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WorksheetsRed Shift and Spectral Lines
Total questions: 27
Worksheet time: 23mins
What is the doppler effect?
a change in the frequency of sound, light or other waves to cause a change in pitch
A change in pitch that causes frequency, sound, light and other waves to disappear
I have no idea
A change in sound that alters frequency
the doppler effect causes a shift in...
pitch
wavelength
frequency
All of the above
when a noise if moving away from an observer...
the pitch is lower
the pitch is higher
the noise is smoother
the energy is lower
when the frequency is higher what happens to the wavelength?
the wavelength gets longer
The wavelength gets shorter
the wavelength doesn't change
I have no idea
What is Redshift
Objects move away us, give off red light
Objects move towards us, give off blue light
Objects move towards us, give off red light
Objects move away us, give off blue light
Blueshift frequency
Is increasing
Stays the same
Blueshift has no frequency
decreases
Redshift wavelength
doesn't change
stays the same
Gets longer/increases
gets shorter/decreases
Is Galaxy A moving
Away
Towards
Stationary
Based on the picture above, which kind of wave has the smallest frequency?
microwave
ultraviolet
infrared
gamma rays
Based on the picture above, which kind of wave has the greatest frequency?
microwave
ultraviolet
infrared
gamma rays
Based on the picture above, which has the longest wavelength?
infrared
x-ray
microwave
ultraviolet
Based on the picture above, which has the shortest wavelength?
visible
radio
microwave
gamma rays
The top spectra is the laboratory spectra and is not moving. What type of shift is shown with the bottom spectra and is the object moving towards or away from the observer?
Red Shift
Towards
Red Shift
Away
Blue Shift
Towards
Blue Shift
Away
The top spectra is the laboratory spectra and is not moving. What type of shift is shown with the bottom spectra and is the object moving towards or away from the observer?
Red Shift
Towards
Red Shift
Away
Blue Shift
Towards
Blue Shift
Away
Use the image to identify the motion of the object relative to Earth. Compare the absorption spectra of the star (top row) to what the star would look like if it were not moving at all relative to Earth (bottom row).
It is not moving
It is moving away from Earth (Redshift)
It is moving towards Earth (Blueshift)
It is moving towards Earth (Redshift)
Which element(s) is/are found in the star's spectra below?
Hydrogen only
Hydrogen & Helium
Calcium only
Hydrogen & Calcium
Based on these spectra, which Galaxy is moving at the fastest speed away from the Milky Way?
Galaxy B
Galaxy C
Galaxy D
Which colour has the smallest frequency?
Red
Green
Blue
Purple
Fill in the blank: The red-shift of galaxies provides evidence for the universe's ______.
contraction
stagnation
rotation
expansion
