Practice Test 1 - 5th Grade Science
20 questions. Answer them in any order, then submit to see your score and every explanation.
- The explanation says plants convert light energy into what kind of stored energy?
- Chen stirred salt into water; the crystals disappeared from view. Where did the salt particles go?
- Based on the examples, answer the question. Example 1: Salt + water. Observations: no bubbles, no temperature change, tastes salty, and you can get salt back by evaporating the water. Example 2: Iron nail left in a wet place for many days. Observations: orange-brown coating forms, the surface becomes flaky, and it does not easily change back to shiny iron. Comparing these examples, which choice best explains why Example 2 formed a new substance but Example 1 did not?
- Plants in a chamber with no CO did not grow, but plants with extra CO grew larger. What does this evidence show about plant matter sources?
- Sofia weighed 60 g of ice in a sealed bag, then 60 g after melting; explain why.
- A penguin eats fish; how does it use the energy it gets from food?
- Students observe: a plant gains 200 g of mass while the soil loses only 2 g. They also learn plants are 93% C, H, O from air and water and can grow in hydroponics. Which argument is best supported by the evidence?
- According to the food chain, where does the rabbit get the energy it needs?
- In a garden bed, earthworms and bacteria decay old stems; how do decomposers return matter?
- Maya sealed 10 g baking soda and 50 g vinegar in a 100 g bottle; before 160 g, after 160 g. Why?
- According to Sun → Lettuce → Human, the energy humans use comes from what action?
- How does the model show the hydrosphere affects the geosphere during river erosion?
- According to the explanation, what form does sun energy take when stored in plants?
- A model shows water filtering through soil into groundwater; how do hydrosphere and geosphere interact?
- How does a city compost program use decomposition to reduce food waste impacts?
- Chen learns about tree planting by reading a news article, hearing the city forester, and visiting a park; best way?
- In a meadow, a grasshopper eats grass stems; which explains how matter is conserved?
- What is the original source of energy shown in this model?
- In science class, Chen observed a small metal object that was silver-gray, shiny, smooth, very heavy for its size, hard to scratch with a fingernail, and strongly attracted to a magnet. Which physical properties were observed about this material?
- Mystery objects were measured: ruler showed 8 cm, 6 cm, 10 cm; balance showed 75 g, 45 g, 120 g; magnet showed X and Z attracted. Which tool measured Object Z's length?