3
C 3.18 Read the text. Match headings A-E with sections
1-4 of the text. There is one heading that you do not need.
A What would happen?
B Where do the asteroids come from?
C What can we do about it?
D Science fiction or science fact?
E Why hasn't it happened already?
Read the text again. Are the sentences true or false?
1 Most asteroids come from outside the solar system.
2 Asteroids can be as big as mountains.
3 A large asteroid wouldn't cause much damage if it landed
in the ocean.
4 If an asteroid landed in a very remote area, it could still
be a disaster.
5 All of the dinosaurs disappeared because a huge asteroid
landed in Siberia.
6 It is possible for an asteroid to change the weather.
7 Scientists don't know exactly how to make an asteroid
change direction.​

Section 1: "What would happen?" - Heading A
Section 2: "Where do the asteroids come from?" - Heading B
Section 3: "What can we do about it?" - Heading C
Section 4: "Why hasn't it happened already?" - Heading E

Now let's read the text again to determine if the sentences are true or false:

1. Most asteroids come from outside the solar system.
This sentence is false. Most asteroids actually come from within our solar system, specifically from the asteroid belt located between Mars and Jupiter.

2. Asteroids can be as big as mountains.
This sentence is true. Some asteroids can indeed be as big as mountains, while others can be much smaller.

3. A large asteroid wouldn't cause much damage if it landed in the ocean.
This sentence is false. Even if an asteroid landed in the ocean, it could still cause a significant amount of damage. The impact could create huge waves known as tsunamis, leading to destruction along coastal areas.

4. If an asteroid landed in a very remote area, it could still be a disaster.
This sentence is true. Even if an asteroid landed in a remote area, it could still potentially cause a disaster. The impact could trigger widespread fires, create a massive dust cloud, and lead to long-term climate changes.

5. All of the dinosaurs disappeared because a huge asteroid landed in Siberia.
This sentence is false. While it is believed that a massive asteroid impact played a significant role in the extinction of dinosaurs, the impact occurred in what is now Mexico's Yucatan Peninsula, not Siberia.

6. It is possible for an asteroid to change the weather.
This sentence is true. When a large asteroid impacts the Earth's surface, it can release a considerable amount of dust and other particles into the atmosphere. This can lead to changes in the weather patterns around the world.

7. Scientists don't know exactly how to make an asteroid change direction.
This sentence is true. While scientists have studied various methods to deflect or change the course of an asteroid, they have not yet developed a foolproof method to achieve this. It remains an active area of research and exploration.

I hope this detailed explanation helps! Feel free to ask any further questions.