ESS Semester 1 Exam Review Part 1

Front

What color are the hottest stars?

Back

Blue stars are the hottest stars in the universe.

Front

What are the main elements that make up the universe?

Back

The main elements that make up the universe are Hydrogen and Helium.

Front

What process begins when a star is born?

Back

Nuclear fusion begins when a star is born.

Front

What is the stage that follows a red giant in stellar evolution?

Back

The stage that follows a red giant is the planetary nebula.

Front

What type of galaxy has no defined pattern or shape?

Back

An irregular galaxy has no defined pattern or shape.

Front

What is a nebula?

Back

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

Front

What is nuclear fusion?

Back

Nuclear fusion is the process where two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion of a star, marking the end of its life cycle.

Front

What is a black hole?

Back

A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is the difference between a red giant and a supergiant?

Back

A red giant is a star that has expanded and cooled, while a supergiant is a much larger star that has also expanded but is more massive.