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

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Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seve n Teacher: kathy Ma 东东东东 东东

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

Page 1: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

Chapter 5Electricity

A Dangerous Servant

Oxford English Grade SevenTeacher: kathy Ma 东湖中学 马静

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

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?

Page 3: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

Natural elements

firewind

water light

Page 4: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

Natural element

electricityelectricity

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

How can we get electricity?

lightning

power station

Page 6: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

Different kinds of power station

Page 7: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

Riddles

a computer

a fan

a light

an air-conditioner

a fridge

a TV

Page 8: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

a computer

a fan

a light

an air-conditioner

a fridge

a TV

Electrical machines

Page 9: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

How do electrical machines get electricity?

plug socket

put the plug on the socket

Page 10: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

recorderssound energy

What kind of energy can they produce?

Recorders can produce sound energy.

Page 11: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

ironsheat energy

Recorders can produce sound energy.

Irons can produce heat energy.

What kind of energy can they produce?

Page 12: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

lights

What kind of energy can they produce?

Recorders can produce sound energy.

Irons can produce heat energy.

light energyLights can produce light energy.

Page 13: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

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.

Page 14: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

A: What kind of energy can … produce?B: … can produce ____ energy.

fan

printer air-conditioner MP3 kettle

computer

heater

MP4fridge

MD

video player

washing machine recordermobile phonewalkman

radio

light

CD player

vacuum cleaner

video player

bulb

Page 15: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

ListeningListening

Listen carefully and Listen carefully and choose the right choose the right

answer.answer.

Page 16: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.
Page 17: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

We mustn’t

touch the plug with the wet handWe mustn’t touch the plug with the wet hand.

Page 18: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

We mustn’t

tubheater

have a bath

put the heater near the tubWe mustn’t put the heater near the tub.

Page 19: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

We mustn’t

play with the electricityWe mustn’t play with the

electricity.

Page 20: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

Safety First

wet handsA: 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

Page 21: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

Save ElectricitySave Electricity

Page 22: Chapter 5 Electricity A Dangerous Servant Oxford English Grade Seven Teacher: kathy Ma 东湖中学 马静.

Homework:Make a Poster

How to Save Electricity