Which correctly relate dark matter and dark energy to the Big Bang theory? Select the two correct answers.(1 point)
Responses
Through dark energy, the universe is expanding at a faster and faster rate.
Through dark energy, the universe is expanding at a faster and faster rate.
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.
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.
Which statements about nuclear fission and nuclear fusion are true? Select the two correct answers. (1 point)
Responses
They both occur in the nucleus of an atom.
They both occur in the nucleus of an atom.
They both involve one atom splitting into two atoms.
They both involve one atom splitting into two atoms.
They both release large amounts of energy.
They both release large amounts of energy.
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.
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.
Nuclear fission takes place in the nucleus of atoms.
Nuclear fission takes place in the nucleus of atoms.
The fuel for nuclear fission is often helium.
Nuclear fission takes place in the nucleus of atoms.
What type of evidence does cosmic background radiation provide about the origins of the universe?(1 point)
Responses
It supports predictions of the composition of the early universe.
It supports predictions of the composition of the early universe.
It verifies that the early universe was once extremely hot.
It verifies that the early universe was once extremely hot.
It proves that the universe is expanding.
It proves that the universe is expanding.
It pinpoints the size of the original universe.
Question
Drag and drop the words into the correct locations.(2 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Three pieces of evidence of universe expansion support the Big Bang Theory. The first piece of evidence, which Edwin Hubble discovered, is that Response area. The second piece of evidence is the change in universal temperature. The temperature Response area . The third piece of evidence is that Cosmic Microwave Background radiation is found Response area.
Three pieces of evidence of universe expansion support the Big Bang Theory. The first piece of evidence, which Edwin Hubble discovered, is that galaxies are moving away from each other. The second piece of evidence is the change in universal temperature. The temperature decreases as the universe expands. The third piece of evidence is that Cosmic Microwave Background radiation is found throughout the universe.
What type of evidence does cosmic background radiation provide about the origins of the universe?(1 point)
Responses
It supports predictions of the composition of the early universe.
It supports predictions of the composition of the early universe.
It verifies that the early universe was once extremely hot.
It verifies that the early universe was once extremely hot.
It proves that the universe is expanding.
It proves that the universe is expanding.
It pinpoints the size of the original universe.
The correct answer is: It supports predictions of the composition of the early universe.
The Universe Unit Review Practice
5 of 105 of 10 Items
Question
Drag and drop the words into the correct locations.(2 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Three pieces of evidence of universe expansion support the Big Bang Theory. The first piece of evidence, which Edwin Hubble discovered, is that Response area. The second piece of evidence is the change in universal temperature. The temperature Response area . The third piece of evidence is that Cosmic Microwave Background radiation is found Response area.
Three pieces of evidence of universe expansion support the Big Bang Theory. The first piece of evidence, which Edwin Hubble discovered, is that galaxies are moving away from each other. The second piece of evidence is the change in universal temperature. The temperature decreases as the universe expands. The third piece of evidence is that Cosmic Microwave Background radiation is found throughout the universe.
Drag and drop the words into the correct locations. (2 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Dark Response area is the only explanation for the structures of the early universe. Clumps of it led to Response area in the early universe. Without it, the universe would have Response area.
Dark matter is the only explanation for the structures of the early universe.
Clumps of it led to gravitational interactions in the early universe.
Without it, the universe would have developed differently.
How is gravitational lensing related to dark matter?(1 point)
Responses
Dark matter uses gravitational lensing to create dark energy.
Dark matter uses gravitational lensing to create dark energy.
The gravity of dark matter absorbs light from distant sources.
The gravity of dark matter absorbs light from distant sources.
The gravity of dark matter distorts light from distant sources.
The gravity of dark matter distorts light from distant sources.
Dark matter emits lens-shaped rings of light.
The gravity of dark matter distorts light from distant sources.
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 shows that only simple elements are present in the universe.
it shows that only simple elements are present in the universe.
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 is the proportion predicted to be present in the early universe.
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 subtracts gravity, which allows the stars to rotate at the same speed.
Dark matter subtracts gravity, which 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 provides the gravity that allows the stars to rotate at the same speed.
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.