12-2 The Inner and Outer Planets

Front

What is the primary reason we use radar to produce an image of Venus’s surface?

Back

We cannot see through Venus’s atmosphere to its surface.

Front

Where is the asteroid Ida located?

Back

Ida is located in the Asteroid Belt between Mars and Jupiter.

Front

What distinguishes a dwarf planet from a regular planet?

Back

Dwarf planets have not cleared other objects from the path of their orbit.

Front

Which terrestrial planet is farther from the sun than Earth?

Back

Mars is the terrestrial planet that is farther from the sun than Earth.

Front

Which outer planet is closest to the sun?

Back

Jupiter is the outer planet closest to the sun.

Front

What are the two main categories of planets in our solar system?

Back

The two main categories are terrestrial planets and gas giants.

Front

Name the four terrestrial planets in our solar system.

Back

Mercury, Venus, Earth, and Mars.

Front

What is the main characteristic of gas giant planets?

Back

Gas giants are primarily composed of hydrogen and helium and lack a solid surface.

Front

What is the Kuiper Belt?

Back

The Kuiper Belt is a region of the solar system beyond Neptune that contains many small icy bodies.

Front

What defines a planet in our solar system?

Back

A planet must orbit the sun, be spherical in shape, and have cleared its orbit of other debris.