Mechanical Energy Explained for children

What is energy. Explain Energy
What is Kinetic Energymechanical energy and kinetic energyWhat is sound energy?
What is Thermal or Heat Energy?
What is Chemical Energy?
What is Electrical Energy?
What is Gravitational Energy?Explain elastic energy to kidsRadiant energy from electromagnetic wavesNuclear energy Nuclear Fission and uclear FusionWhat is Energy Stored Transferred and Dissipation
Short quiz on energy

Asexual Reproduction
Charact' of Living Things
Rock Cycle
Simple Machines
States of Matter
The Five Senses
Water Cycle


Sound energy

Sound is the movement of energy through substances in longitudinal (compression/rarefaction) waves.

Sound is produced when a force causes an object or substance to vibrate — the energy is transferred through the substance in a wave. Typically, the energy in sound is far less than other forms of energy.

Let's see this illustration.
Sound energy example

A vibrating drum in a disco transfers energy to the room as sound. Kinetic energy from the moving air molecules transfers the sound energy to the dancers eardrums. Notice that Kinetic (movement) energy in the sticks is being transferred into sound energy.

Sound vibrations create sound waves which move through mediums such as
air and water before reaching our ears.

The diagram below shows how a sound wave is represented:
Sound Waves
Sound energy is usually measured by its pressure and intensity, in special units called pascals and decibels. Sometimes, loud noise can cause pain to people. This is called the threshold of pain. This threshold is different from person to person. For example, teens can handle a lot higher sound pressure than elderly people, or people who work in factories tend to have a higher threshold pressure because they get used to loud noise in the factories.

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