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Exam 19: Meteorites, Asteroids, and Comets

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Question 31

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Compared to the inner asteroid belt, the outer asteroid belt is ____________ and ____________, as shown in the following graph.

A) dark, gray
B) red, dark
C) bright, red
D) gray, bright

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Question 32

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Meteors strike Earth's atmosphere every day.

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Question 33

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How might we explain the origin of the different types of meteorites among the asteroids

The shape of a comet's ____________ tail is formed by radiation pressure.

The Kuiper Belt is predicted to be the place where most of the short-period comets formed.

Choose the correct object to make the statement correct:A/An ____(meteor, meteoroid, meteor shower, meteorite, asteroid)______ impact could result in a climate change for the world.

The diagram below shows the relative size of Earth's Moon and the asteroid 10 Hygiea. Based on this diagram, what is the diameter of 10 Hygiea

A(n) ____________ occurs when a bit of material enters Earth's atmosphere and becomes incandescent due to friction with the atmosphere.

No asteroids have orbits that cross the Earth's orbit.

Explain how meteor showers and comets are related. Explain how we know meteor showers occur each year.

What evidence exists that some of the asteroids were geologically active in the distant past

One currently accepted theory suggests that the bodies in the Oort cloud formed

Describe the observational differences between long-period and short-period comets.

___-type asteroids are most common.

Compared to the moon, which has an average albedo of 0.12, most M- and S-type asteroids would appear brighter to us as indicated in the following graph.

Achondrites are rich in volatiles.

Jupiter was probably influential in preventing the formation of a planet at the present location of the asteroid belt.

____ asteroids appear to have nickel-iron compositions and may be the cores of broken asteroids.

Meteorites seem to be primarily composed of material very similar to the material in asteroids.

Iridium is more common in meteorites than in the crust of the Earth.