Galaxies and Life Cycle of Stars

You play with some sand at the beach and create your own tiny spiral galaxy. What would each grain of sand represent in your model?

• A galaxy

• A planet

• A star

• A moon

What do astronomers presume is located at the center of the Milky Way galaxy?

• A giant star

• A big bang

• Another galaxy

• A black hole

What is the name of the galaxy in which we live?

• Milky Way galaxy

• Andromeda galaxy

• Whirlpool galaxy

• Black Eye galaxy

Which of the following is correctly ordered from largest to smallest?

• Solar system, galaxy, universe

• Universe, galaxy, solar system

• Universe, solar system, galaxy

• Galaxy, universe, solar system

What is a galaxy?

• All the matter that scientists have been able to identify

• Huge systems of billions of stars, gas, and dust held together with gravity

• A cloud of gas and dust that spawns new stars

• A burning sphere of gases

A(n) _______ is a scientist that studies stars, planets, and other objects in space.

• Astronomer

• Biologist

• Geologist

• Chemist

A(n) _______ is a huge system of millions or billions of stars, together with gas and dust, held together by gravity.

• Galaxy

• Planet

• Asteroid

• Comet

A(n) _______ galaxy is a random, scattered type of galaxy that does not form a distinct shape or pattern.

• Irregular

• Spiral

• Elliptical

• Lenticular

The spiral shaped galaxy in which we live is known as the _______ galaxy.

• Milky Way

• Andromeda

• Whirlpool

• Sombrero

The _______ refers to all of space and everything in it.

• Universe

• Galaxy

• Solar System

• Planet