Question

11)the diagram below represents the spectral lines from the light of an element in a laboratory on earth. which diagram below best represents the pattern of spectral lines from the same element when it was observed by edwin hubble in the light of one of the distant galaxies? (1) diagram 1 (2) diagram 2 (3) diagram 3 (4) diagram 4 12) which of the following visible light colors measures as the longest wavelength? (1) blue (2) yellow (3) orange (4) green 13) the approximate age of the universe is estimated to be 14) the red shift of light from distant galaxies provides evidence that these galaxies (1) decreasing in size (2) decreasing in distance from earth (3) increasing in distance from earth (4) increasing in size 15) the milky way can best be described as (1) a collection of stars orbiting the sun (2) a star that originated 4600 million years ago (3) an elliptical galaxy (4) one of billions of galaxies in the universe 16) what color of visible light in the spectrum has a wavelength of 5.2 x 10² nm? (1) red (2) blue (3) violet (4) green 17) compared to our solar system, the universe is (1) older, larger, and contains more stars (2) younger, smaller, and contains fewer stars (3) older, smaller, and contains fewer stars (4) younger, larger, and contains more stars

Explanation:

1. Edwin Hubble observed red - shift in the spectral lines of distant galaxies. Red - shift means the spectral lines shift towards the red end. So the correct diagram is one where the lines are shifted towards the red side compared to the Earth - based spectrum.
2. Among visible light colors, red has the longest wavelength. But among the given options, orange has a longer wavelength than blue, yellow and green.
3. The approximate age of the universe is estimated to be about 13.8 billion years.
4. Red - shift of light from distant galaxies is evidence that these galaxies are moving away from Earth, i.e., increasing in distance from Earth.
5. The Milky Way is one of billions of galaxies in the universe. It is a spiral galaxy, not an elliptical one, and it is not a single star and the stars in it do not orbit the Sun.
6. A wavelength of 5.2 x 10² nm (520 nm) corresponds to green light.
7. The universe is older, larger, and contains more stars compared to our solar system.

Answer:

1. (2)
2. (3)
3. No options given for this question in the provided format, but the answer is about 13.8 billion years.
4. (3)
5. (4)
6. (4)
7. (1)