Stars and Galaxies

Coolest colored stars?

• Orange

• Blue

• Red

• White

Why do stars appear to be moving in the sky?

• the sky is moving

• the universe is expanding

• Earth is rotating (moving)

• the moon causes this

A star moving away from the earth has ___________ shift.

• Red

• Blue

• Orange

• No

Tags

NGSS.HS-ESS1-2

About how many stars can we see without a telescope?

• A Billion

• A Million

• 100

• 6,000

Scientists determine the composition and temperature of stars how?

• Sampling surface material

• analyzing vibrations

• magnetic testing

• analyzing the star's spectra

Tags

NGSS.HS-ESS1-2

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

• red giant

• white dwarf

• black dwarf

• pulsar

How is energy generated during main sequence?

• Hydrogen fuses into helium

• Helium fuses into hydrogen

• Helium fuses into lithium

• Hydrogen fuses into oxygen

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Once 10,000,000 degrees C is reached, a protostar becomes a star and

• nuclear fusion ends

• nuclear fusion begins

• nuclear fission ends

• nuclear fission begins

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

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

• nova

• giant

• supernova

• pulsar

Tags

NGSS.HS-ESS1-3

What are binary stars?

• pairs of stars that are motionless

• stars like our sun

• pairs of revolving stars held together by gravity

• stars with 2 poles