Astronomy Basics

Front

What do large stars often end their lives as?

Back

Black holes.

Front

What do small stars often end their lives as?

Back

White dwarfs.

Front

What two characteristics of stars are plotted on HR diagrams?

Back

Temperature and Luminosity.

Front

Which star has a higher apparent magnitude: Sun, Polaris, Deneb, or Altaire?

Back

Sun.

Front

What is the material ejected from a crater that forms lines we can measure?

Back

Rays.

Front

What is a black hole?

Back

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

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 exhausted its nuclear fuel.

Front

What is an HR diagram?

Back

A graph that plots stars according to their luminosity and temperature.

Front

What is apparent magnitude?

Back

A measure of the brightness of a star as seen from Earth.

Front

What is luminosity?

Back

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