12/4 Review Life cycle and H-R Diagram Practice

Front

What is the Hertzsprung-Russell Diagram?

Back

A graphical representation of stars that plots their brightness against their temperature, used to classify stars and understand their life cycles.

Front

What type of star is Sirius B?

Back

Hot and Dim Star.

Front

What kind of star is our Sun?

Back

Main sequence star.

Front

How does a red supergiant compare to a white dwarf?

Back

A red supergiant is colder and brighter than a white dwarf.

Front

Where do all stars begin their life?

Back

In a Nebula.

Front

What is a black hole?

Back

An object so dense that its gravity prevents even light from escaping.

Front

What is the main sequence in stellar evolution?

Back

The stage in a star's life where it fuses hydrogen into helium in its core, representing the longest phase of a star's life.

Front

What happens to a star after it exhausts its hydrogen fuel?

Back

It expands into a red giant or supergiant, depending on its mass.

Front

What is a white dwarf?

Back

A small, dense star that is the remnant of a low to medium mass star after it has shed its outer layers.

Front

What is the significance of a star's color in the H-R Diagram?

Back

A star's color indicates its temperature; blue stars are hotter, while red stars are cooler.