The key evidence that the Universe is expanding is ... the red shift of light from...
The key evidence that the Universe is expanding is ...
| the red shift of light from nearby stars. |
| the blue shift of light from distant galaxies. |
| the red shift of light from distant galaxies. |
| the blue shift of light from nearby stars. |
Homework Answers
Ans : the key evidence that the universe is expanding is red shift of light from distant galaxies.
Hence option 3 is correct
Basically Astronomer measure the object movement relative to us with the help of using Doppler shift.
Thanks
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The key evidence that the Universe is expanding
is ...
the red shift of light from...
What key observation led Hubble to conclude that the universe is expanding? a) the distribution of...
What key observation led Hubble to conclude that the universe is expanding? a) the distribution of the galaxies in the universe b) the ratio of hydrogen to helium in a galaxy c) the classification of different types of galaxies d) the redshift of light from distant galaxies
What is the evidence that a large proportion of the mass of the universe is in the form of dark matter? fast In 1933 astronomers noticed that galaxies at the edge of the Coma cluster of galaxies were...
What is the evidence that a large proportion of the mass of the universe is in the form of dark matter? fast In 1933 astronomers noticed that galaxies at the edge of the Coma cluster of galaxies were moving much too the cluster to remain in the cluster, given the amount of mass that was observable in slow not observable observable 10 90 50 This led to the suggestion that some "dark" matter that was the 1970s many observations have...
How and why does the CMBR, redshifts of distant galaxies, and relative abundances of the elements support a beginning to our universe? About 380,000 years after the big bang, the universe became trans...
How and why does the CMBR, redshifts of distant galaxies, and relative abundances of the elements support a beginning to our universe? About 380,000 years after the big bang, the universe became transparent to light. What had to occur for this to happen and what remnant is left behind that we can see today? Go to Planck and The Cosmic Microwave Background and answer the following: How accurate is the the Planck data? What do the different colors help us...
In very rough numbers, galaxies have a mass of 10 billion solar masses (Mo), there are 100 billion galaxies in the Universe, and the Universe is 13 billion light-years in radius. From such estimates,...
In very rough numbers, galaxies have a mass of 10 billion solar masses (Mo), there are 100 billion galaxies in the Universe, and the Universe is 13 billion light-years in radius. From such estimates, calculate how many protons there are in the Universe, how many electrons, and how many neutrons.
how do u measure the cosmological red shift? 4. You observe a distant cluster and determine...
how do u measure the cosmological red shift?
4. You observe a distant cluster and determine that it is 400 Mpc away. a. What cosmological redshift would you measure for a member of this cluster? b. How large was the Universe, relative to its present size, when the light we observe now was emitted?
Astronomers use emission wavelengths (or frequencies) to determine the relative velocities of nearby stars and galaxies....
Astronomers use emission wavelengths (or frequencies) to determine the relative velocities of nearby stars and galaxies. One of the wavelengths commonly measured by astronomers is the H2 emission wavelength. The H2 emission wavelength is 21 cm. A. Determine the frequency of the H2 emission wavelength. B. Determine the relative velocity of the nebula emitting the H2 wavelengths and the observers on Earth (ignore any relativistic effects). The measured frequency on Earth is 40 GHz. C. Would the change in frequency...
Galactic Astrophysics: We observe a fractional shift in the spectral lines from a distant elliptical galaxy...
Galactic Astrophysics:
We observe a fractional shift in the spectral lines from a distant
elliptical galaxy such that the ratio of observed and emitted
wavelengths:
How much smaller was the Universe when the light was emitted by the
elliptical galaxy?
Part B 1L. 4 1.0-kg rock is dropped from a height of 9.0 m. At what height is the rock's kinetie twice its potential energy? a) 2.0 m b) 3.0 m c)6.0 m d 9.0 m e) 18 m 2. Galactic red shift of the...
Part B 1L. 4 1.0-kg rock is dropped from a height of 9.0 m. At what height is the rock's kinetie twice its potential energy? a) 2.0 m b) 3.0 m c)6.0 m d 9.0 m e) 18 m 2. Galactic red shift of the Spectrum of Hydrogen is an indication of: a) shrinking universe, b) supernova event, c) neutron star formation, d) expanding universe. 3. The reddish skies during a "Sunset" can be explained by the wave effect a)...
Most of the galaxies in the universe are observed to be moving away from Earth. Suppose...
Most of the galaxies in the universe are observed to be moving away from Earth. Suppose a particular galaxy emits orange light with a frequency of 5.000×1014Hz. If the galaxy is receding from Earth with a speed of 4875 km/s, what is the frequency of the light when it reaches Earth?
1. Doppler shifts have been used to determine the rate of expansion of the universe. a) Given that a distant star is receding at a speed approximately 8% of the speed of light, determine the shif...
1. Doppler shifts have been used to determine the rate of expansion of the universe. a) Given that a distant star is receding at a speed approximately 8% of the speed of light, determine the shift in the observed wavelength for a particular spectral line of 3 ps* that normally has a wavelength of 326 nm b) The FWHM of the spectral line mentioned in the previous problem is 53.8 pm. What is the surface temperature of the star?
1....
What is the evidence that a large proportion of the mass of the universe is in the form of dark matter? fast In 1933 astronomers noticed that galaxies at the edge of the Coma cluster of galaxies were moving much too the cluster to remain in the cluster, given the amount of mass that was observable in slow not observable observable 10 90 50 This led to the suggestion that some "dark" matter that was the 1970s many observations have...
how do u measure the cosmological red shift?
4. You observe a distant cluster and determine that it is 400 Mpc away. a. What cosmological redshift would you measure for a member of this cluster? b. How large was the Universe, relative to its present size, when the light we observe now was emitted?
Galactic Astrophysics:
We observe a fractional shift in the spectral lines from a distant
elliptical galaxy such that the ratio of observed and emitted
wavelengths:
How much smaller was the Universe when the light was emitted by the
elliptical galaxy?
Part B 1L. 4 1.0-kg rock is dropped from a height of 9.0 m. At what height is the rock's kinetie twice its potential energy? a) 2.0 m b) 3.0 m c)6.0 m d 9.0 m e) 18 m 2. Galactic red shift of the Spectrum of Hydrogen is an indication of: a) shrinking universe, b) supernova event, c) neutron star formation, d) expanding universe. 3. The reddish skies during a "Sunset" can be explained by the wave effect a)...
1. Doppler shifts have been used to determine the rate of expansion of the universe. a) Given that a distant star is receding at a speed approximately 8% of the speed of light, determine the shift in the observed wavelength for a particular spectral line of 3 ps* that normally has a wavelength of 326 nm b) The FWHM of the spectral line mentioned in the previous problem is 53.8 pm. What is the surface temperature of the star?
1....
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