Observing Earth and Mars from Space

Earth is the _____ planet from the Sun.

• third

• first

• second

• fourth

Which planet can support life?

• Mars

• Venus

• Earth

• Saturn

Earth is the only planet with just one ______.

• ocean

• moon

• planet

• grass

Mars is the _____ planet.

• second

• first

• fourth

• fifth

Is Mars hot or cold?

• Hot

• Cold