WorksheetsDiscovery of the big bang
Total questions: 10
Worksheet time: 3mins
Redshift refers to :
Light appearing brighter from distant objects.
Light being absorbed by dust in space.
The stretching of a light wave's wavelength as it travels.
A new color added to light from distant galaxies.
According to the Doppler effect, redshift of light from a celestial object indicates :
The object is composed mostly of red elements.
The object is not moving relative to Earth.
The object is moving towards Earth.
The object is moving away from Earth.
The observation of a red shift in the light from most distant galaxies is evidence for :
The universe being static and unchanging.
The Milky Way galaxy being at the center of the universe.
The universe undergoing a continuous cycle of expansion and contraction.
The universe expanding over time (supported by the Big Bang theory).
The amount of redshift observed can be used to determine:
The object's distance from Earth.
The object's temperature.
The object's composition.
The object's size.
Redshift is the opposite of:
Infrared light.
Blueshift.
Ultraviolet light.
Cosmic microwave background radiation.
Which of the following statements about redshift is NOT true :
Redshift affects all types of electromagnetic waves, not just visible light
A larger redshift indicates a faster relative velocity away from Earth.
Redshift can only be caused by the Doppler effect.
Studying the redshift help us understand the structure of the universe
If a distant galaxy exhibits no redshift, what can we suppose about its motion relative to Earth?
It must be composed of mostly red-colored objects.
It is definitely moving towards Earth at high speed.
It is either stationary or moving away from Earth at a very slow speed
It is too far away to determine its motion with certainty.
Technology has allowed astronomers to measure redshift with high precision. This is important because it helps us :
Predict future events in the universe.
Directly measure the age of distant galaxies.
Calculate the exact composition of stars in those galaxies.
Confirm and refine our understanding of the universe's expansion.
If Galaxy A exhibits a greater redshift than galaxy B. What can we conclude ?
Galaxy B is older than galaxy A.
Galaxy A is definitely larger in size than galaxy B.
Galaxy A is moving away from Earth at a faster speed than galaxy B.
Earth is definitively closer to galaxy A than to galaxy B.
The concept of redshift is crucial in the field of :
Planetary geology
Weather forecasting
Cosmology
Agricultural science
