Why is the daily temperature variation on Mars so much larger than we experience on Earth?
A)Mars spins slowly,so its nights are very long
B)Mars is much darker than the Earth,so it absorbs more sunlight
C)Mars's atmosphere is too thin to insulate the surface
D)Mars has smaller internal heat sources than the Earth

Question

Quizplus · Accepted Answer

Mars's atmosphere is only about 1% as dense as Earth's atmosphere, which means it cannot retain heat very well. As a result, when the sun sets on Mars, the surface cools down rapidly, resulting in a large temperature variation between day and night. On Earth, our thicker atmosphere helps to retain heat and moderates the temperature variation.

Why Is the Daily Temperature Variation on Mars So Much