Unit 8: Solar System Review

Front

What is a tether in space exploration?

Back

A tether is a rope-like device that attaches an astronaut to a space vehicle during a spacewalk.

Front

Why is a tether necessary for a spacewalk?

Back

Without a tether, astronauts would float away due to the lack of gravity in space.

Front

What are the four planets closest to the Sun called?

Back

The four planets closest to the Sun are called rocky (terrestrial) planets.

Front

What are the characteristics of the four planets farthest from the Sun?

Back

The four planets farthest from the Sun are gas giants.

Front

What causes planets to orbit the Sun?

Back

The forward motion of the planet and the gravitational pull of the Sun.

Front

What would happen to the planets if the Sun were to disappear?

Back

The planets would travel in a different path.

Front

What is the center of our solar system?

Back

The Sun is the center of our solar system.

Front

What is the gravitational force?

Back

Gravitational force is the attraction between two masses, such as the Sun and the planets.

Front

What are terrestrial planets?

Back

Terrestrial planets are rocky planets that are closer to the Sun, including Mercury, Venus, Earth, and Mars.

Front

What are gas giants?

Back

Gas giants are large planets that are mostly made of gases, including Jupiter, Saturn, Uranus, and Neptune.