Craters on Mars Have Flatter Bottoms and Their Rims Appear

question 10

Multiple Choice

Craters on Mars have flatter bottoms and their rims appear to be more worn down than those on either Earth's Moon or Mercury. What has caused this wear?

• A) breakdown of the rocks by the extreme temperature variations between day and night
• B) erosion by the seasonal fall and subsequent melting of carbon dioxide snow
• C) erosion by wind and infilling by dust storms
• D) erosion by rainfall, now and in the past

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Definitions:

High-Pressure Cut-Off Switch

A safety feature in systems that automatically stops the system when the pressure exceeds a predefined limit to prevent damage.

Muffler

A component of a vehicle's exhaust system designed to reduce noise produced by the exhaust process.

Discharge Side

The part of a system where fluid or gas exits or is expelled, often referring to pumps, compressors, and other fluid handling equipment.

Refrigerant Leak Detector

A device or tool used to identify leaks in systems that use refrigerants, crucial for maintaining air conditioning and refrigeration systems.