Spectra Concept Review

What has happened to the light from the supercluster BAS11 in comparison to the sun?

• The spectrum from the supercluster is red shifted

• The spectrum from the supercluster is blue shifted

• The spectrum from the sun is blue shifted

• The spectrum from the sun is red shifted

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-3

How would an astronomer explain the difference between the two spectrums?

• Hydrogen gives off light differently if the supercluster is larger

• Light traveling through space is warped by a black hole

• The supercluster is traveling away from us lengthening the light waves

• The stars in the supercluster is fusing a slightly different kind of Hydrogen than the sun

Tags

NGSS.HS-ESS1-2

According to Hubble's Law (V=HD) which stars have the greatest red shift

• Stars in the nearest galaxy that are spinning

• Stars nearest the sun where light is more plentiful

• stars farthest from Earth with the greatest speed

• Stars closest to Earth where we can see them better

Tags

NGSS.HS-ESS1-2

Why is the light from this star red shifted. Check all correct answers.

• The source of the light is moving away from the observer

• The actual color of the light changed to red

• The wavelength of the light has been stretched out

• The wavelength of the light has been squished together

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

Atoms emit light when...

• electrons lose energy and emit spectra

• electrons lose their charge and become neutrons

• electrons gain energy and absorb spectra

• electrons reverse their charge and become positrons

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Glowing gases, like that of a hot star, are losing energy aka light in specific frequencies. The resulting spectrum has bright lines against a dark background and is called a

• emission spectrum

• absorption spectrum

• continuous spectrum

Tags

NGSS.HS-ESS1-2

5. The diagram below shows a standard spectrum compared to a spectrum produced from a distant star. Which conclusion can be made by comparing the standard spectrum produced from this distant star?

• a) The star’s spectral lines have shifted toward the ultraviolet end of the spectrum and the star is moving toward Earth.

• b) The star’s spectral lines have shifted toward the ultraviolet end of the spectrum and the star is moving away from Earth.

• c) The star’s spectral lines have shifted toward the infrared end of the spectrum and the star is moving toward Earth.

• d) The star’s spectral lines have shifted toward the infrared end of the spectrum and the star is moving away from Earth.

Tags

NGSS.HS-ESS1-2

By studying spectra we have been able to determine what? (pick all correct answers)

• What the universe is made of.

• That the universe is expanding

• That our universe is inside a black hole

• The CMB throughout the universe

Tags

NGSS.HS-ESS1-2

100 Inch telescope, photographed spectra of many galaxies, everything redshifted, universe is expanding, the further away a galaxy is the faster its going... which scientists are associated with these.

• Penzias and Wilson

• Hubble and Humason

• Sagan and Regan

• Kirk and Spock

Tags

NGSS.HS-ESS1-2

Cosmic microwave background (CMB), Universe is 2.7 Kelvin, Discovered explosive shockwave from the big bang... which scientists are associated with these.

• Penzias and Wilson

• Hubble and Humason

• Sagan and Regan

• Kirk and Spock

Tags

NGSS.HS-ESS1-2