Front

Stars are formed from big clouds of gas and dust is known as:

Back

nebulae

Front

When is a star born?

Back

nuclear fusion starts

Front

Once a star has ignited and used up all of its hydrogen, what is it called?

Back

Red Giants

Front

When the core of a Red Giant collapses it becomes a: White Dwarf, Supernova, Red Supergiant, Black Hole

Back

White Dwarf

Front

When a massive star begins to cool and expand it is known as a:

Back

Red Supergiant

Front

When the core of a Red Supergiant collapses, a bright event occurs, known as: white dwarf, supernova, big bang, black hole

Back

supernova

Front

After a supernova, the core can collapse into a neutron star, or if massive enough it can become a: Black Hole, White Dwarf, Red Supergiant, Black Dwarf

Back

Black Hole

Front

The combining of two or more atoms in a star's core into a new heavier atom.

Back

Fusion

Front

measures how bright a star would be in relation to the sun if all stars were the same distance from the observer

Back

Luminosity

Front

A diagram or graph that shows the relationship between luminosity and temperature in a star.

Back

HR (Hertzsprung - Russell) Diagram