Planets, moons and Oort clouds

The center of our solar system is the....

• Earth

• Sun

• Moon

• Asteroid belt

There are _________ planets in our solar system.

• 6

• 7

• 8

• 9

The closest four planets are called the ________ planets.

• inner

• outer

The furthest four planets are called the _______ planets.

• inner

• outer

Mercury, Venus, Earth, and Mars are known as _____________ planets.

• rocky

• gaseous

Jupiter, Saturn, Uranus, and Neptune are know as ________ planets.

• rocky

• gaseous

The gaseous planets are much larger than the rocky planets.

• True

• False

___________ are similar to planets but are not large enough to have cleared their orbital region of other objects.

• dwarf planets

• comets

• asteroid belt

• Kuiper Belt

• Oort cloud

___________ are objects made of ice, dust, and rocks that orbit the Sun.

• dwarf planets

• comets

• Asteroid belt

• Kuiper belt

• Oort Cloud

The _________ is a region between the planets Mars and Jupiter containing thousands of rocky objects that orbit the Sun.

• dwarf planets

• comets

• Asteroid belt

• Kuiper belt

• Oort cloud