Stars

Front

What does the color of a star indicate?

Back

The color of a star indicates its temperature.

Front

If two stars have the same brightness but one is farther away, what can we conclude?

Back

The closer star must be brighter.

Front

Which color of star is the hottest?

Back

Blue.

Front

True or False: Stars are really close together in outer space.

Back

False.

Front

Which star is closest to Earth?

Back

The Sun.

Front

What is a star?

Back

A star is a massive, luminous sphere of plasma held together by gravity.

Front

What is the main source of a star's energy?

Back

Nuclear fusion in its core.

Front

What is the life cycle of a star?

Back

A star goes through stages: nebula, main sequence, red giant, and then either a white dwarf, neutron star, or black hole.

Front

What is a supernova?

Back

A supernova is a powerful explosion that occurs at the end of a star's life cycle.

Front

What is a galaxy?

Back

A galaxy is a massive system that contains stars, star clusters, dust, gas, and dark matter.