Inner Planets - A Spin Around the Universe

What makes Mercury unique among the inner planets?

• It is the closest planet to the Sun.

• It has a thick atmosphere.

• It is the largest of the inner planets.

• It has the most moons.

Why is Venus hotter than Mercury?

• It has more volcanoes.

• It rotates faster.

• Its atmosphere traps heat effectively.

• It is closer to the Sun.

What is an astronomical unit?

• The distance across the Milky Way.

• The distance from the Sun to Earth.

• The distance from the Sun to Neptune.

• The distance from Earth to the Moon.

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

What evidence suggests Mars had water in the past?

• Active volcanoes

• Frozen polar ice caps

• Rings around the planet

• A thick atmosphere

What separates the inner planets from the outer planets?

• The asteroid belt

• A black hole

• A large gaseous cloud

• An electromagnetic field