Semester Review: Astronomy

Front

Why is making a model of the solar system difficult?

Back

The solar system is so big and the objects in it are so small in comparison.

Front

What feature of the Sun causes the orbits of the objects in the solar system?

Back

Its gravitational pull.

Front

How many stars are in our solar system?

Back

1.

Front

What added new materials to the planets when the solar system was young?

Back

Impacts of smaller objects.

Front

What happens to gravity between two objects as the distance between them increases?

Back

It decreases.

Front

What is the center of our solar system?

Back

The Sun.

Front

What are the four terrestrial planets in our solar system?

Back

Mercury, Venus, Earth, and Mars.

Front

What are gas giants?

Back

Planets that are large and made mostly of gases, like Jupiter and Saturn.

Front

What is the asteroid belt?

Back

A region in space between Mars and Jupiter where many asteroids are found.

Front

What is a comet?

Back

A small icy body that, when passing close to the Sun, heats up and begins to release gases, forming a tail.