Mixed Practice — Physical Science

Grade 7 Science — Mixed Practice — Physical Science: 25 practice questions with instant scoring and explanations.

1. Speed and velocity differ in that:
2. Newton's second law of motion states that:
3. Pressure is calculated as:
4. Friction opposes:
5. Sound travels through:
6. The frequency of sound determines:
7. Light is a form of:
8. Reflection occurs when light:
9. In a series circuit, if one bulb burns out:
10. Thermal energy moves from:
11. Evaporation increases when:
12. A state change from solid to liquid is called:
13. Density of water is unique because:
14. Boiling point of water at normal atmospheric pressure is:
15. Work is done when:
16. Power is the rate of:
17. Atoms consist of:
18. A compound differs from an element because a compound:
19. Chemical reactions involve:
20. An exothermic reaction:
21. pH scale measures:
22. Friction on moving objects can be reduced by:
23. Angle of incidence equals angle of reflection for:
24. An object in free fall experiences:
25. Elasticity in materials means: