外研版必修1 Module 5 A Lesson in a Lab Introduction PPT课件（21张ppt）
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| 名称 | 外研版必修1 Module 5 A Lesson in a Lab Introduction PPT课件（21张ppt） |  | |
| 格式 | zip | ||
| 文件大小 | 2.1MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2022-01-27 14:25:05 | ||
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(共21张PPT)
doing an experiment
tongs
crucible
dissolve
solid / liquid / gas
balance
Bunsen burner
（煤气喷灯）
test tube
1. (a) Water exists as a solid, a liquid and a gas.
(b) Water exists as a solid and a liquid only.
2. (a) When you heat a metal, it expands.
(b) When you heat a metal, it contracts.
Guess, listen and check the answer.
3. (a) Steel is a mixture of iron and other substances.
(b) Steel is a mixture of iron and oxygen.
4. (a) Two-thirds of the earth’s surface is water.
(b) 50% of the earth’s surface is water.
5. (a) The distance of the sun from the earth is 25,5000 kilometers.
(b) The distance of the sun from the earth is 150,500,500 kilometers.
6. (a) The earth is 4.6 million years old.
(b) The earth is 4.6 billion years old.
7. (a) The earth is twice as large as the moon.
(b) The earth is forty-nine times
larger than the moon.
Put the words in pairs or groups.
1
2
3
4
air – gas - oxygen
contract - expand
earth – sun - moon
gas – liquid - solid
air contract earth gas
liquid oxygen moon solid
sun expand
Answer these questions.
Which of the above are natural
Electricity, iron, some metals and air are natural.
2. Which are man-made
Steel, some metals and glass are man-made.
electricity iron metal steel air glass
3. Which can be both
Electricity and some metals
(alloys合金 for example) can be man-made and occur naturally.
1. When you heat a metal, it expands.
expand vi. 膨胀，扩张
e.g. ______________________________ in
the sunshine.
许多花的花瓣在阳光中绽放。
The petals of many flowers expand
反义词
contract vi. 收缩 n. 合同
e.g. The heat contracted the woolen
sweater. _________________
I’m ______________ to teach here for
one year.
我按照聘约要在这里教一年书。
高温使羊毛衫收缩。
under contract
2. Steel is a mixture of iron and other substances.
mixture n. 混合物
e.g. The _______________ made me
feel bad.
我喝了混合饮料后很难受。
mix v. 混合 mix A with B
mixture of drinks
substance n. 物质
e.g. Beware of what you do with
__________________. 你处理危险品时，可要当
心。
dangerous substance
1. Preview VOCABULARY AND SPEAKING about numbers and fractions on page 42.
2. Preview GRAMMAR1,GRAMMAR2 about the usage of degrees of comparison on page 43,47.
Do exercises 5 and 6 on page 92.
doing an experiment
tongs
crucible
dissolve
solid / liquid / gas
balance
Bunsen burner
（煤气喷灯）
test tube
1. (a) Water exists as a solid, a liquid and a gas.
(b) Water exists as a solid and a liquid only.
2. (a) When you heat a metal, it expands.
(b) When you heat a metal, it contracts.
Guess, listen and check the answer.
3. (a) Steel is a mixture of iron and other substances.
(b) Steel is a mixture of iron and oxygen.
4. (a) Two-thirds of the earth’s surface is water.
(b) 50% of the earth’s surface is water.
5. (a) The distance of the sun from the earth is 25,5000 kilometers.
(b) The distance of the sun from the earth is 150,500,500 kilometers.
6. (a) The earth is 4.6 million years old.
(b) The earth is 4.6 billion years old.
7. (a) The earth is twice as large as the moon.
(b) The earth is forty-nine times
larger than the moon.
Put the words in pairs or groups.
1
2
3
4
air – gas - oxygen
contract - expand
earth – sun - moon
gas – liquid - solid
air contract earth gas
liquid oxygen moon solid
sun expand
Answer these questions.
Which of the above are natural
Electricity, iron, some metals and air are natural.
2. Which are man-made
Steel, some metals and glass are man-made.
electricity iron metal steel air glass
3. Which can be both
Electricity and some metals
(alloys合金 for example) can be man-made and occur naturally.
1. When you heat a metal, it expands.
expand vi. 膨胀，扩张
e.g. ______________________________ in
the sunshine.
许多花的花瓣在阳光中绽放。
The petals of many flowers expand
反义词
contract vi. 收缩 n. 合同
e.g. The heat contracted the woolen
sweater. _________________
I’m ______________ to teach here for
one year.
我按照聘约要在这里教一年书。
高温使羊毛衫收缩。
under contract
2. Steel is a mixture of iron and other substances.
mixture n. 混合物
e.g. The _______________ made me
feel bad.
我喝了混合饮料后很难受。
mix v. 混合 mix A with B
mixture of drinks
substance n. 物质
e.g. Beware of what you do with
__________________. 你处理危险品时，可要当
心。
dangerous substance
1. Preview VOCABULARY AND SPEAKING about numbers and fractions on page 42.
2. Preview GRAMMAR1,GRAMMAR2 about the usage of degrees of comparison on page 43,47.
Do exercises 5 and 6 on page 92.