Question 1
1 out of 1 points
Where do comets come from?
Answer
Selected Answer: the Oort cloud and the kuiper belt
Correct Answer: the Oort cloud and the kuiper belt
Question 2
1 out of 1 points
Why didn’t a planet form in the asteroid belt?
Answer
Selected
Answer:
Jupiter’s gravity interfered with the orbits of the
planetesimals
Correct Answer: Jupiter’s gravity interfered with the orbits of the
planetesimals
Question 3
1 out of 1 points
When earth’s orbit crosses the orbit of a comet a ____________ occurs, and
meteors seem to come from the _______.
Answer
Selected Answer: meteor shower, radiant
Correct Answer: meteor shower, radiant
Question 4
1 out of 1 points
List the two kinds of comet tails.
Answer
