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ELEMENT II Space Debris
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ELEMENT II Space Debrisの定期テスト対策
Element II Lesson 6 Space Debris
Fill the blanks.
On a clear night, you can look at the stars ( ) the sky. ( ) ( ) you cannot see it, you are also looking at the largest junkyard in the solar system. ( 1 ) higher than the highest clouds but much closer than the moon, the junkyard stretches ( ) 20,000 miles overhead. There are tens ( ) millions of pieces of junk there. Some are rocks and dust from ( 2 ) comets, but most are and called “orbital debris.”
Astronauts have lost a camera, tools, and a glove in space. Most of the junk, however, comes ( ) large satellites and rockets that fell apart ( ) they stopped ( 3 ). Together, all the space junk would weigh about 11 million pounds ( ) the Earth, or more than 3,000 cars. The largest piece is a part ( ) rocket about the size of a family car. The smallest piece is smaller than your fingernail. Most pieces fly ( ) space ( ) more than 20 times the speed that sound travels on the Earth. A small stone in orbit ( ) the Earth can have ( ) much energy ( ) a bowling ball ( 4 ) 500 miles per hour, or a car going 30 miles per hour.
The junkyard is a serious problem ( ) the future of space travel. You’ve got thousands of satellites ( ) orbit all the time. ( ) tracking debris, you cannot avoid collisions. In 1983, a small crack appeared ( ) one window of the space shuttle Challenger ( ) it was in space. That was caused ( ) a small, orbiting piece of paint. If the shuttle had been struck by a larger piece of junk, the astronauts might have been ( ) danger. When the space shuttle Endeavour returned ( ) the Earth, its body had small holes ( ) space garbage. Two satellites also had to change direction to avoid collisions ( ) big pieces of junk.
Conjugate the word place, pass, work, and go to fit the parenthesis 1 to 4.
Fill the blanks.
On a clear night, you can look at the stars ( ) the sky. ( ) ( ) you cannot see it, you are also looking at the largest junkyard in the solar system. ( 1 ) higher than the highest clouds but much closer than the moon, the junkyard stretches ( ) 20,000 miles overhead. There are tens ( ) millions of pieces of junk there. Some are rocks and dust from ( 2 ) comets, but most are and called “orbital debris.”
Astronauts have lost a camera, tools, and a glove in space. Most of the junk, however, comes ( ) large satellites and rockets that fell apart ( ) they stopped ( 3 ). Together, all the space junk would weigh about 11 million pounds ( ) the Earth, or more than 3,000 cars. The largest piece is a part ( ) rocket about the size of a family car. The smallest piece is smaller than your fingernail. Most pieces fly ( ) space ( ) more than 20 times the speed that sound travels on the Earth. A small stone in orbit ( ) the Earth can have ( ) much energy ( ) a bowling ball ( 4 ) 500 miles per hour, or a car going 30 miles per hour.
The junkyard is a serious problem ( ) the future of space travel. You’ve got thousands of satellites ( ) orbit all the time. ( ) tracking debris, you cannot avoid collisions. In 1983, a small crack appeared ( ) one window of the space shuttle Challenger ( ) it was in space. That was caused ( ) a small, orbiting piece of paint. If the shuttle had been struck by a larger piece of junk, the astronauts might have been ( ) danger. When the space shuttle Endeavour returned ( ) the Earth, its body had small holes ( ) space garbage. Two satellites also had to change direction to avoid collisions ( ) big pieces of junk.
Conjugate the word place, pass, work, and go to fit the parenthesis 1 to 4.
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