a sealed bottle, Jamal mixed 10 g baking soda + 50 g vinegar; after fizzing it was 60 g. Why?
- The model shows Sun → Tree → Squirrel. How does energy transfer to squirrel?