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5-5 Space Walking

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Space Walking

  Astronauts began to leave the comfort and safety of their spacecraft and began floating in space in 1965.  This activity has been termed "space walking."  This activity is always risky because the astronauts have only a few thin layers of fabric and plastic between them and the lethal space environment.

  Surface space walking took place on the moon during the Apollo missions of the late 1960's and early 1970's.  The astronauts wore self-contained spacesuits and roamed across the lava plains and rugged highlands of the Moon.  On the last three missions that had a wheeled transport vehicle called a Moon buggy.

  In July 1990 Soviet Union cosmonauts made two long space walks on the space station Mir to check and repair their ferry craft and close a faulty reentry hatch.

  Since the space shuttle was introduced, many scheduled and a few unscheduled space walks have taken place.  Scheduled walks were made to repair satellites that have been captured from orbit.  Walks have also been scheduled to support experiments taking place in the cargo bay.  While working in the cargo bay, the astronauts are usually tethered to a safety line or "ride" on the orbiter's robot arm.  They wear a jet-propelled backpack know as the manned maneuvering unit (MMU). 

 

Answer the questions below

 

1. According to this passage space walking is done
 

only by United States astronauts.

only by Soviet Union cosmonauts.

by United States States astronauts and Soviet Union cosmonauts.

 

2. Space walking is very risky because of the space environment.

 

3. Space walking began in the year .

 

4. While astronauts work in the cargo bay they are attached to a safety

 

5. The United States Apollo missions occurred during 
 

the late 1960's and early 1970's.

the 1950's and early 1960's.

the 1970's and 1980's.

 

6. The wheeled transport vehicle used for transportation on the moon was called a   .

 
7. The name of the Soviet Union space station is .
 
8. During space walks astronauts and cosmonauts suits are made of
 
thin layers of plastic and heavy fabric.

heavy, bulky materials.

thin layers of plastic and fabric.

 
9. The jet-propelled backpack worn during space walks is called a
 
manned maneuvering unit.

jet-propelling unit.

satellite unit.

 
10. Space walks can be either or unscheduled.
 
11. According to this passage, when man walked on the moon he roamed across plains and rugged highlands.

 

 

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