Ch. 2 Test Review

Front

What is the hottest type of star?

Back

A blue main sequence star is the hottest type of star.

Front

Which type of galaxy contains many old, red stars?

Back

Elliptical galaxies have many old, red stars.

Front

What does the Hertzsprung-Russell diagram plot?

Back

The Hertzsprung-Russell diagram plots the luminosity and temperature of stars.

Front

In which galaxy is our solar system located?

Back

Our solar system is located in the Milky Way galaxy.

Front

What does the Big Bang Theory state about the universe?

Back

The Big Bang Theory states that the universe began from a single point.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a low-mass star.

Front

What are the main characteristics of spiral galaxies?

Back

Spiral galaxies have arms that spiral outwards and contain young stars.

Front

What is the difference between a red supergiant and a blue main sequence star?

Back

A red supergiant is a large, cool star, while a blue main sequence star is hot and smaller.

Front

What is dark matter?

Back

Dark matter is a type of matter that does not emit light or energy, making it invisible.

Front

What is the significance of the Milky Way galaxy?

Back

The Milky Way galaxy is the galaxy that contains our solar system.