Chapter 30: Galaxies & the Universe

Which type of star is a variable star?

• White Dwarf

• RR Lyrea

• Pulsar

• Binary Star

In what part of the Milky Way is the Sun?

• bulge

• globular clusters

• halo

• disc

On which spiral arm or partial arm is Earth located?

• Perseus

• Sagittarius

• Orion spur

• Norma

How are variable stars used in astronomy?

• to determine size

• to determine distance

• to determine speed

• to determine age

Over time galaxies become more:

• spiraled and red

• irregular and blue

• irregular and red

• spiraled and blue

Galaxies that are ______ move ______ the fastest

• farther away, toward us

• closest, away

• farther away, away

• stationary, away

Tags

NGSS.HS-ESS1-2

The value for Hubble's constant is ______ km/s/Mpc

• 7

• 700

• 70

• 7000

Which part of our galaxy is made mostly of older stars that are close together?

• halo

• disc

• bulge

• orion arm

Two evidences supporting the Big Bang Theory are:

• redshifts, and Hubble's constant

• blue shifts, and Hubble's constant

• blue shifts , and cosmic background radiation

• red shifts, and cosmic background radiation

Tags

NGSS.HS-ESS1-2

Which theory describes the creation and expansion of the universe.

• Giant Impact Theory

• Solar Nebula Theory

• Big Bang Theory

• Theory of Plate Tectonic

Tags

NGSS.HS-ESS1-2