The Solar System

How long does earth's revolution around the sun take?

• 365 days (1 year)
• 1 day
• 1 month
• 4 years

What is a cloud of gas and dust in space that forms stars?

• comet
• meteor
• nebula

What are patterns of stars against the night sky?

• Constellations
• Galaxies
• Solar system

The sun and all of the objects that orbit it

• Atmosphere
• Solar system
• Galaxy

What are moon(s) orbiting a body in space?

• Satellite
• Meteor
• Comet

What are space objects that burn up as they enter Earth's atmosphere?

• nebula
• meteor
• comet

What is the area that separates the inner and outer planets called?

• atmosphere
• light year
• asteroid belt

What is the unit to measure distances between objects in space called?

• light year
• orbit
• satellites

What is the air that surrounds the planet earth called?

• atmosphere
• nebula
• orbit

The planet closest in size to earth is

• Mercury
• Venus
• Pluto