5
QuizMultiple Choice

Waves — Test

Question 5 • Physics in the Universe

In 2010, scientists obtained an image of an asteroid that was dangerously close to Earth. Which technology did the scientists likely use to capture the image?

Answer
A
radio telescope, because it captures radio waves from space
B
MRI, because it uses magnets to produce a picture
C
submarine communication, because it uses LF radio waves
D
GPS, because it uses satellites that provide position and velocity data

Explanation

A radio telescope detects radio waves coming from objects in space, so it is the listed technology that could be used to observe an asteroid. MRI creates images of objects inside a scanner, while submarine communication and GPS have different purposes and do not capture images of asteroids. The correct choice is “radio telescope, because it captures radio waves from space.”

AI-written and checked against the verified answer.

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