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| Question | Answer |
| Describe temperature. | Temperature is ...... |
| Describe heat. | Heat is... |
| Explain what specific latent heat is | Specific latent heat is ....... |
| Describe conduction, convection and radiation | Conduction is...... Convection is..... Radiation is ....... |
| Explain 4 ways a home can reduce heat energy loss | Heat energy loss in the home can be reduced by ....... |
| Explain why trapped air reduces heat energy loss | Trapped air reduces heat energy loss because........ |
| Describe the features of a transverse wave. | |
| Explain diffraction | Diffraction is... |
| Arrange the electromagnetic spectrum in order by wavelength | The waves of the EM spectrum are:- |
| Show how to calculate the speed of a wave. | The wave equation is:- |
| Explain the advantages and disadvantages of using light, radio and electrical signals for communication | Advantages of........ Disadvantages of ......... |
| Describe and explain TIR | TIR is ........ |
| Explain what a laser is | A laser is...... |
| Explain how a laser is used in a CD player | In a CD player ....... |
| Explain how microwaves and infrared transfer energy | microwaves and infrared transfer energy by ....... |
| Explain how to reduce signal loss with microwaves | to reduce signal loss with microwaves....... |
| Explain how the signal from an infrared remote controls a device | infrared remote controls a device by ......... |
| Describe advantages of using digital signals | advantages of using digital signals are................. |
| Describe advantages of using optical fibres | advantages of using optical fibres are ............ |
| Explain how the properties of digital signals allow us to use digital TV and radio | The properties of digital signals allow us to use digital TV and radio............. |
| Explain how long-distance communication uses satellites and the ionosphere | long-distance communication uses satellites and the ionosphere by .................. |
| explain the advantages of digital radio | the advantages of digital radio are ...................... |
| describe how seismic waves help to model the Earth’s structure | Seismic waves help to model the Earth’s structure by ................................... |
| Explain how the ozone layer protects the Earth from ultraviolet radiation | the ozone layer protects the Earth from ultraviolet radiation by ...................... |
| describe why the ozone layer is depleting and the effect this has | The ozone layer is depleting because ...... The effect of this is ............... |
| describe how the discovery of the ozone hole changed attitudes | the discovery of the ozone hole changed attitudes because .................... |
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