Origin of the Universe Review

A spectrograph separates incoming light by its wavelength. Hubble used this instrument to conclude that some galaxies are moving away over time. Which term best describes this phenomenon?

• Blueshift

• Redshift

• The Doppler effect

• Color Shift

Tags

NGSS.HS-ESS1-2

Mark was on his way to school when he noticed from the car’s rear view mirror that an ambulance was approaching from behind, sounding a loud siren. Mark remembered what he learned about the Doppler effect in science class. Which of the following best describes what Mark would hear, according to the Doppler effect?

• As the ambulance got closer, the siren’s pitch got very low and when it passed Mark’s car, the siren’s pitch got louder.

• As the ambulance got closer, the siren sounded high-pitched and when it passed Mark’s car, the siren sounded high-pitched.

• As the ambulance got closer, the siren’s pitch got lower and when it passed Mark’s car, the siren's pitch got lower.

• As the ambulance got closer, the siren sounded high-pitched and when it passed Mark’s car, the siren’s pitch got lower.

Tags

NGSS.HS-PS4-1

Look at the image. Which is represented by the image shown?

• Nuclear forces

• CMB radiation

• Solar radiation

• Electromagnetic radiation

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-3

Explain the two major scientific discoveries that provide support for the Big Bang Theory.

Evaluate responses using AI:

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NGSS.HS-ESS1-2

The Doppler effect describes the changes in frequency of any kind of sound or light wave produced by a moving source with respect to an observer. Look at the image of a moving car. As the car moves toward person B the observer is experiencing ________, and as the car moves away from person A the observer is experiencing ______. Which terms, in order of appearance, best complete the sentence?

• redshift; blueshift

• redshift; redshift

• blueshift; redshift

• blueshift; blueshift

Tags

NGSS.HS-PS4-1

Use the image to identify the motion of the object relative to Earth.  Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.

• It is not moving
• It is moving away from Earth (Redshift)
• It is moving towards Earth (Blueshift)
• It is moving towards Earth (Redshift)

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What does the 'Doppler Effect' demonstrate in the context of astronomy?

• The change in frequency of light as objects in space move closer or further away

• The rotation speed of planets in our solar system

• The temperature variations of stars

• The gravitational pull between galaxies

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

What is the significance of blueshift in understanding the universe?

• It shows that galaxies are moving towards us.

• It suggests that galaxies are moving away from us.

• It has no significance in astronomy.

• It indicates the universe is contracting.

Tags

NGSS.HS-ESS1-2

How does the Doppler effect relate to the color of light from stars?

• It causes stars to appear redder as they move away.

• It causes stars to appear bluer as they move away.

• It has no effect on the color of light from stars.

• It causes stars to appear green as they move away.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What is the motion of the observed star?

• Moving toward Earth

• Moving away from Earth

• Orbiting around Earth

• Not moving at all

Tags

NGSS.HS-ESS1-2