Formation and Motion of Galaxies Review

Front

What is a planet?

Back

A celestial body that orbits the sun and is large enough to be rounded by its own gravity.

Front

What are the main components involved in the formation of the solar system?

Back

Dust and gas pulled together by gravity.

Front

What is the sun?

Back

The star that the Earth revolves around, providing heat and light.

Front

Order these objects from smallest to largest: planets, solar system, galaxy, universe.

Back

Planets, solar system, galaxy, universe.

Front

What is a characteristic of a spiral galaxy?

Back

It has a disk shape and a central nuclear bulge.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

Front

What is the universe?

Back

The totality of space, time, matter, and energy, including all galaxies and celestial bodies.

Front

What is gravity?

Back

A force that attracts two bodies towards each other, essential for the formation of celestial bodies.

Front

What is a solar system?

Back

A collection of celestial bodies, including a star and the objects that orbit it, such as planets and moons.

Front

What is a comet?

Back

A small celestial body made of ice, dust, and rocky material that, when close to the sun, displays a visible atmosphere or tail.