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10 minutes maximum! Can you do it in 5?
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1. Energy is measured in...
- A) joules
- B) watts
- C) pascals
- D) newtons
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2. This label on a bag of rice shows that 100 g of rice contains 1480 kJ of energy.
This is the same as
- A. 148000 J
- B. 1480000 J
- C. 14800000 J
- D. 148000000 J
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3. What is the name given to the energy stored in rice?
- A. gravitational potential energy
- B. kinetic energy
- C. elastic energy
- D. chemical energy
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4. What energy store is increasing when you climb up stairs?
- A. gravitational potential energy
- B. kinetic energy
- C. elastic energy
- D. chemical energy
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5. Thermal energy is transferred when we cook food. It always transfers from..
- A. one hot object to another hot object
- B. one hotter object to a colder object
- C. one colder object to a hotter object
- D. one cold object to another cold object
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Q 6-9. These questions are about transfers (shifts) in energy stored.
For each example choose the correct inital and final energy store. |
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Energy transfer |
Inital Stored Energy |
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Final Stored Energy |
| 6+7 |
An arrow fired from a bow. |
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to |
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| 8+9 |
A branch falling from a tall tree. |
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to |
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10. A vehicle is slowed down and stopped by friction brakes on the wheels. The kinetic energy is converted to..
- A. thermal energy.
- B. chemical energy.
- C. kinetic energy.
- D. elastic energy.
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