1. © OUP: To be used solely in purchaser’s school or college 7I Energy resources Using fuels Energy for the future Transferring energy Fossil fuels 7I Energy resources

2. © OUP: To be used solely in purchaser’s school or college 7I Energy resources Using fuels

3. © OUP: To be used solely in purchaser’s school or college Why were people so worried about running out of petrol? Petrol is a type of fuel. What other fuels do we depend on? 7I Using fuels – Petrol crisis 2000

4. © OUP: To be used solely in purchaser’s school or college If you were stuck on a desert island how would you do those activities? The energy released by burning fuels can be very useful. A fuel is any substance that burns in oxygen and releases energy. Name three ways you have used the energy from fuels today. 7I Using fuels – What is a fuel? fuel + oxygen energy

5. © OUP: To be used solely in purchaser’s school or college Decide which is the right fuel for each use. A. Bunsen burner B. barbecue C. aeroplane D. bonfire E. camping stove Use F. power station 1. charcoal 2. camping gas 3. coal 4. natural gas 5. wood Fuel 6. aviation fuel Different fuels produce energy for different uses. 7I Using fuels – Right type of fuel A. Bunsen burner B. barbecue C. aeroplane D. bonfire E. camping stove Use F. power station

6. © OUP: To be used solely in purchaser’s school or college 7I Energy resources Fossil fuels

7. © OUP: To be used solely in purchaser’s school or college 7I Fossil fuels – What is a fossil fuel? Fossil fuels, like coal, oil and natural gas, are energy resources that store chemical energy. Fossil fuels formed millions of years ago from the remains of dead plants and animals. Where does the chemical energy stored in oil and natural gas come from? The chemical energy stored in coal comes from trees and plants that lived millions of years ago.

8. © OUP: To be used solely in purchaser’s school or college 7I Fossil fuels – How are fossil fuels formed?

9. © OUP: To be used solely in purchaser’s school or college Is electricity a type of fuel? Electricity is a type of energy, NOT a type of fuel. In a power station fossil fuels can be burned to generate electricity. 7I Fossil fuels – Generating electricity What type of energy is electricity?

10. © OUP: To be used solely in purchaser’s school or college Put the following types of energy in the correct order to show how electricity is generated in a power station. heat energy electrical energy stored chemical energy movement energy 7I Fossil fuels – Generating electricity Electricity is electrical energy. stored chemical energy heat energy movement energy electrical energy

11. © OUP: To be used solely in purchaser’s school or college Do you know your fossil fuels or are you a fossil fool? 1. Burning fossil fuels can be useful because it releases a lot of … a) energy. b) films. c) music. 2. Fossil fuels are made from… a) dinosaur dung. b) old bones. c) decayed plants and creatures. 7I Fossil fuels – Are you a fossil fool?

12. © OUP: To be used solely in purchaser’s school or college 3. Oil was first discovered and used more than… a) 50 years ago. b) 500 years ago. c) 5000 years ago. 4. The earliest known use of coal was in… a) China. b) Canada. c) Australia. 7I Fossil fuels – Are you a fossil fool?

13. © OUP: To be used solely in purchaser’s school or college 6. Burning fossil fuels affects the environment by creating … a) pollution. b) oxygen. c) sunflowers. 5. The percentage of the world’s energy produced by burning fossil fuels is… a) 5. b) 80. c) 100. 7I Fossil fuels – Are you a fossil fool?

14. © OUP: To be used solely in purchaser’s school or college 7. Fossil fuels are non-renewable energy resources because they cannot be… a) repaired. b) replayed. c) replaced. 8. Some scientists think a bad side-effect of burning fossil fuels is… a) cold weather. b) global warming. c) more homework. 7I Fossil fuels – Are you a fossil fool?

15. © OUP: To be used solely in purchaser’s school or college 7I Energy resources Energy for the future

16. © OUP: To be used solely in purchaser’s school or college Renewable energy resources will not run out and can be replaced. But all energy resources have an environmental impact. 7I Energy for the future – Renewable energy resources

17. © OUP: To be used solely in purchaser’s school or college Decide if these statements about conserving energy at home are true or false. Did you know that the energy needed to run a home for a year creates more of the greenhouse gas carbon dioxide than an average car?! 7I Energy for the future – Conserving energy 1. The amount of heat lost annually through roofs and walls is enough to heat 1 million homes for a year! FALSE! Roofs and walls lose enough heat to warm 3 million homes a year! How could this energy be saved? 2. Each year UK households use £1.2 billion worth of electricity a year on cooling and freezing food. 3. An energy efficient washing machine needs half the energy of an old, inefficient model and cuts water consumption considerably. TRUE! Fridges use a lot of energy so don’t treat them like any other cupboard. If you open a fridge door for one minute, it takes three minutes for it to cool down which uses up energy. 4. Each energy efficient light bulb uses a quarter of the energy used by a regular bulb and saves about £10 per year on electricity. 5. If everyone in the UK installed just one energy saving light bulb the amount of carbon dioxide saved would fill the Royal Albert Hall in London 1000 times. FALSE! The amount of carbon dioxide saved would fill the Royal Albert Hall 3000 times!! If everyone does a little bit to save energy, together they can help a lot! TRUE! Energy efficient bulb might cost more than regular bulbs but overall they save energy and money! How many energy efficient bulbs do you have at home? FALSE! An energy efficient washing machine uses one third of the energy of an old, inefficient model.

18. © OUP: To be used solely in purchaser’s school or college 7I Energy resources Transferring energy

19. © OUP: To be used solely in purchaser’s school or college Where does the energy in food come from? Where do you get your energy from? You get your energy by “burning up” the food that you eat - but without the flames! 7I Transferring energy – Energy in food Food is the fuel that gives us energy and keep us alive.

20. © OUP: To be used solely in purchaser’s school or college One joule is a small amount of energy, so you need a lot of joules of energy everyday! The joule is named after the English physicist James Prescott Joule, who carried out lots of work on energy. Energy is measured in joules (J). One joule is the amount of energy needed to lift an apple a distance of one metre. 7I Transferring energy – Energetic scientists

21. © OUP: To be used solely in purchaser’s school or college The Irish physicist John Tyndall was another “energetic scientist”. Tyndall wanted to climb the Matterhorn, a mountain in Switzerland. He worked out that all the energy needed for this task was contained in a ham sandwich. 7I Transferring energy – Energetic scientists A ham sandwich, and a bottle of tea, was the only food he took with him to hike up the mountain! But just how big was that ham sandwich?

22. © OUP: To be used solely in purchaser’s school or college Match the “energy user” to the energy transformation. “Energy users” transform energy from one type to another. 7I Transferring energy – Energy transformations Energy user 1. plant (+ Sun) 2. mobile phone 3. light bulb 4. toaster 5. solar cell 6. person running F. light energy from the Sun Energy transformation A. electrical energy  heat energy B. stored chemical energy  movement energy C. light energy from the Sun  electrical energy D. stored chemical energy  sound energy E. electrical energy  light energy  chemical energy