牛津译林版（2019）选择性必修 第三册Unit 2 Out of this world Project 课件(共18张PPT)

(共18张PPT)
Unit 2 Out of this world
Project
1. the Sun
2. Mercury / m kj ri/
3. Venus /'vi n s/
4. the Earth
5. Mars
6. Jupiter / d u p t (r)/
7. Saturn / s t n/
8. Uranus / 'j r n s/
9. Neptune / neptju n/
Mars is a rather harsh environment
no oxygen in its atmosphere
very cold
radiation
the atmospheric pressure
in a protected environment with source of oxygen
Sample
A: Can humans live on Mars
B: It’s hard to do it, because Mars is a rather harsh environment.
A: Would you please tell me more about it
B: First, Mars has essentially no oxygen in its atmosphere. The atmosphere of Mars could not support life.
B: That’s terrible.
M: Secondly, it is very cold on Mars.
A: So we would die of freezing on Mars.
B: You are right if unprotected. Thirdly, radiation.
A: We need protection against radiation to be healthy and not get cancer.
B: There’re many other problems. For example, the atmospheric pressure is not suitable for humans just like when you go deep in the ocean the pressure increases.
A: Oh, it’s hopeless!
B: However, humans could live in a protected environment with source of oxygen.
A: I hear there is currently a mission planned by a private company to send humans to permanently live on Mars!
B: Time will tell if they’re successful.
Sample
Understanding the profile How to live on Mars
What problems are mentioned in the profile And how can we solve them
Radiation
Dust storms
We should find permanent shelter that offers long-term protection, such as building a special structure near Mars’ freezing north pole. We could also take advantage of the solar energy or construct nuclear power stations to satisfy our energy needs.
Problems Solutions
… …
Water
Food
Water mining.
Create water with oxygen and hydrogen shipped from the Earth.
Grow food using chemicals like carbon, nitrogen, oxygen, hydrogen, etc.
What if we lived on the Moon
Wouldn’t it be cool to be able to live and work on the Moon Let’s say we do want to live and work on the Moon. But there are two basic needs that we would have to take care of: water and food.
What if we lived on the Moon
Water is a tricky problem. There’s now some evidence that water ice might be present at both the north and south lunar poles. If so, water mining might be possible.
If water isn’t available on the Moon, it must be imported from the Earth. One way to do that would be to ship liquid hydrogen from Earth to the Moon, and then react it with oxygen from the Moon’s soil to create water. As a side-benefit, the hydrogen can react with oxygen in a fuel cell to create electricity as it creates water.
What if we lived on the Moon
Food is also a problem. The first thought that anyone on the Earth would have is to grow the food on the Moon, using chemicals like carbon, nitrogen, oxygen, hydrogen, potassium, phosphorous, and so on. To grow a ton of wheat, you’ll have to import all the chemicals not readily available on the Moon. Once the first crop is in, and as long as the colony’s population is stable, then the chemicals can be reused in a natural cycle. The plant grows, a person eats it, and the person excretes it as solid waste, liquid waste and carbon dioxide in the breath. These waste products then nourish the next batch of plants.
Definitions
1. n. a fine powder that consists of very small pieces of sand, earth, etc.
2. v. to remove dirt from sb/sth/yourself with your hands or a brush
Vocabulary web
(1) dust

dusty adj.
dustbin n.
duster n.;
dust n.
Definitions
1. n. the fact of having a place to live or stay, considered as a basic human need
2. v. to protect sb/sth
3. v. to stay in a place that protects you from the weather or from danger
Vocabulary web
(2) shelter

sheltered adj.
shelter v.
Definitions
1. adj. happening all the time or repeatedly
2. adj. that does not change
Vocabulary web
(3) constant


constancy n.
constantly adv.
constant adj.
Definitions
adj. using, producing or resulting from nuclear energy
2. adj. connected with weapons that use nuclear energy
Vocabulary web
(4) nuclear
a nuclear power station
(1) The crisis struck the core of the global system, leaving no country ________ from its consequences.
sheltered
dust, constant, nuclear, shelter
(2) History is much more than the study of ________ old objects and events long past．
dusty
(3) She thought ________ about her family; she might never know what had become of them.
(4) There has been a move away from ________ energy.
constantly
nuclear
dust, constant, nuclear, shelter
Homework
Surf the Internet and find more interesting information about how to live beyond the Earth.
感谢您的耐心观看