HR diagram and Cosmos

Front

What is the Hertzsprung-Russell diagram?

Back

A graphical representation that plots stars according to their luminosity and temperature.

Front

What type of star is Aldebaran?

Back

A red giant.

Front

What is the main component of our Solar System?

Back

One star, which is the Sun.

Front

What is a comet?

Back

An object orbiting the Sun, made of ice and rock, that has a tail pointing away from the Sun.

Front

What is the correct order of the components of the universe from largest to smallest?

Back

Universe, galaxy, solar system, star, planet.

Front

What does luminosity refer to in stars?

Back

The total amount of energy emitted by a star per unit of time.

Front

What is a main sequence star?

Back

A star that is in the stable phase of its life cycle, fusing hydrogen into helium in its core.

Front

What is a white dwarf?

Back

A small, dense star that is the remnant of a low or medium mass star after it has exhausted its nuclear fuel.

Front

What is a supergiant star?

Back

An extremely large star that is much more massive than the Sun and has a very high luminosity.

Front

What is the relationship between a star's temperature and its color?

Back

Hotter stars appear blue or white, while cooler stars appear red or orange.