Red Shift – Expanding Universe

5 a day

• 1. If a star or galaxy is moving away from us, its wavelength will shift which way?• 2. If a star or galaxy is moving

towards us, its wavelength will shift which way?• 3. In 30 words or less, give an

example of the Doppler Effect.

• 1. If a star or galaxy is moving away from us, its wavelength will shift which way?• 2. If a star or galaxy is moving

towards us, its wavelength will shift which way?• 3. In 30 words or less, give an

example of the Doppler Effect.

Towards the red side. RED SHIFT

Towards the blue side. BLUE SHIFT

When a fast object goes by, you can hear it’s pitch get higher as it approaches and get lower when it passes.