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SES4U Final Assessment Part 1: Impact Craters

An impact crater (impact basin or sometimes crater) is a circular depression on a surface, usually referring to a planet, moon, asteroid, or other celestial body, caused by a collision of a smaller body (meteorite) with the surface. In the center of craters on Earth a crater lake often accumulates, and a central island or peak (caused by rebounding crustal rock after the impact) is usually a prominent feature in the lake.

Ancient craters whose relief has disappeared leaving only a "ghost" of a crater are known as palimpsests. Although it might be assumed that a major impact on the Earth would leave behind absolutely unmistakable evidence, in fact the gradual processes that change the surface of the Earth tend to cover the effects of impacts. Fortunately, scientists have discovered some untouched craters around the universe.

Impact craters found on different planetary regions
The Moon
The surface of the moon is scarred with......


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Approximate Pages: 5 (250 words per double-spaced page)

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