Planet Characteristics

Which is the correct order of planets from the sun?

• Mercury Venus Earth Mars Jupiter Neptune Uranus Saturn

• Neptune Uranus Saturn Jupiter Mars Earth Venus Mercury

• Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune

• Mars Venus Earth Mercury Jupiter Saturn Uranus Neptune

The ___ of a planet determines its day.

• ellipse

• revolution

• orbit

• rotation

The ___ of a planet determines its year.

• rotation

• ellipse

• revolution

• axis

All inner planets have the following in common except:

• signs of volcanic activity

• layers of core, mantle, crust

• ice on their surfaces

• solid, rocky surface

Besides Venus, which inner planet has more than 90% carbon dioxide in its atmosphere?

• Mercury

• Venus

• Earth

• Mars

Which inner planet has a day about the same length as Mars?

• Mercury

• Venus

• Earth

• Mars

Which inner planet has the tallest mountain in the solar system?

• Mercury

• Venus

• Earth

• Mars

Which inner planet has clouds of acid (sulfuric acid)?

• Mercury

• Venus

• Earth

• Mars

Besides Venus, which inner planet has no moons?

• Mercury

• Venus

• Earth

• Mars

Which inner planet has a day that is longer than its year? Its day is 244 Earth days; its year is 225 Earth days?

• Mercury

• Venus

• Earth

• Mars