Energy

4. – A fossil fuel burned to make electricity, produces greenhouse gases.
7. Energy – Energy sources that will eventually run out (e.g., coal, oil, natural gas).
14. – A device that uses energy to do a task (e.g., fridge, TV).
15. – When a material takes in energy (e.g., dark clothes absorb heat).
16. – A material that slows or stops the transfer of heat, sound, or electricity.
18. – Stores chemical energy and converts it into electrical energy.
20. – Transfer of energy as waves (e.g., heat from the Sun travelling through space).
22. – A type of biofuel made from plants like sugarcane or corn.
23. Energy – Energy stored in stretched or compressed objects (e.g., a spring).
24. – Something that produces its own light (e.g., the Sun, a light bulb).
26. – A form of energy that can travel through space and be seen by the eye.
27. – A type of energy that travels as vibrations through air, water, or solids.
28. – Changing something into a different form (energy conversion is transforming energy).
29. Energy – Energy sources that can be replaced naturally (e.g., solar, wind, hydro).
30. – The ability to do work or cause change (e.g., move objects, heat things, produce light).
31. Fuel – Fuels made from ancient plants and animals (coal, oil, natural gas).

1. – The rate at which energy is used or produced.
2. – Tiny bits of matter (atoms or molecules).
3. Energy – Stored energy (e.g., a stretched rubber band).
5. – Transfer of heat through direct contact between materials.
6. Transformation – Changing energy from one form to another (e.g., solar → electrical).
8. Energy – Energy stored in the nucleus of atoms, released in nuclear reactions.
9. Energy – Energy of movement (e.g., a rolling ball).
10. Energy – Energy from the Sun, often captured by solar panels.
11. – A force that pulls objects toward each other (e.g., keeps us on Earth).
12. – Transfer of heat through movement of fluids (liquids or gases).
13. – Producing light by being heated (e.g., old-style filament light bulbs).
17. – Movement of energy through a material (e.g., light through glass).
19. – How much of the input energy is converted into useful output energy.
21. – The smallest unit of matter, made up of protons, neutrons, and electrons.
25. – When energy bounces off a surface (e.g., a mirror reflecting light).