Every second of every day, the sun pumps energy towards earth, firing our planet with light and life. Though you cannot always see it, energy is everywhere you look. It's locked in the atoms jiggling inside things and it keeps that pumps blood through veins beating steadily. Energy is the secret power behind everything in our world.
THE S.I. UNIT OF ENERGY IS JOULE
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WHAT IS ENERGY?
Things happen because forces push and pull, and whenever forces are at work, energy is needed to power them. Mass is another kind of energy. Tiny amounts of mass can be converted into huge amounts of energy.
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TYPES OF ENERGY
Energy can exist in different forms, most of which can be converted into other forms.
* KINETIC ENERGY
Moving things have kinetic energy. The heavier and faster they are, the more kinetic energy they have.
*ELECTRICAL ENERGY
Electricity is energy carried by charged particle called electron moving through wires.
*HEAT ENERGY
Hot things have more energy than cold one, because the atoms inside them jiggle around more quickly.
*CHEMICAL ENERGY
Food, fuel, and batteries store energy within the chemical compounds they're made of.
*SOUND ENERGY
When objects vibrate, they send energy waves travelling through the air, which we hear as sounds.
*DARK ENERGY
Most of the universe's energy in the form of mysterious dark energy. No-one really knows what it is.
*LIGHT ENERGY
Light travels at high speed and in straight lines. Like radio waves and X-rays, it is a type of electromagnetic waves.
*POTENTIAL ENERGY
This is stored energy.
*NUCLEAR ENERGY
Atoms are bound together by energy, which they release when they split apart in nuclear reaction.
ENERGY WAVES
When energy moves through materials such as air and water, it travels as waves. we can see waves on water, but we can't see light waves or seismic waves carrying earthquakes underground.
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