Galaxies and Gravity

Front

What is a galaxy?

Back

A galaxy is a large system of stars, gas, dust, and dark matter bound together by gravity.

Front

Where is the sun located in the Milky Way galaxy?

Back

The sun is located within an outer arm of the Milky Way galaxy.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies toward each other, depending on their masses and the distance between them.

Front

What keeps planets in orbit around the sun?

Back

Gravity keeps planets in orbit around the sun.

Front

True or False: Galaxies are moving toward one another and may collide in the future.

Back

True.

Front

What determines the strength of gravity between two objects?

Back

The strength of gravity is determined by the mass of the objects and the distance between them.

Front

If two planets have the same mass, which one will have a stronger gravitational force if one is closer to the sun?

Back

The planet that is closer to the sun will have a stronger gravitational force.

Front

What is the center of a galaxy called?

Back

The center of a galaxy is often called the galactic core.

Front

What is dark matter?

Back

Dark matter is a type of matter that does not emit light or energy, making it invisible and detectable only through its gravitational effects.

Front

What is the Milky Way?

Back

The Milky Way is the galaxy that contains our solar system.