Galaxies and Gravity Quiz

What is the heliocentric model?

• The model that describes the moon's orbit around the Earth

• The model that describes the Earth's rotation on its axis

• The model that describes the Earth's orbit around the sun

• The model that describes the sun's orbit around the Earth

What is the mass of the sun?

• 10 to the power of 30 kilograms

• 1.5 trillion times the mass of the Milky Way galaxy

• 10 to the power of 24 kilograms

• 10 to the power of 27 kilograms

What is the Local Group?

• A group of galaxies

• A group of asteroids in the asteroid belt

• A group of planets in the solar system

• A group of stars in the Milky Way galaxy

What is the force that holds together massive groups and clusters of galaxies?

• Nuclear force

• Frictional force

• Gravitational force

• Electromagnetic force

What is the distance between the Earth and the sun?

• 150 million kilometers

• 200 million miles

• 93 million miles

• 100 million kilometers

What is the mass of the Milky Way galaxy?

• 10 to the power of 27 kilograms

• 1.5 quintillion kilograms

• 1.5 trillion times the mass of the sun

• 10 to the power of 30 kilograms

What is the eventual collision mentioned in the text?

• Collision between the Milky Way and Andromeda galaxies

• Collision between the Earth and a comet

• Collision between the Earth and the moon

• Collision between the sun and a black hole

What is the force that tries to pull objects with mass closer together?

• Gravitational force

• Frictional force

• Electromagnetic force

• Nuclear force