Formation and Motion of Galaxies

What force pulled huge pockets of gas together to form stars?

• rotational force

• centripetal force

• gravity

Tags

NGSS.HS-PS2-4

Gravity is responsible for which of the following characteristics of a galaxy?

• The motion of the objects within it

• The size of its largest stars

• Its location within the universe

• The color of light it emits

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-1

NGSS.HS-PS2-4

The dust and gas were drawn together by ___________.

• friction

• swirling winds

• light

• gravity

Tags

NGSS.HS-PS2-4

What is the primary force responsible for the formation of galaxies?

• Electromagnetic force

• Nuclear force

• Gravity

• Weak force

Tags

NGSS.HS-PS2-4

Which of the following best describes the motion of stars within a galaxy?

• Random and chaotic

• Circular and orderly

• Linear and predictable

• Erratic and unpredictable

What is the role of dark matter in the formation of galaxies?

• It provides the light needed for star formation

• It exerts gravitational forces that help bind galaxies together

• It repels normal matter, preventing galaxy formation

• It has no significant role in galaxy formation

Tags

NGSS.HS-PS2-4

Which type of galaxy is characterized by a flat, rotating disk of stars and nebulae?

• Elliptical galaxy

• Irregular galaxy

• Spiral galaxy

• Lenticular galaxy

Tags

NGSS.MS-ESS1-2

What is the significance of the Hubble Law in understanding galaxies?

• It describes the chemical composition of galaxies

• It explains the rotational speed of galaxies

• It shows the relationship between a galaxy's distance and its speed

• It predicts the future collision of galaxies

Which of the following is a method used to measure the distance to galaxies?

• Parallax

• Redshift

• Spectroscopy

• Triangulation

Tags

NGSS.HS-PS4-3

What phenomenon explains the redshift observed in distant galaxies?

• The Doppler effect

• Gravitational lensing

• Cosmic microwave background radiation

• Dark energy

Tags

NGSS.HS-ESS1-2