Big Bang & Stellar Evolution Review

Which observation provides direct evidence that the universe is expanding?

• The presence of heavy elements like gold on Earth

• The distribution of stars on the H–R diagram

• The redshift of light from distant galaxies

• The changing phases of the Moon

Tags

NGSS.HS-ESS1-2

The Cosmic Microwave Background (CMB) radiation supports the Big Bang Theory because it shows that:

• Stars fuse hydrogen into helium in their cores

• The early universe was hot and dense, leaving behind faint radiation

• Galaxies are evenly distributed in clusters

• The Earth is located near the center of the universe

Tags

NGSS.HS-ESS1-2

According to Hubble’s Law, galaxies that are farther away from Earth:

• Move away more slowly

• Move away more quickly

• Remain at a constant velocity

• Move toward the Milky Way

Tags

NGSS.HS-ESS1-2

Which tool do astronomers use to measure the redshift of distant galaxies?

• Telescope mirror

• Spectrometer

• Compass

• Seismograph

Tags

NGSS.HS-ESS1-2

Radio telescopes are important for detecting what evidence for the Big Bang:

• Ultraviolet radiation from stars

• Cosmic Microwave Background radiation

• Infrared light from comets

• Visible light from the Moon

Tags

NGSS.HS-ESS1-2

The Big Bang Theory is supported by which combination of evidence?

• Fossil record and seafloor spreading

• Redshift, CMB radiation, and Hubble’s Law

• Star clusters and asteroid impacts

• Plate tectonics and mountain building

Tags

NGSS.HS-ESS1-2

A star’s color is directly related to its:

• Age

• Surface temperature

• Distance from Earth

• Mass only

On the H–R diagram, main sequence stars show that:

• Most stars are currently in the main sequence

• Blue stars are cool, red stars are hot

• White dwarfs are cooler than red giants

• All stars remain in one position permanently

Tags

NGSS.HS-ESS1-3

Which type of star has the shortest lifespan?

• Small red dwarf

• Blue supergiant

• Medium-mass yellow star like the Sun

• Main Sequence

Tags

NGSS.HS-ESS1-1

What happens when a star like the Sun runs out of hydrogen fuel in its core?

• It collapses directly into a black hole

• It expands into a red giant

• It explodes as a supernova

• It becomes a neutron star

Tags

NGSS.HS-ESS1-1