Year 9 Energy

2. Clue: The standard SI unit of measurement for power, equal to one joule per second.
4. Clue: The energy store an object gains when it is lifted up in a gravitational field (_______ potential energy).
8. Clue: A measure of how quickly heat energy moves through a material via conduction (Thermal __________).
10. Clue: A force that opposes motion between two surfaces, causing energy to be dissipated as heat.
11. Clue: A machine with blades that is spun by moving steam, water, or wind to drive a generator in a power station.
13. Clue: The energy store of an object that has been stretched, compressed, or squashed (_______ potential energy).
15. Clue: Renewable energy resource that uses heat energy from radioactive decay deep inside the Earth to heat water or generate electricity.
16. Clue: The energy store found in food, fuels, and batteries.
17. Clue: An energy resource that is being replenished as it is used, meaning it will never run out (e.g., solar, wind).
19. Clue: An energy resource that cannot be replenished and will eventually run out, such as fossil fuels or nuclear fuel.

1. Clue: The rate at which energy is transferred or the rate at which work is done.
3. Clue: The amount of energy required to raise the temperature of 1 kg of a substance by 1°C (Specific heat __________).
5. Clue: The standard SI unit of measurement for energy and work done.
6. Clue: Any fuel taken from living or recently living organisms, such as wood or methane from animal waste.
7. Clue: Energy that is wasted and spreads out into the surroundings, usually as thermal energy.
8. Clue: The law stating that energy can be transferred usefully, stored, or dissipated, but can never be created or destroyed (_______ of energy).
9. Clue: The energy store of a moving object, calculated using an object's mass and speed.
12. Clue: A material with a low thermal conductivity that minimizes the rate of unwanted energy transfer.
14. Clue: The energy store associated with an object's temperature; the hotter it is, the more energy is in this store.
18. Clue: The proportion of total input energy that is transferred into useful output energy (often calculated as percentage __________).