Module 3 Unit 10 Water Festival Reading 课件（25张，含音频）

(共25张PPT)
3
The natural elements
10
Water Festival
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Reading:
Preparing for the Water Festival
Who am I?
I have no smell, no colour.
Nothing can cut me.
If you wash me more, I will be dirtier.
Yeah! I am water!
(True or false) Water is made up of hydrogen （氢）and oxygen （氧）.
A. T B. F
Water quiz
3) Water boils at 100 degrees Celsius.
A. T B. F
2) H2O is the chemical formula（化学式） of water.
A. T B. F
4) Ice sinks （下沉） in water.
A. T B. F
7) How long could you live without water?
A. About three months
B. About seven days
C. About one day
5) How much of your body is made up of water?
A. 70%
B. 25%
C. 6%
6) How much water should you drink daily for good health?
A. 1-2 glasses
B. 3-4 glasses
C. 6-8 glasses
Think and answer
8) ____ of the surface of the Earth is covered with water.
A. 75%
B. 50%
C. 10%
10)How much of the water on earth is available(可利用的）to drink?
A. 95%
B. 26%
C. 1%
9) _____ of the water on the Earth is in the ocean.
A. 30%
B. 58%
C. 97%
Think and answer
water
ice
steam
11) How many forms does water have?
turn into
[f??m]
Look and say
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If we put the water into the fridge,

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it fr_ _ zes and turns into ice.
[fri?z]
e e
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If we take out the ice from the fridge, it m _ lts and turns into water.


e
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2
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4
[melt]
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When the water ____, it turns into _______.

steam
boils
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4
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When steam _________, it turns into water.

cools down
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lid
[l?d]
Listen and answer
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1. What happens when water boils?
2. What happens when water freezes?
3. What happens when ice melts?
4. What happens when steam cools down?
The three forms of water
When..., it turns into...
I’ve got some questions for you to think about. What happens when water boils? What happens when water freezes? What happens when ice melts? What happens when steam cools down?
When water boils, it turns into steam.
When water freezes, it turns into ice.
When ice melts, it turns into water.
When steam
cools down, it turns into water.
A. freeze B. melt C. cool down D. boil
freeze
melt
boil
cool down
冷却
①
②
③
④
Look and match:
The three forms of water
A: What happens when… ?
B: When …, it turns into ….
boils
freezes
melts
cools down
Pair work
Group Competition:

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What happens when water boils?
When water boils ,it turns into steam.
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Water.
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Leave some ice cube in a bowl at room temperature. An hour later, what can you see in the bowl?
Drops of water.
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Put a dry lid on a glass of hot water.
Wait for 10 seconds (秒).Take the lid off. What can you see under the lid?
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Drops of water.
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Hold a plastic bag above a cup of hot water. After ten minutes, what can you see in the bag?
Drops of water.
The steam in the air turns into water on the cold glass.
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Put some ice cubes in a glass of water. Wait for 2 minutes. Look at the outside of the glass. What is on the glass? How does it happen?
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What happens when steam cools down?
When steam cools down, it turns into water.
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Water
Water has three f______. They are s______, ice and water. When water b_____, it turns into steam. When water f______, it turns into ice. When ice m_____, it turns into water. When steam c____ d____, it turns into water, too. If you put a dry lid on a glass of hot water, and wait for ten seconds, then t_____ the lid o__, you’ll find drops of water on the lid. That’s because the hot water in the glass t____ i___ steam and the steam turns into drops of water on the lid. If you put some ice cubes in a glass of water and wait for two minutes, then look at the o______ of the glass, you’ll find d____ of water on the glass, too. That’s because the steam in the air turns into water on the c___ glass.
All living things need water to live. People can live s_____ weeks without food, but only a few days w_____ water. We should drink 6-8 g______ of water each day!
Without water, the earth would look like the moon. How terrible it would be if there were n__ water!
orms
team
oils
reezes
elts
ools
own
ake
ff
urns
nto
utside
rops
old
everal
ithout
lasses
o
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Answer
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Water Quiz
1 What happens when water boils?
______________________
2 What happens when water freezes?
______________________
3 What happens when ice melts?
______________________
4 What happens when steam cools down?
______________________
It turns into steam.
It turns into ice.
It turns into water.
It turns into water.
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Put a dry lid on a glass of hot water. Wait for ten
seconds. Take the lid off. What is under the lid?
________________
How does it happen? _________________________________________
_________________________________________
Put some ice cubes in a glass of water. Wait for two minutes. Look at the outside of the glass. What is on the glass? _______________
How does it happen? _________________________________________
_________________________________________
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Drops of water.
The hot water in the glass turns into steam.
The steam turns into drops of water on the lid.
Drops of water.
The steam in the air turns into water on the cold glass.
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Consolidation
1. Oral work: Read the text after the recording at least 3 times.
2. Written work: Workbook 7B, page 70,71.
3. Find more information about water on the Internet. (optional work)