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Across 5. Energy that once used cannot be used again. it is finite. 7. When energy supply exceeds demand. Found in energy rich countries like Canada and Saudi Arabia 8. Where there is not enough energy to satisfy demand. This can lead to 'blackouts.' 10. The name given to the measurement of greenhouse gases released into the atmosphere by an individuals activities. 13. Oil, coal and natural gas are all types of this. 15. Where places and people have access to an uninterrupted supply of energy. 17. Electricity that is created by moving air. 18. Currently this is around 7.5 billion and growing leading to a rise in global energy consumption.

Down 1. An energy that is created by splitting uranium atoms and harnessing the enormous heat that is given off. 2. The type of electricity created as the kinetic energy of flowing water from a reservoir passes through a turbine in a dam. 3. Cars that have both petrol and electric motors in order to reduce carbon emissions. 4. Energy created by using the heat within the Earth in tectonically active areas. 6. These are fitted to the rooftops of many homes in the UK in order to create electricity. 9. An energy resource collected by many people in Africa. One of the causes of desertification. 11. This can be put into wall cavities and lofts in order for homes to conserve energy. 12. Forms of energy that will not run out. 14. The name given to the hydraulic fracturing of shale rock deep underground in order to release natural gas. 16. Electricity generated by harnessing the energy in changing sea levels due to the magnetic pull of the Moon.