Unit 5: The Universe

Front

What are gas/dust clouds that form stars called?

Back

Nebulas

Front

What is the explosion at the death of a massive star?

Back

Supernova

Front

What elements are most stars made of?

Back

Hydrogen and Helium

Front

What is the correct order of star colors from coolest to hottest?

Back

Red, Yellow, White, Blue

Front

What type of galaxy has no defined pattern or shape?

Back

Irregular

Front

What is a star?

Back

A massive, luminous sphere of plasma held together by gravity, primarily composed of hydrogen and helium.

Front

What is a nebula?

Back

A giant cloud of gas and dust in space, often the birthplace of stars.

Front

What is a supernova?

Back

A powerful and luminous explosion that occurs at the end of a massive star's life cycle.

Front

What is the difference between a protostar and a star?

Back

A protostar is an early stage in star formation, while a star is a fully formed celestial body that undergoes nuclear fusion.

Front

What are the two main types of galaxies?

Back

Spiral and elliptical galaxies.