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Light Energy

Electrical Energy


Heat Energy

Kinetic Energy


Sound Energy

Potential Energy

Energy Conversions

Amazing Anaconda

Hassan,Xio yan,Shu jin

Heat Energy

can feel cannot see

gain heat when heat from hotter flows to it

loses heat when its heat flows to a cooler objerct

living need to keep their boides warm in order to survive

Warm blooded animals generate their own body heat, Cool-blooded they need to sun themselves to keep their bodies warm

Sound Energy

type of energy that we can hear

We can heard sound because it travel through air to our ears

can also travel through liquids and solids

We use sound energy to communicate

It also helps us to learn more about our surroundings

Sound is very useful to people

Light Energy


Without light,our world will be turn into total darkness.the plant cannot photosythesis.if the plant not photosyhesis there is no food in the food.we will died..

SOURCES OF LIGHT, THE SUN is the main source of energy for living thing., Sun,Fire works,Fire flys,Fire

REFLECTION OF LIGHT, When light falls on an object,some of it baouces back.

SHADOW, when light shines on the object and reflected in our eyes

light is form of energy

light does not have mass or take up space.hence

light tarvel very fast.

It travels in straigth line.

help us to see

Kinetic Energy

energyf its motion.

How much Kinetic energydepends on how fast the object is moving

An object gains Kinetic energy when it start to move and loses Kinetic energy when it slows down or stop

A statinary object does not have Kinetic energy

The effects of Kinetic energy can also be observed in nature

The more mass a moving object has, the greater its Kinetic energy

The faster the object move the greater the kinetic energy is.

Some object make use of Kinetic energy

E.G..., Wind turbine use Kinetic energy of wind to produceduce electrictiy

Potential Energy

Potential energy that can be stored comes in a number of different forms


Fuels,such as wood ,petrol ,and food have Chemical potentional energy


energy that is store in an object of its location

the higher the object is place its the greater gravitational potential energy


store in an elastic object as being stretched or compressed

When the string of a bow is pull back, it gains eleastic potential engery. When it released,the arrow shoot out

A compressed string, 'jack in a box', is one type of Elastic potential energy. the toy inside the box pops up when it open

Why We Need Energy?

Living things need energy to carry out life processes

What Is Energy?

Energy is a ability to do or work or make thing move

How Energy Is From?

Energy flow from the sun to living thing.

Electrical Energy


Things that use electric., E.G..., television,microwave,hand phone, electric city at home.etc

most wide-used forms of energy.

can affect almost every part of our lives

is made available when electricity flows in electric an circuit

The Electrical Energy for these devices is usuallysupplied by batteries

Some device have solar cell, E.G..., calculators, Solar cell able to convert sunlight to electrical energy

froms of energy

energy in action

heat,light,sonud,electrical and kinetic

stored energy


Energy Conversions

cannot be destroyed

Energy only can be converted

Energy can be converted from one to another

When you throw a basketball, it moves and gains kinetic energy, this energy is not created by you but is converted from another form of energy

Solar panels convert light energy from sun into electrical energy