Exam 19: Meteorites, Asteroids, and Comets

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

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

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

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

Achondrites are rich in volatiles.

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

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

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

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

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

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

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.

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

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

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

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

Meteors strike Earth's atmosphere every day.

___-type asteroids are most common.

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.

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