ENERGY REVISION

4. Speed = _________ divided by time.
5. If the force of gravity on Mars is 2.65 times the gravity on Earth, to calculate g for Mars, you need to ____ 9.8 by 2.65.
6. Kinetic energy increases if this increases.
7. A stretched object has this type of potential energy.
9. The ENERGY IN for a toaster.
10. Stored energy is called _____ energy.
14. There are 3 types of nutrients in food that give us energy: carbohydrate, protein and ____.
15. If the ENERGY IN is the SAME as the ENERGY OUT, this is called an energy _______.
17. The value of this for stretchy objects, such as a spring, shows how stiff the spring is (HINT: 2 words).
20. This is the most efficient type of power to generate electricity.
21. Energy is measured using this unit.
22. This type of assessment makes us think about safety in an experiment.
23. This is the least efficient type of power to generate electricity.
24. The sun gives out this type of energy.
25. A radio gives out this type of energy.
26. This type of variable is the one we MEASURE in an experiment.
28. The K.E. for a roller coaster is greatest when it is at the _____ of a hump.

1. The ENERGY OUT for an oven.
2. Food has this type of potential energy.
3. The energy a moving object has.
8. An object lifted above the ground has this type of potential energy.
11. If the ENERGY IN is DIFFERENT to the ENERGY OUT, this is called an energy __________.
12. When a ball is thrown straight upwards, its G.P.E. is largest at the ___ of its flight.
13. G.P.E. increases if this increases.
16. This type of variable is the one that goes on the horizontal axis of a graph.
18. Energy cannot be created or destroyed only _____ into different forms.
19. The energy content of food is usually given in kJ per 100 _____.
27. Electricity is generated when a turbine ____ a coil inside a magnet.