Unit 6 Extra Credit

Front

What is a nebula?

Back

A nebula is a large cloud of gas and dust in space, often the birthplace of stars.

Front

What is the composition of the Crab Nebula?

Back

The Crab Nebula is composed of clouds of gas and dust.

Front

What does the H-R Diagram represent?

Back

The H-R Diagram shows the relationship between a star's temperature and its brightness.

Front

What can scientists learn from studying light from distant galaxies?

Back

Scientists can learn that objects in the universe are moving apart.

Front

What was the state of matter before the Big Bang?

Back

Before the Big Bang, matter was packed tightly together.

Front

Which is hotter: giants or white dwarfs?

Back

White dwarfs are hotter than giants.

Front

What is the significance of the Big Bang theory?

Back

The Big Bang theory explains the origin of the universe and its expansion.

Front

What is a star?

Back

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

Front

What is the life cycle of a star?

Back

The life cycle of a star includes stages such as nebula, main sequence, red giant, and supernova.

Front

What is a galaxy?

Back

A galaxy is a vast system of stars, gas, dust, and dark matter bound together by gravity.