Practice Test 6 - 5th Grade Science
20 questions. Answer them in any order, then submit to see your score and every explanation.
- Based on the bar graph, what does it show about weight before and after mixing?
- Three white powders looked identical, so color didn't help. All three dissolved in water, so dissolving didn't help either. Only one powder fizzed when vinegar was added. Which property was most helpful for distinguishing the powders?
- Amir saw a puddle after rain; next day it was gone. When it disappeared from view, the particles...
- Earth's oceans are salt water; which reservoir is mostly fresh water stored underground?
- Based on the observations, Student A says, "A new substance formed because the mixture changed from clear to green." The student mixed 50 mL of blue sports drink with 50 mL of yellow sports drink. The temperature stayed at 20°C, no bubbles formed, and the smell stayed the same. Is Student A's reasoning correct?
- Chen notes: The sun looks brightest in daytime; stars are tiny points at night. The sun is 93 million miles away, while Betelgeuse is about 430 trillion miles away. Based on these observations, why is the sun brightest?
- Amir blows air into a limp balloon; it expands and feels firm. This observation is evidence that particles of matter...
- When you drop an apple from a tree, it moves toward Earth's surface. Which statement best connects the cause to the effect?
- Based on multiple properties, which liquid is most likely the yellow one? Data: Liquid A—clear, 50mL, 50g, no odor; Liquid B—clear yellow, 50mL, 60g, no odor; Liquid C—cloudy white, 50mL, 55g, slight odor.
- A cheetah eats meat; what does its body use that food energy for?
- How does a citywide composting program protect land resources using decomposition science?
- A class measured: melting 50g→50g, dissolving 110g→110g, freezing 200g→200g, mixing 80g→80g. Why?
- Students build a simple sundial and record hourly; which graph best represents shadow length changes?
- A student throws a ball straight up. After a moment, the ball slows down and comes back down. Why does it come back down?
- A coin is resting on your palm and does not fall. Gravity is still pulling on the coin. Why does the coin not fall while it is on your hand?
- A model shows sunlight reaching a plant's green leaves. Chlorophyll captures the light energy. Photosynthesis uses light, water, and carbon dioxide to make food (sugar) that stores energy. Arrows show sun → plant. According to the model, where does the plant get energy to make food?
- Two bean plants grew similarly: one in soil, one in water with dissolved minerals (no soil). Based on the evidence, most plant matter comes from what?
- The model demonstrates that plants get their energy from what original source?
- Chen sealed 50 g ice in a bag, melted it; how did weight after compare?
- In the flashlight experiment, why do farther stars appear dimmer from Earth?