Exam 25: Meteorites Asteroids and Comets

Once an object strikes Earth's surface, it is called a "meteor".

What eventually happens to a comet when its orbit brings it into the inner Solar System?

What is the largest object found between Mars and Jupiter?

Eugene Shoemaker proved that the Barringer Crater is the result of an impact because he found _______________ in and around the crater that had been subjected to pressures higher than those produced by a volcano.

Iron meteorites are easy to recognize because a magnet can stick to them.

Where are S-type asteroids typically found in the Solar System?

Comet dust particles that later encounter Earth are seen as meteors.

Which comet hit Jupiter in 1994?

Most meteors come from pieces of comets.

Nonbelt asteroids can become trapped in the _______________ along Jupiter's orbit.

Stony meteorites called _______________ tend to be rock with a composition similar to Earth's basalts with no volatiles.

Why is it important to look closely at the bands of the interior of a meteorite?

What are Sun grazers?

The ____ of a comet is a lump of fragile, porous material containing ices of water, carbon dioxide, and ammonia.

Only about three comets per year plunge into the Sun and are destroyed.

A meteorite that is discovered on or in the ground, but not seen to fall, is called a(n) _______________.

What are the most common type of meteorite?

Which type of asteroid is classified to be dark as coal and probably carbonaceous?

Sequence the events in the origination of different types of meteorites.

Gas and dust released by a comet's icy nucleus produce a(n) _______________ and are then blown outward, away from the Sun.