1. | The law of conservation of energy states that when one form of energy is converted to another, SOME energy is destroyed. |
A. |
B. |
2. | Newtons second law of motion states the relationship of mass, acceleration and force. It says that.... |
A. |
B. |
C. |
D. |
3. | A girl throws a ball 15m into the air. The ball has a maximum potential energy at a height of |
A. |
B. |
C. |
D. |
4. | An electric blanket converts electrical energy to |
A. |
B. |
C. |
D. |
5. | On the Celcius scale, the number 0 is assigned to the temperatures at which water condenses. |
A. |
B. |
6. | Power is the rate at which energy is lost. |
A. |
B. |
7. | The force of friction acts between all objects in the universe. |
A. |
B. |
8. | Temperature is a measure of the average potential energy of each particle within an object. |
A. |
B. |
9. | A rubber band that is flying across the room is moving because it has kinetic energy. |
A. |
B. |
10. | The formula, Work/ Time (Work divided by Time) is used to calculate |
A. |
B. |
C. |
D. |
11. | A (n) ______________ can cause an objects motion to change |
A. |
B. |
C. |
D. |
12. | Jake and Tom want to see who is strogest, so they got a rope and decided to play tug-o-war. Both boys pulled at the rope with all of their strength, but neither of them moved. This is called unbalanced force. |
A. |
B. |
13. | Patty was walking very quickly through the cafeteria with her tray full of food when she tripped over a broomstick and flew forward along with all of her food. This is an example of Newton's first law of motion which states, "...an obect in motion will stay in motion..." |
A. |
B. |
14. | A moving object can do work so it has potential energy. |
A. |
B. |
15. | The force exerted by gravity is stronger if two objects are closer. |
A. |
B. |
16. | An object cannot be accelerating if it is changing direction. |
A. |
B. |
17. | Elastic potential energy is associated with objects that can be stretched. |
A. |
B. |
18. | Unless an object at rest is acted upon by a force, it stays at rest due to its |
A. |
B. |
C. |
D. |
19. | A rider finishes a 120 km bicycle trip in 3 hours. The average speed of the rider is.... |
A. |
B. |
C. |
D. |
20. | Match the sentence with the apropriate word. |
21. | The state of a substance depends ont he amound of thermal energy it posesses. |
A. |
B. |
22. | The amount of matter in an object is called its |
A. |
B. |
C. |
D. |
23. | Kinetic energy depends on |
A. |
B. |
C. |
D. |
24. | According to Newton;s second law of motion, acceleration increases as force increases, if mass stays the same. |
A. |
B. |
25. | A(n) ___________ causes objects to move in a circle |
A. |
B. |
C. |
D. |
26. | Potential energy is the energy |
A. |
B. |
C. |
D. |
27. | Your body converts chemical energy to all of the following EXCEPT |
A. |
B. |
C. |
D. |
28. | Match the sentence with the apropriate word. |
29. | An airplane that moves 50 meters in one second has a speed of.... |
A. |
B. |
C. |
D. |
30. | A satellite in orbit around Earth is always falling toward Earth. |
A. |
B. |
31. | The energy stored in fossil fuels is released by burning. |
A. |
B. |
32. | Friction acts in a direction __________ to the direction of an object's motion |
A. |
B. |
C. |
D. |
33. | Plants convert electromagnetic energy to chemical energy. |
A. |
B. |
34. | Forces can be added together on if they are acting on different objects. |
A. |
B. |
35. | Work is the transfer of energy. |
A. |
B. |
36. | A 10-kg ball is accelerated 500m/s (squared) by a force of... |
A. |
B. |
C. |
D. |
37. | Potential energy that depends on height is gravitational potential energy. |
A. |
B. |