Energy Transformation Of A Flashlight

Energy

Forms of free energy

Electromagnetic wave energy

The energy we go from the Sun travels through space as electromagnetic waves. These waves include calorie-free, ultraviolet (UV) lite and infrared. Other examples of electromagnetic wave free energy include radio waves, which comport radio, goggle box and mobile telephone letters, 10-rays and gamma rays. Electromagnetic waves carry energy in the form of electric and magnetic fields.

We can come across lite with our eyes and we can experience the infrared energy by the warmth information technology produces. The UV light free energy causes sunburn and pare cancer.

Sometimes the electromagnetic wave energy from the Sun is referred to every bit solar energy. Solar free energy is just a mixture of several types of electromagnetic free energy, namely calorie-free, UV and infrared.

Heat free energy

When solar energy is absorbed by your peel or by any other material, the surface layer of that material gets warmer. The electromagnetic wave energy is absorbed by the textile it hits, and is converted into heat energy.

Solar hot water system

Some appliances produce heat energy that we exercise not want. Most tv sets get warm because they produce some unwanted estrus free energy. When we exercise a lot of physical action our body tends to produce more heat than nosotros want and we showtime to perspire to help u.s. absurd.

Estrus energy is caused by the vibration of the atoms and molecules in a material. The hotter a material becomes the greater the vibrations of the atoms and molecules. When electromagnetic wave energy is captivated by a fabric information technology makes the atoms in that cloth vibrate more strongly, thus making information technology warmer.

Chemic energy

The energy that is stored in the food we consume is stored as chemical energy. For example, sugar and fat both have a lot of chemical free energy stored in them. You can look up how much chemical energy is stored in many foods by reading the labels on the packets. The amount of energy is measured in kilojoules (kJ).

Many other chemicals contain lots of energy. The head of a match contains chemical energy. When it is struck the match head burns brightly giving out heat and light energy.

Explosives incorporate large amounts of chemical free energy, which can be released very quickly and cause smashing devastation if detonated.

Fuels such equally coal, oil and petrol contain chemic energy that we tin can use to generate electricity or to run machines and vehicles.

Sound free energy

When you turn on a CD player y'all can dance to the music. The music travels as sound free energy through the air from the speaker to your ears.

Audio energy is produced by vibrating objects. If you gently touch the loud speaker, you tin feel it vibrating with the music.

The vibrating speaker causes the air to vibrate and these vibrations travel through the air equally sound waves. When the sound waves reach your ear they crusade your ears to vibrate and your brain interprets these vibrations as music.

Hit a smash with a hammer or using a blender also produces sound waves, which travel through the air to your ear.

Sound waves also travel through liquids such as h2o and through solids such as wood or metal. Withal, audio waves cannot travel through space considering there is no matter in space to vibrate.

Electrical energy

A torch bombardment has chemic energy stored in it. When the battery is connected in a circuit, this chemical energy is changed into electrical energy, which is then carried by the electricity from the battery to a low-cal globe where it can exist inverse into light.

Electrical energy can also be produced by a generator, which is a machine which is used in power stations.

Electrical energy can exist used to bulldoze an electrical motor or make a hair dryer work.

Electrical energy is carried by the electrons through a circuit.

Mechanical energy

There are ii types of mechanical energy: stored energy (potential energy) and motility free energy (kinetic energy).

Stored energy (potential energy)

When you stretch a safety band you are storing energy in the condom. You tin can feel this stored energy when yous let it go. It can sting your fingers or it can zoom beyond the room.

You tin store energy in lots of other stretchy and squeezy materials, such as elastic, springs and stretch fabrics.

When you bound on a trampoline, every bit you become down some of your energy is stored in the stretched springs around the edge of the mat. This free energy is then used to assist lift you high into the air on the rebound.

Many old-fashioned clocks had a big metal spring inside them. When you current of air the clock you store free energy in the spring. This energy is then used to keep the clock going for days.

Another example of stored energy is when an object has been lifted. For case, when a brick is lifted above the ground it has stored energy in it. If it is allow go, it volition fall and practise damage when it hits the footing.

A high diver has lots of stored energy when they are on the diving platform. When they dive this stored energy helps make the splash when they hit the water.

Stored energy is also chosen potential energy.

Motion energy (kinetic free energy)

When a ball is bowled in a bowling aisle it moves down the lane until information technology hits the pins at the other cease. With a bit of skill it will knock over many pins. The bowling ball had lots of motion energy which it used to knock the pins over.

Any moving object has motion energy. A moving cricket brawl has the energy to knock over the stumps. The motility free energy in a moving machine can practise nifty damage if it hits another automobile.

The wind has a lot of motion free energy, and this tin can be used to turn windmills or air current generators.

Motion energy is likewise called kinetic energy.

Free energy transformations

The primary forms of energy are:

electromagnetic waves (eg low-cal, infrared, ultraviolet and solar)
heat
sound
electric
mechanical
stored or potential and motion or kinetic energy.

Any of the above forms of energy can be changed into other forms of energy. Yet, no energy is ever lost, nor can information technology be created from nothing. This tin be stated as a law so that it can be applied to new situations as they are encountered: Free energy is never created or lost, information technology can only be converted from one course of energy to other forms of energy.

When a matchstick is lit, the chemic free energy in the match changes into oestrus energy and light energy.

This can be represented past an energy menses diagram.

Energy diagram for a burning match

A diver on a high diving platform has stored (potential) free energy. When they dive this stored energy is converted to motility free energy as they accelerate downward. When they hit the water this motion free energy is transformed into the sound energy of the splash and the movement energy of the water.

Conversion of potential energy to other forms

A CD player uses the electrical energy in a battery to produce sound energy. This can be represented by an energy flow diagram.

Energy diagram for a CD player

A small-scale amount of heat energy may also be produced, but this is ordinarily unwanted, wasted free energy.

An appliance is more efficient if less energy is inverse into the unwanted forms of free energy.

What is energy?

Your trunk gets energy from the nutrient that you eat. This energy gives you the ability to do lots of work. Yous need energy to cut the lawn or dig a pigsty. Athletes who compete in marathons demand to get lots of energy from their nutrient to help them through the event.

Machines also need energy for them to do work. A automobile would not go if it could non go energy from its fuel. A blender needs to get energy from the electricity information technology uses in order to work in the kitchen.

Energy is the capacity to do work.

If a living matter has lots of energy, information technology tin can do lots of work. When it does the work it transforms energy from one grade to another.

If a motorcar has lots of energy in its fuel, it can do lots of work. When information technology does the piece of work it transforms the energy into other forms.

The sources of free energy

There are many natural substances that contain lots of energy. Nigh of these are called fuels or foods.

Coal, oil and natural gas all contain chemicals that can supply lots of energy.

Many foods contain chemicals that can supply lots of energy. Fat foods contain large amounts of free energy. Sugary food (called carbohydrates) also contain lots of energy.

The free energy in the fuels and foods originally came from the Sun. The Dominicus is producing huge amounts of energy all the time. Some of this free energy comes to the Globe in the course of estrus energy and lite free energy.

The plants utilise some of the light energy from the Sun to make their own food in the process called photosynthesis. This energy is stored in the plants. When we eat the plants we swallow this energy.

Animals too go their energy by eating the plants. Some animals get their energy by eating the animals that ate the plants.

Oil and coal come up from the decayed and buried remains of ancient plants and animals. So the energy in oil and coal originally came from the Dominicus.