Energy that increases as its temperature increases.

The energy that increases as its temperature increases is known as thermal energy. Here are the steps to understand this:

1. Energy is the capacity to do work or the ability to cause change. It exists in several forms such as heat, kinetic or mechanical energy, light, potential energy, and electrical energy.

2. Thermal energy is a type of kinetic energy (movement energy) because it is due to the movement of particles within an object.

3. When you heat an object, you're adding energy to it. This energy is absorbed by the particles within the object, causing them to move faster and collide with each other more often.

4. As the particles move faster, the temperature of the object increases.

5. Therefore, as the temperature of an object increases, so does its thermal energy.

6. However, it's important to note that not all substances heat up at the same rate. The specific heat capacity of a substance is the amount of heat energy required to raise the temperature of a specific amount of the substance by a certain temperature. Different substances have different specific heat capacities.