Ch. 30-Stars, Galaxies, and Universe Practice

Front

What is the theory that states the universe began with a huge explosion?

Back

Big Bang Theory

Front

What is the brightness of a star as it appears to an observer on Earth?

Back

Apparent Magnitude

Front

What is the distance that light can travel in one year?

Back

Light year

Front

What is a small, hot, dim star that is the leftover center of an old star?

Back

White Dwarf

Front

What is gigantic explosion that causes the death of a massive star?

Back

Supernova

Front

What is a spinning neutron star that emits rapid pulses of radio and optical energy?

Back

Pulsar

Front

What is an object that is so massive and dense that even light can not escape its gravity?

Back

black hole

Front

What is a large grouping of stars, dust, and gas bound together by gravity?

Back

Galaxy

Front

What is a large cloud of dust and gas where new stars are formed or stars explode?

Back

nebula

Front

The Milky Way Galaxy is most likely

Back

a spiral galaxy