The Life and Death of Stars

Approximately how many stars are in the Universe?

• millions

• billions

• trillions

We know exactly how many stars there are in the Universe.

• True
• False

Put the stages of star formation in order from first to last.

• The energy is pushed outward while the core's gravity pulls inward.

• Gravity pulls the gases closer together.

• Competing forces of outward push and inward pull shapes surrounding gases into a star.

• Gases and dust in the Universe form clouds.

• The gases at the center (core) of the cloud combine to create energy.

A star is a sphere of very hot glowing gas that produces its own light.

• True
• False

All stars are white.

• True
• False

The color of a star tells us its _____.

• size

• temperature

• age

Red stars are the hottest and blue stars are the coolest.

• True
• False

What are the 4 star sizes?

• supergiant

• supernova

• hypergiant

• giant

• dwarf

Dwarf stars are the largest type of star.

• True
• False

The largest known stars are hypergiants.

• True
• False