Exploring Mars: The Red Planet Facts

Mars is the ______ planet from the Sun.

• Second

• Third

• Fourth

• Fifth

Why does Mars appear red in color?

If Earth were the size of a nickel, NASA says Mars would be about as big as a (a)   .

A single day on Mars is slightly longer than an Earth day and is called a (a)   .

How many moons does Mars have?

• One

• Two

• Three

• Four

What is the name of the largest volcano in the solar system, which is located on Mars?

• Mount Everest

• Valles Marineris

• Olympus Mons

• Mauna Loa

The Martian canyon system called Valles Marineris is about ______ times the size of Earth's Grand Canyon.

• 2

• 5

• 10

• 50

What gas makes up most of the thin atmosphere on Mars?

(a)  

Why would the sky on Mars look hazy and red to a person standing on the surface?

Mars is about ______ the size of Earth.

• One quarter

• Half

• Double

• Triple