Objects in our Solar System

The largest planets in our solar system are called gas giants.

• True

• False

One object traveling around another object in space.

• Rotation

• Orbit

• Revolution

Which object of the following is smallest?

• Galaxy

• Star

• Solar System

• Planet

Hubble discovered that the Universe was expanding. The Hubble Telescope was named after Hubble because of his advancements in astronomy.

• True
• False

How many stars are in a solar system?

• 1 or 2

• 100

• millions

• billions

Which best describes a galaxy?

• a system containing dust, gas, and stars
• a few stars that form patterns in the sky
• a collection of all the stars in the universe
• a group of planets that revolve around a star

A large rocky object that orbits a planet is called a ____________.

• moon
• planet
• dwarf planet
• comet

Between which two planets is the asteroid belt located?

• Mars and Earth

• Mars and Jupiter

• Jupiter and Saturn

• Uranus and Neptune

What characteristic do Earth and Mercury share?

• They have the same number of moons
• They have about the same density
• They have about the same surface temperatur
• They orbit the sun at about the same velocity

What is the name for rocky objects that orbit the sun?

• asteroids
• stars
• comets
• moons