WorksheetsColliding Galaxies (ALL)
Total questions: 26
Worksheet time: 2hrs 10mins
What is Cosmic MIcrowave Background
Microwave radiation from the Big Bang
Visible light from the stars
Gamma radiation from the Big Bang
Matter that has gravity but no light
What do we observe when stars/galaxies are moving away from us?
Cosmic Background Radiation
Blueshift
Nothing
Redshift
What is one major piece of evidence that the Big Bang theory is correct?
astronomers have detected leftover radiation from the Big Bang
everything in the universe has remained the in same location for billions of years
astronomers have detected that the universe is no longer expanding
astronomers have detected that the universe is contracting
The CMB (Cosmic Background Radiation) is:
the remaining energy from the big bang.
incredibly cool.
a cloud of light
only located in certain places in the universe.
Ever since the universe began, the universe has been
expanding
contracting
stays the same size
The pitch of a sound wave relates to the wave's _________________.
Amplitude
Frequency
Wavelength
Period
Look at the picture. Who is experiencing a lower pitched sound?
Observer A
Observer B
There is no difference
The Doppler effect applies to light waves as well as sound waves. Astronomers use this to measure the motion of stars and galaxies. In 1929, Edwin Hubble discovered that light from distant galaxies was shifted away from the blue end of the spectrum and towards the red end of the spectrum. Red light has a longer wavelength (and a lower frequency) than blue light. What could Hubble conclude about these galaxies?
The distant galaxies are growing smaller.
The distant galaxies are moving towards the Earth.
The distant galaxies are moving away from earth
What form of radiation has the lowest energy?
X-Rays
Visible Light
Gamma Rays
Radio Waves
What form of radiation has the greatest frequency?
X-Rays
Visible Light
Gamma Rays
Radio Waves
5. The diagram below shows a standard spectrum compared to a spectrum produced from a distant star. Which conclusion can be made by comparing the standard spectrum produced from this distant star?
a) The star’s spectral lines have shifted toward the ultraviolet end of the spectrum and the star is moving toward Earth.
b) The star’s spectral lines have shifted toward the ultraviolet end of the spectrum and the star is moving away from Earth.
c) The star’s spectral lines have shifted toward the infrared end of the spectrum and the star is moving toward Earth.
d) The star’s spectral lines have shifted toward the infrared end of the spectrum and the star is moving away from Earth.
What happens to the wavelength of light waves emitted from a star as the star moves toward us?
¿Qué sucede con la longitud de onda de las ondas de luz emitidas por una estrella cuando la estrella se mueve hacia nosotros?
wavelength increases
wavelength decreases
Segment B-C The bus is _________________.
at rest
returning (to original position)
moving forward
The picture shows a weightlifter holding the barbell over his head.
The force of gravity pulling down on the barbell is 756 newtons.
How many newtons of force are exerted by the weightlifter to hold the barbell up?
No Newtons
756 Newtons
368 Newtons
14767 Newtons
