S e c o n d e d I t I o n 1 Reading for the Real World 1

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?
______________________________________________________
______________________________________________________

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S 
ummary
99
V 
ocabulary Extension
Here are six words that are related to the topic but are not in the reading. 
Fill in each blank with the best word from the list. Use each word only 
once.
debris collision disaster aftermath precautions probability
1.
The __________ of an asteroid with Earth could cause a lot of damage.
2.
In fact, an asteroid strike would be a(n) __________.
3.
In the __________ of a large asteroid strike, dust and clouds would prevent 
sunlight from reaching Earth.
4.
The __________ of a large asteroid strike is very low---much less than 1 percent.
5.
The __________ from the plane crash was found all over the mountain.
6.
If we take __________, we should have no trouble.
Fill in the blanks in the table with the sentences below according to the 
category they belong to. Use each sentence only once.
1.
Even though the NEA that struck the Earth in 1908 vaporized before it hit the 
ground, the blast still caused a lot of damage in the area.
2.
Asteroids whose orbits are located near the Earth are called NEAs.