Astronomy Lessons 5-7

The second planet of the Solar System is...

• Venus
• Mercury
• Mars

One full orbit is called a...

• Axis

• Rotation

• Inertia

• Revolution

How long does Earth's revolution around the Sun take?

• 24 hours

• 365 days

• 10 years

• 30 minutes

Which planet is the largest?

• Jupiter
• Saturn
• Uranus
• Neptune

How many planets are in our solar system?

• 6

• 7

• 8

• 9

Saturn is known for it's _______. 

• rings
• atmopshere
• moons
• temperature 

Saturn's rings are made of chunks of 

• volcanoes
• ice and rock
• nitrogen and helium 
• ice and 

What planet is the smallest and fastest?

• Mercury

• Venus

• Mars

• Jupiter

How many outer planets are there?

• 4
• 8
• 9
• 20

Which is hotter: Venus or Mercury?

• Venus
• Mercury
• They are exactly the same.
• Sun