The outflow channels on Mars indicate a flood period in the history of Mars. During thistime, based on the width and depth of the remaining riverbed, it is thought that the flow rate musthave been:
A)just a small trickle, barely more than a stream of water.
B)moderate, about the flow rate of the Ohio River.
C)fairly large, about the flow rate of the current Colorado River.
D)significantly large, about the flow rate of the Amazon River.
E)enormous, as much as 100 times the flow rate of the Amazon River.

Question

Quizplus · Accepted Answer

The outflow channels on Mars suggest that there were periods of catastrophic flooding, with flow rates enormously greater than Earth's largest river, the Amazon. This is indicated by the vast width and depth of the channels, which could only have been formed by flow rates much higher than anything observed on Earth today.

The Outflow Channels on Mars Indicate a Flood Period in the History