CH 30 REview

What color are the coolest stars?

• orange

• blue

• white

• red

Stars appear to move in the sky because

• the sky is rotating

• Earth is moving.

• the universe is expanding.

• galaxies are forming.

Tags

NGSS.MS-ESS1-2

A star that is moving away from Earth has a spectrum that is

• losing its color.

• shifted toward blue.

• shifted toward red.

• unchanged.

Tags

NGSS.HS-PS4-3

A small, hot, extremely dense core left after a star collapses is a

• red giant.

• red dwarf.

• black dwarf.

• white dwarf.

During the main sequence stage, how is energy generated in a star’s core?

• Hydrogen fuses into helium.

• Carbon fuses into hydrogen.

• Helium fuses into hydrogen.

• Carbon fuses into oxygen.

Tags

NGSS.HS-ESS1-1

How long would a star with the sun’s mass stay on the main sequence?

• a million years

• a billion years

• 10 trillion years

• 10 billion years

Tags

NGSS.HS-ESS1-1

A large, bright star whose hot core has used most of its hydrogen is a

• nova.

• supernova.

• giant.

• pulsar.

Tags

NGSS.HS-ESS1-3

What type of galaxy is the Milky Way?

• elliptical

• spherical

• irregular

• spiral

Tags

NGSS.MS-ESS1-2

What is a quasar?

• quasi-stellar radio source

• quad-stellar radiation source

• quasi-super reality source

• quasi-sterile rally source

What is a light-year?

• the distance light travels in a year

• the speed of light in a year

• the time it takes to travel to a star

• the distance to the sun