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Stars appear to move in the sky because

• The Earth is rotating on its axis

• The universe is expanding

• The night sky is rotating

• New galaxies are formed

Which constellation is best known because it contains the Big Dipper which looks like a ladle?

• Ursa Major

• Orion

• Ursa Minor

• Polaris

A constellation is a group of visible _____ that form a pattern when viewed from the Earth.

• Planets

• Creatures

• Stars

• Clouds

What are group of stars in the sky that form an imaginary picture?

• Galaxy

• Constellation

• Moon

• Solar System

What element is the fuel for main sequence stars?

• Carbon

• Helium

• Oxygen

• Hydrogen

The luminosity of a star describes its ______________.

• brightness

• temperature

• age

• color

What color are the coolest stars?

• red

• blue

• white

• orange

What color are the hottest stars?

• blue

• red

• white

• yellow

What are stars composed largely of?

• Metal

• Water

• Rock

• Gas and plasma

What is the fate of a red giant or red supergiant star?

• Become a neutron star

• Remain as a white dwarf

• Collapse and explode

• Turn into a black hole