5. All types of energy fall into two main categories: ___________ energy and ___________ energy.
6. Moving objects have ___________ energy. 7. Heat energy can cause particles to ___________. 8. Light energy is a form of ___________ ___________. 9. ___________ energy is produced by vibrating objects. 10. The movement of electrons is called ___________ energy. 11. Raised objects have ___________ potential energy. 12. Stretched or squashed objects have ____________ ___________ energy. 13. The energy stored in the bonds of molecules is called ____________ energy. 14. Nuclear energy is the energy contained in the ____________ of atoms. 15. The law of conservation of energy states that energy cannot be ____________ or destroyed, it can only ____________ from one form to another.
16. Identify the energy changes taking place in the following devices.
(a) Solar-powered car K U
(b) Electric guitar 17. If a mouse walks into this trap what energy transfer will take place?
Knowledge and Understanding 1. Explain how the sun’s energy is essential for each of these: (a) Plants (b) Animals (c) Humans (d) Petrol (e) Generation of electricity
2. Fill in the blanks in the following, naming the types of energy: (a) Electric mixer Energy input: __________
(b) Coal fire Energy input: __________
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Useful energy output: __________ Dissipated energy: __________
Useful energy output: __________ Dissipated energy: __________
