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A
Mark each statement as either true (T) or false (F) according to theBog'liq Reading1A
Mark each statement as either true (T) or false (F) according to the
reading.
1. ____ Most asteroids are located between Mars and Jupiter.
2. ____ NEAs have probably caused the extinction of animals in the past.
3. ____ In 1989, a NEA hit Earth.
4. ____ The effect of an asteroid strike can be similar to that of a nuclear bomb.
B
Choose the best answer.
1. Why do scientists think that big asteroids hit the Earth in the past?
a. There is evidence in space.
b. We can see big marks on Earth.
c. We have experienced it recently.
d. We have had an ice age.
2. How could a NEA have caused the extinction of the dinosaurs?
a. By hitting the dinosaurs
b. By making poisonous vapor
c. By causing the climate to become very cold
d. By causing volcanoes
3. Why are NEAs more dangerous to us?
a. We can’t easily find them to destroy.
b. They are too big to destroy.
c. They are smaller and faster.
d. We know where they are.
C
For the next two questions, look for the answers in the passage and
write them on the lines provided.
1. In terms of hitting the Earth, where are the most dangerous asteroids located?
______________________________________________________
______________________________________________________
2. What is the probable reason why the Tunguska asteroid did less damage
than the dinosaur-killing asteroid?
______________________________________________________
______________________________________________________
S
ummary
99
V
ocabulary Extension
Here are six words that are related to the topic but are not in the reading.
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