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Energy - Coggle Diagram
Energy
Technology improves the ways people use energy
Technology improves energy conversions
Most of the wasted energy is heat
eg. common incandescent energy light bulb
Efficient energy
LED converts most electrical energy into light
FIrst LEDs not as bright
Efficient cars
A large percentage of gasoline's chemical energy is not converted to kinetic energy
Technology improves the use of energy resources
Much of the energy used on Earth comes from fossil fuels
Scientists and engineers are looking at other energy sources
Energy can change forms, but is never lost
Energy changes forms
Potential energy ------ Kinetic energy
Conversions between potential energy and kinetic energy
Electrical energy eg. light bulb changed into light and heat
Energy is always conserved
Kinetic energy is released when kicking a soccer ball
Energy conversions may produce unwanted forms of energy
When energy changes forms, the total amount of energy is conserved
The amount of useful energy is almost always less than the total amount of energy
Energy exists in different forms
Different forms of energy have different uses
Energy takes many different forms and has many different uses
Plants use energy from the sun to grow
Energy
All forms of energy cause changes to occur
You are source of energy
Forms of energy:
Mechanical energy
Sound energy
Nuclear energy
Chemical energy
Thermal energy
Electromagnetic energy
Kinetic energy and potential energy are the two general types of energy
Kinetic energy
Increases as Mass increases
Increases as speed increases
Potential energy
Stored energy in an object