Science primary 6; Energy
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Transcript of Science primary 6; Energy
![Page 1: Science primary 6; Energy](https://reader034.fdocuments.in/reader034/viewer/2022050720/54824a435906b5d8048b4683/html5/thumbnails/1.jpg)
ENERGY
Living things and non-living things need energy
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Energy to
Living things need energy to carry out life processes
grow
move
reproduce
make food
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Non-living things need energy to do work
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Energy stored in most of energy resources
Source of energy
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Forms of energy
Kinetic energy
Potential energy
Light energy
Heat energy
Sound energy
Electrical energy
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Kinetic energy is the form of energy a moving object possesses
The faster an object move, the greater its kinetic energy
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An object has potential energy when it stores energy
Potential energy
Chemical potential energy
Gravitational potential energy
Food, fuels, dry cells
Object position
- Object mass - Height from
the ground
stored in because of
depend on
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Light is a form of energy that allows us to see
We can see object if it reflects light or if it source of light which then enters our eyes.
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Plants use light energy to make food
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Heat is form of energy that flows from a region of higher temperature to lower temperature
Temperature is a measure of hotness or coldness an object
Heat
- the Sun - volcano - geyser - electrical appliances - burning fuels
- to cook food - to boil water - to catch fire - to change states of
matter
source uses for
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Sounds is a form of energy that can be detected by our ears
sound
communication can use
can produced - human activities - musical instruments - speaker of music
system
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Why our ears can detect sound energy?
Sound can travel
through
Air
Solids
Liquids
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Electrical energy is energy stored in electric field
Electric field
Power station
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How power station produced electricity?
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Dry cells
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Solar panel
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Conversion of Energy
Energy is used by transform its energy
Chemical potential energy
Electrical energy
Light energy
Heat energy
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Energy can’t be created or destroyed, but
Energy can be converted from one to another