Astronomy Practice Test

The force that holds the galaxies together is

• Acceleration

• Newton's first law

• gravity

• mystery

The shape of our Milky Way galaxy is

• elliptical

• spiral

• irregular

A meteorite is different from a comet mainly because a meteorite

• has a tail of ice and gas

• is found in orbit between Jupiter and Mars

• enters the Earth's atmosphere and lands

• has a nucleus made of rock and snow

Which list is in order from smallest to largest?

• solar system, Earth, Milky Way galaxy, galaxies, universe

• universe, galaxies, Milky Way galaxy, solar system, Earth

• Earth, solar system, Milky Way galaxy, galaxies, universe

• Earth, galaxies, solar system, Milky Way galaxy, universe

All stars start as gas and dust in a(n)

• nebula
• black hole
• red giant
• black dwarf

After the main sequence, a low mass star becomes a

• black dwarf
• protostar
• red giant
• supergiant

After a supergiant, a high mass star explodes and forms a

• supernova
• red giant
• black hole
• planetary nebula

A high mass star can end as this stage, which is so dense that not even light can escape!

• black dwarf
• white dwarf
• supernova
• black hole

What stage fills in the blank. Nebula --> Main sequence --> red giant --> ______________ --> white dwarf --> black dwaft

• supergiant
• planetary nebula
• black hole
• supernova

Which category of stars are very hot, but not very bright?

• Blue Giants

• Red Giants

• White Dwarfs

• Red Supergiants