Why Are Almost All the Craters We See on the Moon

question 21

Multiple Choice

Why are almost all the craters we see on the Moon circular?

• A) because the rocks and icebergs that fell from space to make them were all spherical
• B) because the volcanoes that make them erupt in a symmetrical way, making circular openings for the lava to emerge
• C) because the active surface of the Moon converts the craters into circular basins, no matter what shape they start out being
• D) because the rocks and icebergs that hit the Moon are moving so fast, they explode on impact, making a circular hole
• E) this is an unsolved mystery; it's one of the most puzzling things about the Moon

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Definitions:

Seismic Waves

Waves of energy that travel through the Earth’s layers, resulting from earthquakes, volcanic eruptions, or other seismic events.

Earth

The third planet from the Sun, our home, characterized by its vast oceans, atmosphere, and life.

Seismic Rays

Waves of energy that travel through the Earth's layers as a result of earthquakes or artificial explosions.

Refracted

Refracted refers to the change in direction of a wave, such as light or sound, as it passes from one medium to another at an angle.