Question

What are the two most common forms of waste energy?

a) Heat and light

b) Heat and sound

c) Light and sound

d) Light and kinetic

Answer 1

The two most common forms of waste energy are heat and sound.

Step-by-step explanation:

The two most common forms of waste energy are heat and sound. Heat energy is often wasted in various processes, such as when a vehicle engine generates excess heat that is not utilized. Sound energy is also commonly wasted, such as when it is produced as noise pollution.

For example, when a car is running, the engine generates heat as a byproduct of combustion. This heat is typically wasted and dissipates into the air instead of being used to perform useful work. Similarly, many activities in daily life generate unnecessary sound, which is a form of wasted energy.