外研（新标准）版 八年级下 Module 3 Unit 2 We have not found life on any other planets yet. 课件 (3)(共15张PPT)

(共15张PPT)
1. How many planets are there in the universe
2. Is there any life on other planets
outer space
universe 宇宙
galaxy 星系
Watch the video and know about the universe.
solar system
太阳系
star 恒星
planet 行星
Read and choose the best title for the passage.
Anyone out there
Life on the earth
The sun and other stars
The stars at night
Listen and repeat it.
The Earth is a star.
The Sun is a star.
There is more than one galaxy in the universe.
Read the passage and check the true sentences.
√
√
4. The light from stars in other galaxies has travelled for a long time to reach us.
5. Scientists have received many messages from space.
6. Spaceship have visited most of the universe.
√
Read the passage and check the true sentences.
Read the passage again and answer the following questions.
1. Have we found any life on other planets
2. What is called solar system
No, we haven’t.
The Sun and its planets are called the solar system.
3. How many planets are there in solar system
4. Have we discovered other galaxies in the universe
5. Is there life on other planets
Eight.
Yes, we have.
We don’t know.
Read the passage again and answer the following questions.
Is there life on other planets There are seven other planets in our ___________, but
___________ of them has a(n) __________ like that of the earth. Spaceships from the earth have done surveys of the other planets, but they have not found any life there.
solar system
none
environment
communicate environment none
solar system universe
4. Complete the passage with the words
and expression in the box.
Why has no one from other planets tried to ___________ with us It is true that scientists have not discovered life on other planets in the __________ yet, but some scientists believe that they will find it some day.
communicate
universe
communicate environment none
solar system universe
Look at the cartoon picture and answer the questions.
Where has the spaceship landed (Mars)
What has the spaceship discovered (people on Mars)
3. Why have the people on Mars not sent us a message (do not know how to)
4. Why have the people on Mars not visited us on the earth (do not know how to)
6. Write a passage to describe the picture. Use your answers to the questions in Activity 5 to help you.
We have just received a message from our spaceship to Mars. Our spaceship has discovered aliens there. They have never sent us a message because they don’t know how to communicate with us. They have not visited the earth because they don’t know how to fly to our planet, and they prefer life on Mars. They seem very happy on their planet. They have used parts from the other spaceships from the earth to make TVs, radios, etc. We hope they don’t do the same with this one.