1. | Friction acts in a direction __________ to the direction of an object's motion |
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2. | Unless an object at rest is acted upon by a force, it stays at rest due to its |
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3. | According to Newton;s second law of motion, acceleration increases as force increases, if mass stays the same. |
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4. | Match the sentence with the apropriate word. |
5. | Your body converts chemical energy to all of the following EXCEPT |
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6. | A 10-kg ball is accelerated 500m/s (squared) by a force of... |
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7. | An electric blanket converts electrical energy to |
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8. | On the Celcius scale, the number 0 is assigned to the temperatures at which water condenses. |
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9. | Newtons second law of motion states the relationship of mass, acceleration and force. It says that.... |
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10. | Temperature is a measure of the average potential energy of each particle within an object. |
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11. | The formula, Work/ Time (Work divided by Time) is used to calculate |
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12. | The energy stored in fossil fuels is released by burning. |
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13. | Potential energy that depends on height is gravitational potential energy. |
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14. | A (n) ______________ can cause an objects motion to change |
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15. | Kinetic energy depends on |
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16. | A rider finishes a 120 km bicycle trip in 3 hours. The average speed of the rider is.... |
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17. | 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..." |
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18. | A moving object can do work so it has potential energy. |
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19. | The law of conservation of energy states that when one form of energy is converted to another, SOME energy is destroyed. |
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20. | Potential energy is the energy |
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21. | Power is the rate at which energy is lost. |
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22. | A girl throws a ball 15m into the air. The ball has a maximum potential energy at a height of |
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23. | An object cannot be accelerating if it is changing direction. |
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24. | The state of a substance depends ont he amound of thermal energy it posesses. |
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25. | A satellite in orbit around Earth is always falling toward Earth. |
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26. | Work is the transfer of energy. |
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27. | Match the sentence with the apropriate word. |
28. | Forces can be added together on if they are acting on different objects. |
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29. | A(n) ___________ causes objects to move in a circle |
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30. | An airplane that moves 50 meters in one second has a speed of.... |
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31. | Plants convert electromagnetic energy to chemical energy. |
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32. | The force of friction acts between all objects in the universe. |
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33. | The amount of matter in an object is called its |
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34. | 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. |
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35. | Elastic potential energy is associated with objects that can be stretched. |
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36. | The force exerted by gravity is stronger if two objects are closer. |
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37. | A rubber band that is flying across the room is moving because it has kinetic energy. |
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