Galaxies and Gravity Quiz 3

What is the heliocentric model?

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

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

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

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

What is the mass of the sun?

• One trillion kilograms

• Two nonillion kilograms

• One quintillion kilograms

• One billion kilograms

What is the Milky Way galaxy a part of?

• A planet

• A galaxy group

• A solar system

• A galaxy cluster

What force holds together massive groups and clusters of galaxies?

• Friction

• Nuclear force

• Electromagnetic force

• Gravity

What is the distance between the Earth and the sun?

• 200 million kilometers

• 100 million miles

• 93 million kilometers

• 150 million miles

What is the mass of the Milky Way galaxy?

• 1.5 trillion times the mass of the sun

• One quintillion kilograms

• One nonillion kilograms

• One trillion times the mass of the sun

What is the force of gravity dependent on?

• The speed of the objects

• The color of the objects

• The temperature of the objects

• The mass and distance between the objects

What is the eventual collision mentioned in the text?

• Collision of the Milky Way and the sun

• Collision of the sun and the Earth

• Collision of the Milky Way and Andromeda galaxies

• Collision of the Earth and the moon

What is the strength of gravity between two objects if the distance between them increases?

• Increases

• Decreases

• Remains the same

• Becomes zero