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According to a 2016 estimate quoted in the chapter, what is the main concern about space debris around the earth?
AIt blocks sunlight from reaching the earth's surface
BIt can collide with satellites and spacecraft and damage them
CIt pulls satellites into higher orbits over time
DIt changes the earth's rotation period
Answer & Solution
Correct answer: B. It can collide with satellites and spacecraft and damage them
1. Space debris includes non-functional satellites, detached launcher parts and fragments from collisions.
2. A 2016 estimate counted about 2 crore pieces longer than 1 cm orbiting the earth.
3. The chapter warns this debris can collide with satellites or spacecraft and damage them.
4. As debris keeps increasing, launching new spacecraft will become difficult, so it must be managed. Hence option A is correct.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 10 "Space Missions", p.152_
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