Based on the Number of Impact Craters Observed Per Square

question 18

Multiple Choice

Based on the number of impact craters observed per square meter on their surface, place these terrestrial planets in order of youngest to oldest surface:

• A) Earth, Venus, Mercury
• B) Venus, Earth, Mercury
• C) Mercury, Venus, Earth
• D) Earth, Mercury, Venus
• E) Venus, Mercury, Earth

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Definitions:

Alluvial Fan

A fan or cone-shaped deposit of sediment built up by streams, typically found where a fast-flowing river flattens, slows, and spreads typically at the mouth of a canyon.

Desert Wash

A sandy or gravel-rich channel in a desert or other arid region.

Alluvial Fan

A fan-shaped deposit formed where a fast-flowing stream flattens, slows, and spreads out sediment at the base of mountains.

Desert Varnish

A thin, dark coating found on the surfaces of rocks in arid environments, composed of clay minerals mixed with iron and manganese oxides.