How is gravitational lensing related to dark matter?(1 point) Responses The gravity of dark matter absorbs light from distant sources. The gravity of dark matter absorbs light from distant sources. Dark matter emits lens-shaped rings of light. Dark matter emits lens-shaped rings of light. The gravity of dark matter distorts light from distant sources. The gravity of dark matter distorts light from distant sources. Dark matter uses gravitational lensing to create dark energy.
The gravity of dark matter distorts light from distant sources.
Which correctly relate dark matter and dark energy to the Big Bang theory? Select the two correct answers.(1 point) Responses Dark energy is the source of 25 percent of the mass of the universe. Dark energy is the source of 25 percent of the mass of the universe. Because of dark matter, gravitational interactions cause galaxies to develop. Because of dark matter, gravitational interactions cause galaxies to develop. Without dark energy, structures in the early universe would never have developed. Without dark energy, structures in the early universe would never have developed. Through dark energy, the universe is expanding at a faster and faster rate.
Without dark energy, structures in the early universe would never have developed.
Through dark energy, the universe is expanding at a faster and faster rate.
Which statements about nuclear fission and nuclear fusion are true? Select the two correct answers. (1 point) Responses They both release large amounts of energy. They both release large amounts of energy. They both involve one atom splitting into two atoms. They both involve one atom splitting into two atoms. They both involve two atoms fusing into one atom. They both involve two atoms fusing into one atom. They both occur in the nucleus of an atom.
They both release large amounts of energy.
They both occur in the nucleus of an atom.
How does the proportion of hydrogen and helium in the universe support the Big Bang theory?(1 point) Responses It demonstrates the rate of expansion predicted by the theory. It demonstrates the rate of expansion predicted by the theory. It is the proportion predicted to be present in the early universe. It is the proportion predicted to be present in the early universe. It proves that matter must be formed under high temperatures. It proves that matter must be formed under high temperatures. it shows that only simple elements are present in the universe.
It is the proportion predicted to be present in the early universe.
Which statement about nuclear fission is correct?(1 point) Responses Nuclear fission is used to generate water at nuclear power plants. Nuclear fission is used to generate water at nuclear power plants. Nuclear fission releases small amount of energy. Nuclear fission releases small amount of energy. The fuel for nuclear fission is often helium. The fuel for nuclear fission is often helium. Nuclear fission takes place in the nucleus of atoms.
Nuclear fission takes place in the nucleus of atoms.
The stars at the edges of a galaxy are rotating around the galaxy’s center at the same speed as the stars in the middle of the galaxy. How does this provide evidence of dark matter?(1 point) Responses Dark matter emits the light that astronomers need to see the orbital speeds of the stars. Dark matter emits the light that astronomers need to see the orbital speeds of the stars. Dark matter absorbs light from outside the galaxy, allowing the light of the stars in the galaxy to show the orbital speeds of the stars. Dark matter absorbs light from outside the galaxy, allowing the light of the stars in the galaxy to show the orbital speeds of the stars. Dark matter provides the gravity that allows the stars to rotate at the same speed. Dark matter provides the gravity that allows the stars to rotate at the same speed. Dark matter subtracts gravity, which allows the stars to rotate at the same spee
