How can kinetic energy be stored?
Kinetic energy can be stored. For example, it takes work to lift a weight and place it on a shelf or to compress a spring. Kinetic energy can also be transferred from one body to another in a collision, which can be elastic or inelastic. One example of an elastic collision would be one billiard ball striking another.
What is the difference between electrical energy and light energy?
From what little I understand, electricity is just electrons (sub atomic particles) moving through a conductor. Light is also just subatomic particles moving through a conductor (i.e. transparent medium) and both are part of the electromagnetic spectrum, if I understand this correctly.
Why is light and electricity called energy?
Heat, light, and sound are all forms of energy. Visible light can be produced, reflected, refracted, and separated into light of various colors. Sound is created by vibration and cannot travel through a vacuum. Pitch is determined by the vibration rate of the sound source.
Is electricity a light energy?
Light is a form of energy, which is why photovoltaic cells can harness the primary energy flow of sunlight to make electricity. Light is needed for humans to maintain a high quality of life and is one of the major uses of energy (often electricity, but fire works as well, often in the form of burning biomass).
How is light energy different from sound energy?
Light is a form of electromagnetic wave, whereas sound is a pressure density wave. Light does not require any medium to travel but sound does require a medium to travel. Light energy is quantized in packets of energy called photons, but sound energy is a continuous stream of energy on the scale.
How does sound form energy?
In simple terms, sound energy comes from vibrations moving through something. Solids, liquids, and gases all transmit sound as energy waves. Sound energy is the result when a force, either sound or pressure, makes an object or substance vibrate. Those sound waves are called kinetic mechanical energy.