Question

Which of the following energy causes us the feeling of hotness or coldness?
A) Surface energy
B) Heat energy
C) Kinetic energy
D) Potential energy

Answer 1

Hint: The feeling of hotness or coldness is caused when the molecules in the thermometer vibrate more quickly. The kinetic energy of the atoms increases which causes them to spread out and rise up from the tube.

Complete step by step answer:
The work done by the force per unit area which makes a new surface is called surface energy. It quantifies the disruption of intermolecular bonds that occurs when a surface is created. The S.I unit for surface energy is $\dfrac{N}{m}$.
The movement of tiny particles called atoms, molecules or ions in solids, liquids and gases causes the heat energy to arise. This energy can transfer from one place to another. Heat can be defined as the transfer or flow due to the difference in temperature between two objects.
Kinetic energy can be defined as the energy possessed by the object or body during the motion. When an object or body is moving then the energy possessed by that object is said to have kinetic energy. The more the speed of a moving object the more will be kinetic energy and the less the speed of movement the less will be kinetic energy. The formula for kinetic energy is –
$K = \dfrac{1}{2}m{v^2}$
The potential energy can be defined as the energy which is stored in the body or conserved in the body. There are two types of potential energy:
1) Gravitational potential energy
2) Elastic potential energy
We feel the hotness or coldness due to the vibrations of the molecules of the substance more quickly. This movement of tiny particles like atoms is possessed by the heat energy which makes us feel the temperature of the substance.
Therefore, the correct option is (B).

Note: The matter in this universe is all made up of atoms, molecules and ions. These atoms and molecules of the particles are always in the motion which causes the movement of particles when they bump into each other and vibrate. This creates the object to attain the energy which is called heat energy.