Redshift/Blueshift

Redshift/Blueshift

Multiple Choice

As the source approaches the observer..

• The wave frequency is lower, light shifts red.

• The wave frequency is lower, light shifts blue.

• The wave frequency is higher, light shifts red.

• The wave frequency is higher, light shifts blue.

Multiple Choice

As the source moves away from the observer..

• The wave frequency is lower, light shifts red.

• The wave frequency is lower, light shifts blue.

• The wave frequency is higher, light shifts red.

• The wave frequency is higher, light shifts blue.

Multiple Choice

As the observer approaches the source...

• The wave frequency is lower, light shifts red.

• The wave frequency is lower, light shifts blue.

• The wave frequency is higher, light shifts red.

• The wave frequency is higher, light shifts blue.

Multiple Choice

As the observer moves away from the source...

• The wave frequency is lower, light shifts red.

• The wave frequency is lower, light shifts blue.

• The wave frequency is higher, light shifts red.

• The wave frequency is higher, light shifts blue.

Open Ended

Predict: Is our universe expanding, contracting, or staying static?

Open Ended

The universe is expanding (everything is moving apart): How would the light from a star source change? Write your predictions below

Open Ended

The universe is contracting (everything moving closer together): How would the light from a star source change? Write your predictions below

Open Ended

The universe is static (not moving): How would the light from a star source change? Write your predictions below

Open Ended

Universe: Expanding, Contracting, or Static? How do you know?