The Big Bang Theory 2023 Questions and Answers with
complete solution
What is the Big Band Theory?
A theory that 14 billions years ago all matter and energy in the universe was
compressed into an extremely small volume that exploded and began expanding in all
directions.
What evidence supports the Big Bang Theory?
1. Hubble found that the spectra of galaxies were shifted towards the red end of the
spectra indicating that the universe is still expanding. RED SHIFT
3. Cosmic background radiation is uniformly detected from every direction. Scientist
believe it is a remnent of the big bang. The temperature of this radiation is -270 degrees
F only 3 degrees F above absolute zero, the coldest temperature possible. This
indicates that the universe was initially hot and has cool down the past 14 billions years.
What is Dark Matter and Dark Energy?
Dark Matter doesn't give off light. We can detect it by its gravity. We don't know about
Dark Engery...yet! The planets, stars, and the matter between starts account for only
4% of the universe. The other 96% is made up of Dark Matter and Dark Energy.
Where did all of the matter and energy we see today come from?
The Big Bang
What happens to the wavelength of light as you go from blue to red?
The wavelength increases.
Most all the galaxies in the universe have been found to have a deep red shift in
the light that reaches the earth. What does that tell us about the direction that
these galaxies are moving.
The galaxies are moving away from the earth.
cosmology?
the study of the origin, structure, and future of the universe
many current theories of the universe began with observations made ______
years ago
less than 100
What did Hubble discover near the end of the 1920s?
He found the spectra of the galaxies, except for the few closet to earth, were shifted
towards the red end of the spectrum
What did Hubble find out about the most distant galaxies?
The most distant galaxies were moving away from Earth and showed the most red shift.
What do the spectra of distant galaxies collected today say about Hubble's
original findings?
the images collected today confirm Hubble's original findings
In terms of expansion, what is true of the universe today?
The universe is expanding and galaxies are moving away from each other
What is CMB (cosmic background radiation)?
low level of energy evenly distributed throughout the universe
When do astronomers think CMB formed?
They think CMB formed after the big bang
complete solution
What is the Big Band Theory?
A theory that 14 billions years ago all matter and energy in the universe was
compressed into an extremely small volume that exploded and began expanding in all
directions.
What evidence supports the Big Bang Theory?
1. Hubble found that the spectra of galaxies were shifted towards the red end of the
spectra indicating that the universe is still expanding. RED SHIFT
3. Cosmic background radiation is uniformly detected from every direction. Scientist
believe it is a remnent of the big bang. The temperature of this radiation is -270 degrees
F only 3 degrees F above absolute zero, the coldest temperature possible. This
indicates that the universe was initially hot and has cool down the past 14 billions years.
What is Dark Matter and Dark Energy?
Dark Matter doesn't give off light. We can detect it by its gravity. We don't know about
Dark Engery...yet! The planets, stars, and the matter between starts account for only
4% of the universe. The other 96% is made up of Dark Matter and Dark Energy.
Where did all of the matter and energy we see today come from?
The Big Bang
What happens to the wavelength of light as you go from blue to red?
The wavelength increases.
Most all the galaxies in the universe have been found to have a deep red shift in
the light that reaches the earth. What does that tell us about the direction that
these galaxies are moving.
The galaxies are moving away from the earth.
cosmology?
the study of the origin, structure, and future of the universe
many current theories of the universe began with observations made ______
years ago
less than 100
What did Hubble discover near the end of the 1920s?
He found the spectra of the galaxies, except for the few closet to earth, were shifted
towards the red end of the spectrum
What did Hubble find out about the most distant galaxies?
The most distant galaxies were moving away from Earth and showed the most red shift.
What do the spectra of distant galaxies collected today say about Hubble's
original findings?
the images collected today confirm Hubble's original findings
In terms of expansion, what is true of the universe today?
The universe is expanding and galaxies are moving away from each other
What is CMB (cosmic background radiation)?
low level of energy evenly distributed throughout the universe
When do astronomers think CMB formed?
They think CMB formed after the big bang
