Module3 Journey to space.Unit2 We have not found life on any other planets yet.课件(共20张PPT)

(共20张PPT)
Module 3 Journey to space
Unit 2
Before the journey, let’s review some knowledge about space.
Are you ready
Go!!!
水星
金星
火星
木星
土星
天王星
海王星
Do you know them
The earth is a planet and it ___________ the sun.
goes around
The sun and its planets are called ________________ .
the solar system
Our solar system is a small part of
________________________.
the Galaxy / the Milky Way
universe
There are many ________in the universe.
galaxies
Have scientists discovered life on Mars？
Have scientists discovered life on other planets
We haven’t found life on any other planets.
Unit 2
Avatar
UFO
Aliens
Crop Circle
Are we alone
[ v tɑ ]
Title
1. Anyone out there
2. Life on the Earth
3. The sun and other stars
4. The stars at night
Task 1:Read the passage and choose the best title for it.
Tips: key sentences in each
paragragh，especially para 1 and para 5
An article on whether there is life on other planets
An article on how life developed on the earth and what it is like
An article on ……
An article on ……
According to the main idea of each paragraph, please put the following pictures in the right order.
Fast reading
According to the main idea of each paragraph, please put the following pictures in the right order.
Fast reading
1
2
3
4
5
Life on earth and other planets
Planets, solar system
and the Galaxy
Other galaxies in the universe
Spaceships to Mars and outside the solar syatem
questions
Careful reading: Para1
1.How many years has there been life on the earth
……for hundreds of millions of years.
A. 百万年
B. 千万年
C. 亿万年
2. However, we have not found life on any
other planets yet.
(Read Para2 and answer)
Because none of them has an environment
like that of the earth.
So_________________________________
_______________________________.
scientists do not think (they will find life on the other planets)
That’s why
What does “that”refer to？
Why
The earth is a ______ .
Eight planets goes around the _____.
The sun and its eight planets are called
________________ .
Our galaxy is called__________________ .
There are billions of ______in the Galaxy.
stars
the solar system
the Galaxy or the Milky Way
planet
sun
Para.2 & first sentence in Para.3
数十亿颗恒星
Our sun is only one of the stars.
star
planets ( go around)
the solar system
the Milky Way
galaxy
Retell
planet
( go around)
universe

The stars look small.
They are far away.
Their light has to travel for many years to reach us.
How far
Careful reading: Para3
So how large is the universe
It is impossible to imagine.
Scientists have sent spaceships to ______
Mars
the moon
outside the
solar system


How great the scientists are!
Careful reading: Para4
What have scientists done to learn about the universe
No spaceship has travelled far enough to reach other
stars in our Galaxy.
enough adj. adv.

Questions
with so many stars in the universe
Are we alone
Is there life out there in space
Have there been visitors to the earth
from other planets
Why has no one communicated with us
alien
They（aliens） are afraid of us.
The communication tools are not good.……
…
The languages are different from ours.
Careful reading: Para5
Work hard and get the answers.
Anyone out there
Life on earth and other planets
Spaceships to Mars and outside the solar system
retell
Planets, solar system
and the Galaxy
Other galaxies in the universe
questions
Scientist think that…
However, have not found
The earth is…
Seven other planets…
But none of them…
Solar system …
Galaxy…
discovered…
They are far…and lights…reach us
impossible…
sent …to…to take…
They have also sent…
However …
Questions:
Look at the picture and answer questions.
P21 A5
We have just received a message from our spaceship to Mars.
This is our 20th spaceship to Mars./ Luckily our spaceship has discovered people on Mars there. After
a long talk, we have known more about them. 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.
We have done surveys of many planets
and we are very excited to get good news from Mars. We believe we will receive messages from other planets if we keep trying.
Introduction
Body
Conclusion