Could we live on another planet?

The substance that is needed for life is

• Water

• Oxygen

• Carbon

Earth is the only planet known to have liquid water on its surface.

• True

• False

What part of the atmosphere do humans need to breathe?

• Oxygen

• Nitrogen

• Carbon dioxide

• Methane

No other planets other than Earth have atmospheres.

• True

• False

What is the temperature on Mars?

• -60 degrees

• 0 degrees

• 100 degrees

• 100,000 degrees

At 462 degrees, what is the warmest planet in our solar system?

• Mercury

• Venus

• Jupiter

• Neptune

Neptune and Venus have a very similar temperature. What is it?

• 0

• -500 degrees

• -210 degrees

• 100 degrees

When was Voyager I sent off into space?

• 1577

• 1877

• 1977

• 2007

The Voyager I spacecraft has left the solar system.

• True

• False

There is liquid water under the surface of some planets.

• True

• False

• Nobody knows