Module 1 Unit 1 Saving the Earth Period 1 课件（20张PPT）

课件20张PPT。9B U1 Period 1Enjoy a songFree talkWhat did you see while listening?sunrise
rain
fields
animals
sea
…environmentModule 1
Environment and lifeA small quizThink and learnatmosphereanThink and learnthe atmospherecontrolsthe heatcausesglobal warming全球变暖Think and learndamage the atmospheretoo much heatthe ice meltsthe level of sea risesmay cause floodsThink and learnsituationseriousin dangerdo something toRead and learna consumera person who buys
and uses thingsa green consumera consumer only buys and uses things that don’t pollute the earthRead and learnIs Lo a green consumer?Read and learnwriterguidea kind of joba kind of bookRead and learnThe green consumerPara 1Para 2Para 3Para 4Para 5Read and learnPeople don’t deal with the rubbish in a right way. People use chemicals called CFCs too much.Trees are fewer and fewer.We should be green consumers to save the earth.The main gas—CO2 makes our earth warmer and warmer. Read and learnThe greenhouse effectsunlightwarmthliving thingsis changingare pollutingis keepingcause the level of sea to riseflood cities and even whole countriesenvironment control cause heat flood guide in danger situation serious greenhouse effect surface damage chemical form produce fuel level keep…from Word bankn. environment heat flood guide situation greenhouse effect surface chemical form fuel levelv. control cause damage produce a. serious chemical phases.in danger keep…fromMore practiceChoose the right word to complete the sentencesituation surface greenhouse guide environment chemicalCO2 is a kind of ___________ gas and too much
CO2 makes the earth warmer.
2. To protect our _____________, we should be green consumers.
3. Would you make a dialogue according to the given ____________?
4. The ___________ of the moon is lifeless.
5. O2 is a kind of important ________in chemistry.
6. Reading the travel ____________before travelling is helpful.greenhouseenvironmentsituationsurfacechemicalguideMore practiceComplete the sentence with the right form of the given wordMore and more people realize our earth is in _____________. (dangerous)
The situation is so ____________that we must do something. (seriously)
3. Many factories ___________ toy bears for kids.
(product)
4. The brave man kept the sad lady from
___________into the river. (jump)
5. Our teacher have told us what a ____________
change is. (chemistry)dangerseriousproducejumpingchemicalIndividual workwrong B. floods C. keeps D. changing E. chemicals
F. do something to G. level H. living I. aliveHei, what are you talking about?
The greenhouse effect.
Yes, we’ve just learnt it.
A. What causes the greenhouse effect?
D. The ____1_____ atmosphere.
B. Why is it changing?
C. That’s because people are polluting it with _____2_____.
Is the atmosphere important?
D. Sure. All ___3_____things need it.
C. Right. It lets sunlight in and ____4_____ warmth. B. But there is something _____5____with it.
What may happen if the situation goes on?
D. It may cause the ____6____of the sea to rise.
C. It may also cause more _____7_____.
B. In my opinion, we must ______8_____ to save the earth.
D. I agree with you. DEHCAGBFConclusionThe fact
The trouble
The possible result The greenhouse effectThe atmosphere is very important. The atmosphere is changing.The level of sea may rise.AssignmentOral work:
1. Read the first part on page 3 after the tape fluently.
2. Recite the key words and phrases we learned today. Written work:
Find some ways to reduce the greenhouse effect and write them down.