Mecury: The Smallest Planet Free School Video

What is the closest planet to the sun?

• Venus

• Earth

• Mercury

• Mars

How long does it take Mercury to complete one orbit around the sun?

• 24 hours

• 365 days

• 88 days

• 59 days

Which of the following describes Mercury's atmosphere?

• Thick and dense

• Almost nonexistent

• Similar to Earth's

• Very humid

What is the temperature like on Mercury during the night?

• Warm and pleasant

• Below freezing

• Mild and comfortable

• Hot and dry

What type of body does Mercury have?

• Gaseous

• Rocky

• Icy

• Liquid

What spacecraft provided the first close-up images of Mercury?

• Voyager 1

• MESSENGER

• Mariner 10

• Hubble

How many moons does Mercury have?

• One

• Two

• None

• Four

What did the MESSENGER mission discover about Mercury?

• It has a thick atmosphere

• It once had active volcanoes

• It is the hottest planet

• It has many rings

Who was Mercury named after?

• A Greek god

• A Roman messenger

• A famous scientist

• An ancient philosopher

How does Mercury's size compare to other planets?

• It is the largest planet

• It is the smallest planet

• It is the same size as Earth

• It is larger than Venus