Unit 10 Science 4th

How old is the Sun?

• 2.3 billion years
  

• 4.6 billion years

• 6.5 billion years

• 1.2 billion years

How far is the Sun from Earth?

• 39 million miles
  

• 1. 150 million miles

• 1. 93 million miles

• 1. 120 million miles

What is the smallest planet in the solar system?

• Mars
  

• Venus

• Mercury

• Neptune

Which planet has no atmosphere?

• Mercury
  

• Venus

• Mars

• Saturn

How long is a year on Mercury?

• 88 Earth days
  

• 365 Earth days

• 225 Earth days

• 687 Earth days

What is the hottest planet in the solar system?

• Mercury
  

• Venus

• Mars

• Jupiter

How is Venus often called?

• The red planet
  

• The brightest planet

• Earth’s sister planet

• The gas giant

What percentage of Earth's surface is covered in water?

• 50%

• 70%

• 80%

• 90%

How long does Earth take to orbit the Sun?

• 24 hours

• 365 days

• 88 days

• 687 days

Which planet is known as the Red Planet?

• Mercury

• Venus

• Mars

• Jupiter