Inner planets
Outer planets
Stars
Outer Space
100

Which planet is closest to the sun?

Mercury

100

Which planet is furthest from the sun?

Neptune

100

How many stars are in our solar system?

1, the sun

100

What effect does the moon have on Earth?

The gravity pulls on Earth's water, and creates the tides

200

What do all of the inner planets have in common?

Terrestrial or rocky surface

200

What is the largest planet?

Jupiter

200

Where is the sun in our solar system?

In the center

200

What keeps the planets orbiting around the sun?

The gravity from the sun

300

What is the name of the zone Earth is located in, that allows it to support life?

Habitable Zone or Goldilocks Zone

300

Which planet is known for its rings?

Saturn

300

Why does the sun appear so bright to us on Earth?

Because it is so close to the Earth

300

Where is the asteroid belt located?

Between Mars and Jupiter

400

What is the hottest planet?

Venus

400

Which is the only planet to rotate clockwise?

Uranus

400

What determines the apparent brightness of a star?

The distance from Earth

400

What galaxy is Earth in?

The Milky Way

500

Which planet is known as the red planet, and why?

Mars, the iron in its surface causes it to look rusty

500

What do all of the outer planets have in common?

They are gas giants, and have rings

500

What determines the actual brightness of a star?

The temperature

500

How are large distances measured in space?

Light years