Chapter 4 Retest

Front

How long is the rotation of the earth?

Back

Approximately 24 hours (23.93 hours for a sidereal day)

Front

What does the earth rotate on?

Back

Its axis

Front

What is the composition of an asteroid?

Back

Asteroids are composed mainly of rock and metal.

Front

What is the Period of Rotation?

Back

The period of rotation is the time taken for one complete rotation around an axis.

Front

What is the composition of a comet?

Back

Comets are composed of ice, dust, and rocky material.

Front

What is a sidereal day?

Back

A sidereal day is the time it takes for the Earth to rotate once on its axis relative to the stars, approximately 23.93 hours.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of the Earth on its axis, while revolution is the movement of the Earth around the Sun.

Front

What causes day and night?

Back

Day and night are caused by the rotation of the Earth on its axis, exposing different parts to sunlight.

Front

What is an axis?

Back

An axis is an imaginary line around which an object rotates.

Front

What are meteoroids?

Back

Meteoroids are small rocky or metallic bodies in outer space, smaller than asteroids.