Inner & Outer Planets

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

• gas
• metal
• water
• rock

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

Which best explains why the moon has phases?

• The moon’s position changes in relation to the sun and Earth. 
• The sun’s position changes in relation to the moon and Earth. 
• The Earth casts a shadow on the moon as it rotates. 
• The moon rotates along its axis

The "red planet" is

• Venus
• Uranus
• Mars
• Saturn

Which planet looks like a blue orb with no clouds?

• Mercury
• Saturn
• Uranus
• Pluto

Whats the fourth closest planet to the sun?

• Mars
• Earth
• Jupiter
• Uranus

Which of the following planets is farthest from the Sun?

• Mars
• Mercury
• Venus
• Earth 

Models of the solar system with Sun at the center are called _____________________ models.

• geocentric

• heliocentric

• terrestrial

• none of the above

________is a large, round body that revolves around a star.

• plant

• planet

• star

• sun

Which is the largest planet in our solar system?

• Sun

• Earth

• Jupiter

• Mars