Exploring Galaxies and Stars Quiz

Which of the following is a characteristic of spiral galaxies?

• They have a spherical shape with no distinct features.

• They have a flat, rotating disk with spiral arms.

• They are irregular in shape with no defined structure.

• They are composed mostly of older stars and have little gas or dust.

What is the primary factor that determines the life cycle of a star?

• The star's color

• The star's temperature

• The star's mass

• The star's distance from Earth

Explain how the cosmic background radiation supports the Big Bang Theory.

• It shows that the universe is expanding.

• It provides evidence of the universe's initial explosion.

• It indicates the presence of dark matter.

• It suggests that galaxies are moving away from each other.

Tags

NGSS.HS-ESS1-2

Which of the following best describes the Milky Way galaxy?

• An elliptical galaxy with a dense core

• A spiral galaxy with a central bulge and spiral arms

• An irregular galaxy with no defined shape

• A barred spiral galaxy with a bar-shaped core

Describe the process that occurs during the main sequence phase of a star's life cycle.

• The star expands and cools to become a red giant.

• The star undergoes nuclear fusion, converting hydrogen into helium.

• The star collapses into a white dwarf.

• The star explodes in a supernova.

Tags

NGSS.HS-ESS1-1

Which type of galaxy is most likely to have active star formation?

• Elliptical galaxies

• Spiral galaxies

• Irregular galaxies

• Lenticular galaxies

How does the Hertzsprung-Russell diagram help in classifying stars?

• It shows the distance of stars from Earth.

• It plots stars based on their brightness and temperature.

• It categorizes stars by their age and size.

• It measures the gravitational pull of stars.

Analyze the role of dark matter in the formation of galactic structures.

• Dark matter provides the light necessary for star formation.

• Dark matter exerts gravitational forces that help bind galaxies together.

• Dark matter is responsible for the chemical composition of galaxies.

• Dark matter prevents galaxies from colliding with each other.

Tags

NGSS.HS-PS2-4

What evidence supports the theory that the universe is expanding?

• The presence of black holes

• The redshift of light from distant galaxies

• The existence of neutron stars

• The abundance of hydrogen in the universe

Tags

NGSS.HS-PS4-3

Evaluate the significance of cosmic background radiation in understanding the early universe.

• It helps determine the age of the universe.

• It provides a snapshot of the universe shortly after the Big Bang.

• It reveals the chemical composition of early stars.

• It indicates the presence of life in the universe.

Tags

NGSS.HS-ESS1-2