Stars Vocabulary Quiz

The planets orbit around the

• Earth

• Moon

• Sun

• Mars

Answer explanation

The planets orbit around the Sun, not Earth, Moon, or Mars. The Sun's gravitational pull keeps the planets in their orbits.

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

__________ keeps the planets in orbit around the sun.

• Gravity

• Magnetism

• Wind

• Friction

Answer explanation

Gravity is responsible for keeping the planets in orbit around the sun. It is the force of attraction between objects with mass.

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

The sun and all the bodies that revolve around it is the

• Constellation

• Universe

• Galaxy

• Solar System

Answer explanation

The sun and all the bodies that revolve around it form the Solar System, not a constellation, the universe, or a galaxy.

Tags

NGSS.MS-ESS1-1

A giant sphere of glowing gas is a

• Comet

• Asteroid

• Planet

• Star

Answer explanation

A giant sphere of glowing gas is a star because stars are massive balls of gas that emit light and heat.

Tags

NGSS.MS-ESS1-3

How many stars are in our solar system?

• Two

• One

• Four

• Three

Answer explanation

There is only one star in our solar system, which is the Sun. The correct answer is 'One'.

There are _____ planets.

• Eight

• Seven

• Six

• Five

Answer explanation

There are eight planets. The correct choice is 'Eight'.

Tags

NGSS.MS-ESS1-3

A planet is

• a star

• a huge ball of rock

• a large object that orbits a star

• a burning ball of gas

Answer explanation

A planet is a large object that orbits a star.

A _____ is a small body that orbits a planet.

• Moon

• Meteor

• Comet

• Asteroid

Answer explanation

A moon is a natural satellite that orbits a planet. A meteor is a small celestial body that enters the Earth's atmosphere and burns up. A comet is a small icy body that orbits the Sun. An asteroid is a small rocky body that orbits the Sun. Therefore, the correct choice is Asteroid.

The outer planets are called

• Large planets

• Ringed planets

• Gas giants

• Inner planets

Answer explanation

The outer planets are known as gas giants because they are large planets composed mostly of gases.

Earth and the other planets closest to the sun are mostly made of

• Water

• Rock

• Metal

• Gas

Answer explanation

Earth and the other planets closest to the sun are mostly made of rock, not water, metal, or gas. Rock is the correct choice because it is the primary component of these planets.