The universe’s total amount of energy does not ever change, but the amount of this energy that is available to do work varies tremendously. What statement best explains the changes in available energy?(1 point)
The changes in available energy are due to the conversion of energy from one form to another.
The options are:
The only way to create energy is through nuclear reactions.
The only way to create energy is through nuclear reactions.
Energy transfer always occurs through heat.
Energy transfer always occurs through heat.
100% of energy is always converted with perfect efficiency.
100% of energy is always converted with perfect efficiency.
Energy constantly changes from one form to another.
Energy constantly changes from one form to another.
Are you sure?
Apologies for the confusion. You are correct. The statement that best explains the changes in available energy is: Energy constantly changes from one form to another.
Heated gases will rise to the top of its container. Why does this occur?(1 point)
Responses
Heated gases will decrease in kinetic energy and decrease in density.
Heated gases will decrease in kinetic energy and decrease in density.
Heated gases will increase in kinetic energy and increase in density.
Heated gases will increase in kinetic energy and increase in density.
Heated gases will increase in kinetic energy and decrease in density.
Heated gases will increase in kinetic energy and decrease in density.
Heated gases will decrease in kinetic energy and increase in density.