Hubble discovered that more distant galaxies have greater redshift (greater recession velocity).Group of answer choicesTrueFalse

According to Hubble's Law, the greater a galaxy's redshift, theGroup of answer choicescloser it is to us.faster it's approaching us.younger it is.farther it is from us.greater its mass.

What does Hubble's Law tell us about the Universe?Group of answer choicesIt's expandingIt's contractingIt is staying the same sizeWe don't know

Hubble discovered that ... *1 pointGalaxies are all moving away from us at the same speedGalaxies that are closer to us are moving towards usGalaxies that are closer to us are moving away from us fasterGalaxies that are closer to us are moving away from us slower than those farther from us

How did Hubble know that the galaxies he observed were moving away from us? aThe spectra of the stars were red-shifted which indicates they were moving away rapidly. bThe spectra of the stars were blue-shifted which indicates they were moving away rapidly. cThe spectra of the stars were violet-shifted which indicates they were moving away rapidly. dThe spectra of the stars were green-shifted which indicates they were moving away rapidly.

Why does redshift occur?5 pointsThe wavelength of light increasesThe wavelength of light decreasesThe celestial objects are moving fasterThe celestial objects are moving slower