The Origin of the Universe

Question 1

What is Red-Shift?

Answer 1

When we look at light from distant galaxies we can see the same patterns but at slightly lower frequencies than they should be - they’re shifted towards the red end of the spectrum

Question 2

Red-Shift

Different chemical elements…

Answer 2

…absorb different frequencies of light

Question 3

Red-Shift

Each element produces a specific pattern of dark lines at

Answer 3

the frequencies that it absorbs in the visible spectru

Question 4

What is the Doppler effect?

Answer 4

When something that emits waves moves towards or away from you the wavelength and frequencies seem different compared to when the source of the waves is stationary

Question 5

Doppler effect

The frequency of a source moving towards you will…

Answer 5

seem higher and its wavelength will seem longer

Question 6

Doppler effect

The frequency of a source moving away from you will…

Answer 6

seem lower and its wavelength will seem longer

Question 7

The Doppler effect happens to..

Answer 7

longitudinal waves and transverse