Which describes nuclear fusion?(1 point)
Responses
starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms
starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms
starts when two atoms slam together, causing the larger atom to split into two smaller atoms
starts when two atoms slam together, causing the larger atom to split into two smaller atoms
starts when a neutron slams into an atom, causing two atoms to form one, heavier atom
starts when a neutron slams into an atom, causing two atoms to form one, heavier atom
starts when two atoms slam together to form one, heavier atom
starts when two atoms slam together to form one, heavier atom
starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms
It was extremely hot.
It was very tiny.
Which describes nuclear fission?(1 point)
Responses
starts when a neutron slams into an atom, causing two atoms to form one, heavier atom
starts when a neutron slams into an atom, causing two atoms to form one, heavier atom
starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms
starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms
starts when two atoms slam together, causing the larger atom to split into two smaller atoms
starts when two atoms slam together, causing the larger atom to split into two smaller atoms
starts when two atoms slam together to form one, heavier atom
What does the evidence supporting the Big Bang theory assume about the universe when it began? Select the two correct answers.(1 point)
Responses
It was composed of ice.
It was composed of ice.
It was extremely hot.
It was extremely hot.
It was very tiny.
It was very tiny.
It was contracting
The correct description of nuclear fusion is "starts when two atoms slam together to form one, heavier atom".
Nuclear fusion is a process in which two light atomic nuclei combine to form a heavier nucleus. This occurs under extreme conditions of temperature and pressure, such as those found in the core of a star. When these conditions are met, the nuclei of atoms come close enough for their positive charges to overcome the electromagnetic repulsion between them, and they undergo a fusion reaction. This reaction releases a tremendous amount of energy in the form of light and heat. It is the process that powers the sun and other stars in the universe.