第4/709期初一课件

作者：梅园

Warm up

Can you see rust (锈) on Earth?

Is there any rust on the moon or Mars?

 

Pre-reading

Predict（预测）

Look at the title, the picture and the words next to the picture.

What is the strange find on the moon?

Why is the find strange?

It is unusual to find rust on the moon.

不同寻常的

 

Fast reading

What is the strange finding?

When and where can rust form?

What is needed to form rust?

A. Rocks and water.

B. Rocks and oxygen.

C. Iron and oxygen.

D. Iron, water and oxygen.

 

Careful reading

What do we know about the environment on the moon?

True or False:

 

1. Rocks on the moon have iron. 

 

2. It rains a lot on the moon.

 

3. There is water on the moon.

 

4. There is oxygen on the moon. 

TFFF

Why is there rust?

How does Earth make the moon rust?

What does the underlined word “it” mean?

A. Frozen water.       B. Solar wind.

C. Rust.                 D. Oxygen.

B

 

How did Mars get rusty?

Which statement about Mars is false?

A. Mars is rusty.    

B. Rust makes Mars look red.

C. Mars is rich in iron.                

D. Mars is rusty because of Earth.

 

Post reading

Reading Comprehension. Choose the correct answer.

1. What does the story mainly explain?

A. What solar wind brings to the moon.

B. What the moon is made of.

C. Why there is rust on the moon.

D. Why the moon has frozen water. 

C

 

2. What can we learn from the passage?

A. The moon is called the Red Planet.

B. Scientists have found rust on both sides of the moon.

C. We can't see rust (锈) on things that are made of iron (铁).

D. Scientists will do more studies in the future to see if their thoughts are true.

D

 

Words in use

Completion. Complete the sentences using the words in the box.

rich   travel   meet    though    form     face

1. When water and oxygen (氧气) ________ iron, rust will ________ on the iron.

2. The moon has rocks (石头) that are ________ in iron.

3. But the moon is dry, ________ it does have some frozen (冰冻的) water.

4. Scientists have only found rust on the side of the moon that ________ Earth.

5. They think that oxygen from Earth might ________ to the moon with the help of solar wind (太阳风).

1. meet; from   2. rich  3. though   4. faces  5. travel

 

Homework:

Do you know about other interesting scientific findings?

Would you like to share one with us?