Author Question: Why are the largest volcanoes on Earth so much smaller than the largest ones on Mars? What will ... (Read 92 times)

itsmyluck · **on:** Jul 14, 2018

Why are the largest volcanoes on Earth so much smaller than the largest ones on Mars?

What will be an ideal response?

Question 2

What evidence suggests that Mars had an active hydrologic cycle in the past?

What will be an ideal response?

wuly · **Reply #1 on:** Jul 14, 2018

Answer to Question 1

Plate tectonic processes on Earth keep things moving around, so a mantle plume creates a volcanic chain such as the Hawaiian Islands. Plate tectonics on Mars is absent, however, so successive eruptions accumulate in the same location, creating very large volcanic structures.

Answer to Question 2

Mars has all kinds of stream-like features carved into its surface, which most likely are the result of the work of running water.