Earth Science 2.1.4 Quiz

The farther a star is away from Earth, the more it is _______.

• shrinking

• blue shifted

• red shifted

black hole

• an object so dense that even light can not escape its gravity

• a large star that is relatively cool

red giant

• a large star that is relatively cool

• an old, very dense, hot star that is cooling

white dwarf

• an old, very dense, hot star that is cooling

• a mass of gas and dust

nebula

• a mass of gas and dust

• an old, very dense, hot star that is cooling

Which best describes the Big Bang Theory?

• Matter was compressed into a single point and then exploded outward to form the universe.

• Stars burn off their fuel, expand, and shed their shells.

Which best explains why the sun maintains its size and shape?

• The sun burns from its core to its surface.

• Pressure caused by high temperatures are balanced by gravity.

A star turns matter into energy in the process of ________.

• nuclear fusion

• Gravity

A galaxy that has an undefined shape is best classified as a(n) ________ galaxy.

• iregular galaxy

• Spiral galaxy

The sparse area surrounding a spiral galaxy is called its _____.

• Halo

• Arms