Science Review (8th Grade)

A star is born when:

• nuclear fusion starts

• a nebula becomes a protostar

• gases in a nebula condense

• hydrogen is used up in fusion processes

When the core of a Red Giant collapses it becomes a:

• White Dwarf

• Supernova

• Red Supergiant

• Black Hole

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

• Black Dwarf

• Red Giant

• Red Supergiant

• White Dwarf

When the core of a Red Supergiant collapses, a bright event occurs, known as:

• white dwarf

• supernova

• big bang

• black hole

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

When a Red Giant's outer atmosphere drifts away it is now known as:

• planetary cloud

• White dwarf cloud

• planetary nebula

• expanding nebula

A black hole is black because:

• there is nothing in it

• it is too small to see

• it is inherently evil

• even light cannot escape its gravity

Our sun is currently in what star stage?

• Protostar

• Nebula

• Main Sequence

• Red Giant

Main sequence stars are made primarily of which elements?

• Hydrogen only

• Helium and Carbon

• Carbon and Iron

• Hydrogen and Helium

What is a celestial body that is composed of gas and emits light from nuclear fusion reactions?

• Nebula

• Star

• Galaxy

• Planet