Question 7 (2 points)

A new planetary system is discovered with three planets with the exact same escape velocity. Planet A is 0.5 AU from its star, Planet B is 1.5 AU from its star, and Planet C is 2.5 AU from its star. Which of these would be least likely to have an atmosphere?

Question 7 options:

	Planet A
	Planet B
	Planet C

Question 8 (2 points)

Which of the following gases will have the highest average velocity if they are all in a chamber at the same temperature?

Question 8 options:

	Hydrogen
	Methane
	Carbon Dioxide

Question 9 (2 points)

At what temperature will hydrogen have the highest average velocity of its particles?

Question 9 options:

	100K
	200K
	300K

Question 10 (2 points)

Which of the following gases will have the lowest average velocity if they are all in a chamber at the same temperature?

Question 10 options:

	Hydrogen
	Methane
	Carbon Dioxide

Question 11 (2 points)

A new planetary system is discovered with three planets with the exact same escape velocity. Planet A is 0.5 AU from its star, Planet B is 1.5 AU from its star, and Planet C is 2.5 AU from its star. Which of these would be most likely to have an atmosphere?

Question 11 options:

	Planet A
	Planet B
	Planet C