Solar System

What is the size of Mercury compared to Earth?

• Mercury is about 1/3 the size of Earth

• Mercury is about the same size as Earth

• Mercury is about 2 times the size of Earth

• Mercury is about 1/2 the size of Earth

What is the surface of Mercury like?

• Rocky and cratered

• Smooth and icy

• Covered with thick clouds

• Oceanic and wet

What is the atmosphere of Mercury like?

• Thin and composed mostly of oxygen, sodium, hydrogen, helium, and potassium

• Thick and composed mostly of nitrogen and oxygen

• Rich in carbon dioxide and nitrogen

• Dense with high levels of methane

Mercury's closeness to the Sun affects its ability to support life by:

• Increasing its temperature to levels too high for life

• Providing optimal conditions for life

• Having no effect on its ability to support life

• Making it too cold for life

What is the gravity of Venus compared to Earth's?

• The gravity of Venus is about 90% that of Earth's.

• The gravity of Venus is about 50% that of Earth's.

• The gravity of Venus is about 110% that of Earth's.

• The gravity of Venus is about 70% that of Earth's.

What is the surface of Venus like?

• Rocky and hot

• Icy and cold

• Covered with water

• Sandy and dry

What is the atmosphere of Venus mostly composed of?

• Carbon Dioxide

• Nitrogen

• Oxygen

• Hydrogen

What is the surface of Earth mostly composed of?

• Water

• Sand

• Ice

• Rock

What gases are present in Earth's atmosphere that make it perfect for life?

• Nitrogen and Oxygen

• Carbon Dioxide and Methane

• Helium and Argon

• Hydrogen and Neon

What is Earth's position from the Sun?

• Third

• First

• Second

• Fourth