Stars Test Retake

A big cloud of dust and gas where all

stars begin their life cycle is called a

• solar system

• universe

• galaxy

• nebula

Which is the stage where a massive star

explodes and releases a lot of energy?

• Red supergiant

• Supernova

• Black hole

• Main sequence

What color are the hottest stars?

• Green

• Yellow

• Blue

• Red

What leads directly to the formation

of black holes?

• Neutron Star

• Planetary nebula

• Supernova

• Blue giant

measures how bright a star would be in relation to the sun if all stars were the same distance from the observer

• Brightness
• Luminosity
• Apparent Magnitude
• Photic Strength

Controlled by the rate of fusion in a stars core. The stars color is connected to this too.

• Temperature
• Star Temperature
• Star volume
• Luminosity

A diagram or graph that shows the relationship between luminosity and temperature in a star.

• HR (Hertzsprung - Russell) Diagram
• Color vs. Brightness chart
• Temperature vs. Luminosity chart
• Stellar life cycle chart

Which stage of the star life cycle does fusion occur and the star is most stable?

• Birth - protostar(s)

• Main Sequence - star

• Old Age - red giant

• Death - white dwarf

Which stage of a star's life cycle does fusion stop, the core is crushed by gravity and it glows bright white?

• Birth - protostar(s)

• Main Sequence - star

• Old Age - red giant

• Death - white dwarf

Everything revolves around ___________.

• stars

• planets

• moons

• galaxies