Why do we say “work done” and “energy change”

Answer with Explanation:

We say "work done" because it is the amount of force that causes an object's movement or displacement. Without movement or displacement, there is "no work done." So, it has to happen first or you have to push or pull something first in order to say that work has been done.

We say "energy change" because one form of energy is being transformed into another form of energy. For example, chemical energy can be transformed or changed into light energy through the combustion of coal. Energy can never be destroyed nor created and this follows the "Law of Conservation of Energy."

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.