Exploring The Planets: Mercury

Mercury is the closest planet to the ____.

• Moon

• Sun

• Earth

• Mars

How many moons does Mercury have?

• One

• Two

• None

• Three

Mercury travels around the sun at a speed of __ miles per second.

• 20

• 25

• 31

• 35

Mercury is one of the four ____ planets.

• Gas

• Ice

• Terrestrial

• Water

Mercury is covered with craters made by ______.

• Water erosion

• Space rocks

• Wind

• Volcanic activity

How long does it take Mercury to complete one full rotation on its axis?

• 24 Earth hours

• 59 Earth days

• 88 Earth days

• 365 Earth days

Mercury's year is how many Earth days long?

• 88

• 180

• 365

• 730

Mercury's surface is similar to which celestial body?

• Mars

• Earth's moon

• Jupiter

• Saturn

What is the shape of Mercury's orbit?

• Circular

• Elliptical

• Triangular

• Square

What is the main component of Mercury's outer shell?

• Ice

• Liquid

• Solid

• Gas