What is a magnetosphere?
A) a region of space around a planet in which the planet's magnetic field can trap charged particles
B) the uppermost layer of any planetary atmosphere
C) the region in a planet's atmosphere in which auroras occur
D) the layer of a planet in which its magnetic field is generated
Correct Answer:
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Q21: How fast do tectonic plates move on
Q22: Why is Mars red?
A)Its surface is made
Q23: Which two factors are most important to
Q24: Which of the following best describes the
Q24: Which of the following describes tectonics?
A)the excavation
Q25: If the Earth were to warm up
Q27: Many scientists suspect that Venus has a
Q29: Which of the following is the underlying
Q30: Recent evidence suggests that Mars once had
Q31: All of the statements below are true.
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