Comets are composed of _____________________.
A) ice and rocky debris
B) gas,mostly hydrogen and helium
C) solid rock
D) plasma
E) unknown material
Correct Answer:
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Q1: Within the asteroid belt an asteroid collision
Q2: Extreme variations in the Earth's magnetic field
Q3: In 1994,the comet Shoemaker-Levy crashed with spectacular
Q5: The origin of the geomagnetic disturbances affecting
Q6: Which of the following statements regarding asteroids
Q7: Figure 14.11 plots the return period of
Q8: A comet's tail _.
A) lines up with
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Q10: Halley's comet contains carbon,hydrogen,oxygen and nitrogen in
Q11: Comets are found mostly in _.
A) the
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