Planets: Mercury

What is the average distance of Mercury from the Sun?

•  93 million kilometers

• 36 million kilometers

• 58 million kilometers

•  250 million kilometers

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

•  365 Earth days

• 88 Earth days

• 224 Earth days

• 687 Earth days

Which of the following is NOT a component of Mercury's atmosphere?

• Oxygen

• Nitrogen

• Sodium

• Helium

What are the daytime surface temperatures on Mercury like during the day?

• 100 degrees Celsius

• 58 degrees Celsius

• 500 degrees Celsius

• 427 degrees Celsius

How many moons does Mercury have?

• Zero

• One

• Two

• Three

What causes the heavily cratered surface of Mercury?

• Volcanic eruptions

• The Weather

• Asteroid and comet impacts

• Earthquakes

What is different about Mercury's orbit compared to other planets?

• It is perfectly circular

• It is the slowest

• It is the most elongated

• It is the most distant

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

• 1 Earth day

• 24 Earth hours

• 59 Earth days

• 365 Earth days

Who is Mercury named after in Roman mythology?

• A demigod

• A Star

• An Asteroid

• A God

Which spacecraft visited Mercury for close study?

• Mariner 10

• Voyager

• Cassini

• Hubble