The Universe Unit Test 2 of 152 of 15 Items Question Which of the following statements provide evidence to support the big bang theory? Select the two correct answers.(1 point) Responses The ratios of hydrogen and helium in the universe match those of the early universe. The ratios of hydrogen and helium in the universe match those of the early universe. Small spiral galaxies become larger elliptical galaxies when they collide. Small spiral galaxies become larger elliptical galaxies when they collide. The universe began as a very high density singularity. The universe began as a very high density singularity. Dark matter makes up the majority of matter in the galaxy. Dark matter makes up the majority of matter in the galaxy.
The correct answers are:
1. The ratios of hydrogen and helium in the universe match those of the early universe.
3. The universe began as a very high density singularity.
How does the change in the temperature of the universe provide evidence for universe expansion that supports the Big Bang Theory?(1 point) Responses The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates. The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates. The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos disperses. The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos disperses. The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates. The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates. The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The correct answer is:
1. The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates.
Which of these items provide evidence supporting the Big Bang theory? Select the two correct items.(1 point) Responses composition of matter in the universe composition of matter in the universe rate of star formation rate of star formation cosmic background radiation cosmic background radiation sizes and shapes of distant galaxies sizes and shapes of distant galaxies
The correct answers are:
1. Composition of matter in the universe
3. Cosmic background radiation
Which represents a correct match between ideas related to the formation of the universe? Select the two correct answers.(1 point) Responses greatest percent of mass of universe — dark matter greatest percent of mass of universe — dark matter accelerating expansion — dark energy accelerating expansion — dark energy structures forming in the early universe — dark matter structures forming in the early universe — dark matter glowing nebulae — dark energy
The correct answers are:
1. Greatest percent of mass of universe — dark matter
3. Structures forming in the early universe — dark matter
Which statements describe ways that nuclear fission is different than nuclear fusion? Select the two correct answers.(1 point) Responses Nuclear fission is used to produce electricity at nuclear power plants. Nuclear fission is used to produce electricity at nuclear power plants. Nuclear fission involves one large atom splitting into two smaller atoms. Nuclear fission involves one large atom splitting into two smaller atoms. Nuclear fission takes place in the nucleus of an atom. Nuclear fission takes place in the nucleus of an atom. Nuclear fission releases a huge amount of energy.
The correct answers are:
2. Nuclear fission involves one large atom splitting into two smaller atoms.
4. Nuclear fission releases a huge amount of energy.
How is dark energy related to the theory of the Big Bang?(1 point) Responses It causes the universe to expand. It causes the universe to expand. It causes the expansion of the universe to accelerate. It causes the expansion of the universe to accelerate. It seeded the formation of galaxies and star clusters. It seeded the formation of galaxies and star clusters. It causes the spinning of galaxies. It causes the spinning of galaxies.
The correct answer is:
2. It causes the expansion of the universe to accelerate.
Which statements about nuclear fusion are false? Select the two correct answers.(1 point) Responses Nuclear fusion takes place in the cores of stars. Nuclear fusion takes place in the cores of stars. The fuel for nuclear fusion is often uranium. The fuel for nuclear fusion is often uranium. Nuclear fusion is used to generate electricity at nuclear power plants. Nuclear fusion is used to generate electricity at nuclear power plants. Nuclear fusion releases large amounts of energy.
The correct answers are:
2. The fuel for nuclear fusion is often uranium.
3. Nuclear fusion is used to generate electricity at nuclear power plants.
How does weak background radiation coming from every direction in the sky support the Big Bang Theory?(1 point) Responses It provides evidence of the universe's increasing mass. It provides evidence of the universe's increasing mass. It provides evidence of the universe's decreasing mass. It provides evidence of the universe's decreasing mass. It provides evidence of universe expansion. It provides evidence of universe expansion. It provides evidence of universe contraction.
The correct answer is:
- It provides evidence of universe expansion.
Which evidence supports the idea that Cosmic Microwave Background radiation is a remnant of the Big Bang?(1 point) Responses Its mass fluctuates greatly. Its mass fluctuates greatly. Its mass is uniform. Its mass is uniform. Its temperature is uniform. Its temperature is uniform. Its temperature fluctuates greatly.
The correct answer is:
- Its temperature is uniform.
Blueshift is observed when(1 point) Responses a luminous object is stationary compared to an observer. a luminous object is stationary compared to an observer. a distant luminous object travels rapidly towards an observer. a distant luminous object travels rapidly towards an observer. a distant luminous object travels rapidly away from an observer. a distant luminous object travels rapidly away from an observer. a luminous object travels alongside an observer. a luminous object travels alongside an observer.
The correct answer is:
- A distant luminous object travels rapidly towards an observer.