Cumulative Quiz: The Universe 11/22

What is a comet composed of?

• Ice, rock, and dust

• Gas and dust

• Metal and rock

• Water and gas

A galaxy with an oval or round shape is known as a (a)   galaxy.

• Spiral

• Irregular

• Elliptical

Identify the galaxy type: These galaxies have an odd shape and consist of both older and younger stars.

• A) Elliptical

• B) Spiral

• C) Irregular

Which galaxy type consists mostly of older stars?

• Spiral

• Elliptical

• Irregular

Which type of galaxy is ESO 325-G004 an example of?

• Elliptical

• Spiral

• Irregular

Identify the galaxy type: These galaxies have spiral arms and consist mostly of younger stars.

• A) Elliptical

• B) Spiral

• C) Irregular

The shape of Galaxy 2 is (a)   .

• Spiral

• Elliptical

• Irregular

In the process of (a)   , hydrogen is converted into helium in a star’s core.

• Nuclear fission

• Nuclear fusion

• Combustion

• Evaporation

A star is a hot ball of (a)   where the density and temperature are great enough to cause nuclear fusion.

• Gas

• Liquid

• Solid

• Plasma

How does a star produce light and heat?

• Through nuclear fusion in its core

• By burning gases on its surface

• Through chemical reactions

• By reflecting light from other stars