Chapter 11 Lesson 1 Flashcard Review

Front

What are comets made of?

Back

Gas, dust, and ice.

Front

What is the period of revolution?

Back

The time it takes an object to travel once around the Sun.

Front

Which of the following is NOT true about dwarf planets?

Back

They have more mass than nearby objects.

Front

What is a comet?

Back

A small, rocky and icy object that orbits the Sun.

Front

Which planet is the third from the Sun among the inner planets?

Back

Earth.

Front

What is the difference between a comet and an asteroid?

Back

Comets are made of ice and dust, while asteroids are primarily made of rock and metal.

Front

What is the Kuiper Belt?

Back

A region of the solar system beyond Neptune that contains many small icy bodies, including comets.

Front

What defines a dwarf planet?

Back

A celestial body that orbits the Sun, is spherical in shape, but has not cleared its neighboring region of other objects.

Front

What is the Oort Cloud?

Back

A theoretical cloud of icy bodies believed to surround the solar system, thought to be the source of long-period comets.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of an object on its axis, while revolution is the movement of an object around another object.