Our Universe - STAAR Review

A star that expands and cools once it runs out of hydrogen.

• pulsar

• black hole

• red giant

• supernova

A massive and dense object from which not even light can escape.

• black hole

• supernova

• pulsar

• red giant

What color are the hottest stars?

• red
• yellow
• orange
• blue

A gigantic explosion that occurs at the end of a massive stars' life.

• pulsar

• red giant

• supernova

• black hole

What is the best description of a nebula?

• a cloud of gas and dust that produce light due to fusion

• a large group of stars held together by gravity

• a star and planets held together by gravity

• a cloud of gas and dust where stars are formed

The imaginary line through the center of the Earth that it spins on is called the:

• Axis

• Equator

• Latitude

• Longitude

Which star has the coolest temperature?

• Yellow Star

• Red Star

• Orange Star

• Blue Star

Stars are made primarily of which elements?

• Hydrogen only
• Hydrogen and Lithium
• Hydrogen and Sodium
• Hydrogen and Helium

What objects are found at C?

• Blue giants

• Red giants

• White dwarfs

• Main sequence stars

Why is the Equator warmest?

• Because it is closest to the sun.
• Because it receives the most direct sunlight
• Because no clouds form here.
• Because it is far from the sun