2019-2020学年人教版高一英语必修3教案(内蒙古专用):Unit 4 Astronomy the science of the stars
2019-2020学年人教版高一英语必修3教案(内蒙古专用):Unit 4 Astronomy the science of the stars第3页

Suggested answers to the questions above:

* Most unexpected thing: the "black hole" threw out material as well as swallowing objects.

* Knowing when we reached it : You only know you are close to a black hole by seeing things going around what appears to be an empty space. The black hole cannot be seen.

* Most frightening experience: when the gravity of the "black hole" was pulling us slowly into its "mouth", and then the spaceship moved around the hole; I was terrified because I thought we would be swallowed by the "hole".

Practice the interview in front of the class in pairs.

V. Reading

This reading uses information from the listening text above. It is a science fiction story which imagines what it might be like if an astronaut visited the Moon.

Read the passage carefully and then describe the three ways in which gravity changed for Li Yanping and how his weight changed.

Suggested sentences:

1. The pull of gravity became very strong as he left the earth's atmosphere. His weight is normal.

2. It disappeared when he was in space. He is weightless.

3. It was very light when he was on the moon. He weighs less than on the earth.

VI. Reading Task

Remind the students of the knowledge of "black holes".

Read the passage to discover the new ideas about "black holes" .

Old ideas about "black holes" Was this what we found? New ideas about "black holes" Black holes cannot be seen

Yes You can only "see" it by watching the movements of the objects caught by its gravity.