loses heat when its heat flows to a cooler objerct
Warm blooded animals generate their own body heat, Cool-blooded they need to sun themselves to keep their bodies warm
can also travel through liquids and solids
It also helps us to learn more about our surroundings
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 world.no 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 does not have mass or take up space.hence
light tarvel very fast.
It travels in straigth line.
A statinary object does not have Kinetic energy
E.G..., Wind turbine use Kinetic energy of wind to produceduce electrictiy
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
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
heat,light,sonud,electrical and kinetic
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