Sure! Here are the responses for each question based on the provided context:
Question 1 Responses:
- When a vibrating object is moving towards an observer, the measured frequency of the vibrations will be higher than if the object and observer are both stationary.
- When a star is moving towards an observer on Earth, the light spectrum of the star will appear blue compared to the light spectrum of the sun.
Question 2 Responses:
- Blueshift is observed when a distant luminous object travels rapidly towards an observer.
Question 3 Responses (False Statements):
- The fuel for nuclear fusion is often uranium.
- Nuclear fusion is used to generate electricity at nuclear power plants.
Question 4 Responses (Differences):
- Nuclear fission is used to produce electricity at nuclear power plants.
- Nuclear fission involves one large atom splitting into two smaller atoms.
Question 5 Response:
- As evidence supporting the Big Bang Theory, the redshift of light from galaxies indicates that the universe is expanding.
Question 6 Responses (Evidence Supporting the Big Bang):
- Cosmic background radiation.
- Rate of star formation.
Question 7 Responses:
- DARK MATTER: Is not made of atoms, does not emit, absorb or reflect light.
- BARONIC MATTER: Is made of atoms, can be observed directly.
Question 8 Responses:
- Gravitational lensing looks like arcs and is created by light from distant galaxies magnified by the gravity of dark matter around the galaxy. Gravitational lensing is caused by the gravity of dark matter, which causes the distortion of the arcs.
Question 9 Responses (Types of Matter):
- Baryonic matter, which is made up of atoms, and dark matter which is not. Fritz Zwicky hypothesized that galaxies inside the Coma Cluster were being held intact by dark matter. Scientists believe that galaxies would break apart if baryonic matter were absent causing the structures of the galaxy to fall apart.
Question 10 Response:
- It causes the expansion of the universe to accelerate.
Question 11 Responses (Correct Matches):
- Accelerating expansion - dark energy.
- Greatest percent of mass of universe - dark matter.
Question 12 Responses (Evidence):
- The ratios of hydrogen and helium in the universe match those of the early universe.
- The universe began as a very high density singularity.
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