Space Earth

Earth and the other planets closest to the Sun are made mostly of _______

• gas
• metal
• water
• rock

Earth's ________ on its axis causes day and night.

• rotation
• revolution
• phase
• comet

One of the main differences between the outer and inner planets is __________.

• The inner planets all have water
• the inner planets are much bigger than the outer planets
• the outer planets are gas planets
• the outer planets have rings, and the inner planets don't

Why does Earth have different seasons? 

• because of the distance between Earth and the sun 
• because of the speed of Earth as it rotates on its axis 
• because of the amount of light blocked by the moon on its axis 
• because of the tilt of Earth on its axis as it moves around the sun 

Day and night is caused by the _____________ of earth on its axis.

• revolution
• orbit
• rotation

Why is Venus hotter than Mercury?

• It is closer to the Sun

• Venus has a strong greenhouse effect

• Venus is covered with lava

• Venus has no atmosphere

What is Earth's period of revolution?

• 1 Week

• 24 Hours

• 1 year

• 365 Days

The order of the planets is:

• Mars,Venus,Earth,
  Mercury,Saturn
  Jupiter, Uranus, Neptune
• Earth,Venus,Mars
  Jupiter, Neptune,
  Mercury,Saturn,
  Uranus
• Mercury,Venus,Earth
  Mars,Jupiter,
  Saturn,Uranus
  Neptune

Which planet is fifth from the sun?

• Saturn
• Jupiter
• Mars
• Earth

Which planet has the biggest rings?

• Jupiter
• Saturn
• Uranus
• Neptune