Solar System

What is the difference between the inner planets and the outer planets?

• The outer planets are smaller than the inner planets 
• The inner planets are smaller than the outer planets
• The outer planets have more rocks than the inner planets
• the inner planets are heavier than  the outer planets

Venus is called Earth's twin because they are about the same size

• True 
• False

The inner planets are called terrestrial planets because they are composed of

• water
• gas
• frozen surfaces
• rocks

One factor that makes life possible on Earth is

• an atmospher
• water
• greenhouse effect
• gravity

Which planet is the hottest planet because of its clouds?

• Venus
• Earth
• Mars
• Pluto

What celestial body is made of ice and cosmic dust?

• Meteor
• Meteoroid
• Asteroid
• Comet

Put the planets in order from the sun.

• Mercury, Venus, Mars Earth, Jupiter, Saturn, Uranus, Neptune, Pluto
• Mercury, Venus, Earth, Mars, Jupiter, Sarturn, Neptune, Uranus, Pluto
• Mercury, Venus, Earth, Mars, Jupiter, Sarturn,  Uranus, Neptune,Pluto
• Mercury, Venus, Earth, Mars, Sarturn, Jupiter, Neptune, Uranus, Pluto

Which is the closest planet to the Sun?

• Earth

• Mars

• Mercury

• Venus

Which is the farthest planet to the Sun?

• Uranus

• Neptune

• Saturn

• Jupiter

Which is the biggest planet?

• Jupiter

• Neptune

• Saturn

• Uranus