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Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

Published byCharla Theresa Wilkins Modified over 9 years ago

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Presentation on theme: "Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静."— Presentation transcript:

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2 Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静

3 Let’s watch a flash together! Questions: Q1:What does the flash tell us? Q2:Water is a natural element. What other natural element can you think of?

4 Natural elements firewind waterlight

5 Natural element electricity

6 How can we get electricity? lightning power station

7 Different kinds of power station

8 Riddles a computer a fan a light an air-conditioner a fridge a TV

9 a computer a fan a light an air-conditioner a fridge a TV Electrical machines

10 How do electrical machines get electricity? plug socket put the plug on the socket

11 recorders sound energy What kind of energy can they produce? Recorders can produce sound energy.

12 irons heat energy Recorders can produce sound energy. Irons can produce heat energy. What kind of energy can they produce?

13 lights What kind of energy can they produce? Recorders can produce sound energy. Irons can produce heat energy. light energy Lights can produce light energy.

14 fans Recorders can produce sound energy. Irons can produce heat energy. Lights can produce light energy. movement energy What kind of energy can they produce? Fans can produce movement energy.

15 A: What kind of energy can … produce? B: … can produce ____ energy. fan printer air-conditioner MP3kettle computer heater MP4 fridge MD video player washing machine recorder mobile phone walkman radio light CD player vacuum cleaner video player bulb

16 Listening Listen carefully and choose the right answer.

17

18 We mustn’t touch the plug with the wet hand We mustn’t touch the plug with the wet hand.

19 We mustn’t tub heater have a bath put the heater near the tub We mustn’t put the heater near the tub.

20 We mustn’t play with the electricity We mustn’t play with the electricity.

21 Safety First wet hands A: Can I … B: No. You mustn’t … water heater near the tub heater touch the plug play with electricity change the bulb open the window

22 Save Electricity

23 Homework: Make a Poster How to Save Electricity

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