3128195
Descripción
Test por m.h.weber01, actualizado hace más de 1 año
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Creado por m.h.weber01
hace casi 9 años
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Pregunta 1
Pregunta
What does CMBR stand for?
Respuesta
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Cosmic microwave background radiation
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Cosmological microwave background radiation
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Cosmic microwave background radiography
Pregunta 2
Pregunta
What are the three main pieces of evidence for the Big Bang Theory?
Respuesta
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We can still hear the explosion with special equipment
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We can detect radiation left over from the big bang (CMBR)
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We can tell that all distant galaxies are moving away from us because they are red-shifted
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We can tell that all distant galaxies are moving closer to us because they are red-shifted
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Very distant galaxies move faster away from us than closer ones
Pregunta 3
Pregunta
The light from distant galaxies appears more blue than it should because the waves emitted have a shorter wavelength due to the doppler effect
Respuesta
- True
- False
Pregunta 4
Pregunta
How old is the universe estimated to be?
Respuesta
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13.7 thousand years old
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13.7 million years old
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13.7 billion years old
Pregunta 5
Pregunta
The further away a galaxy is from us, the faster it is moving away from us
Respuesta
- True
- False
Pregunta 6
Pregunta
According to the Doppler effect, what happens to sound waves emitted at a constant pitch from a car moving towards you?
Respuesta
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They move more quickly, so their pitch increases
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Their wavelength increases, so their pitch increases
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Their frequency increases, so their pitch increases
Pregunta 7
Pregunta
What piece of evidence is only explained using the Big Bang Theory?
Respuesta
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CMBR
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Red shift
Pregunta 8
Pregunta
What do missing wavelengths/black lines on the spectrum of light wavelengths emitted from a star mean?
Respuesta
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These are the chemical components of dust in space between us and the star absorbing certain light frequencies
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These are the chemical components of the star absorbing certain light frequencies
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These form when there are solar flares which interrupt the emission of light from the star
Pregunta 9
Pregunta
All elements absorb the same wavelength of light
Respuesta
- True
- False
Pregunta 10
Pregunta
The absorption lines on the Spectra of distant galaxies are shifted ______ relative to the sun
Respuesta
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Red
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Blue
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