Energy Flashcards
Joules - KJ
MJ
GJ
Kj ( kilojoules ) 1kj = 1,000J
Mj ( megajoules) 1mj = 1,000,000j
Gj ( gigajoule) 1gj = 1,000,000,000j
Renewable
This is an energy source that can be used over and over again
Non -renewable
This is an energy source that can only be used once
Kinetic
Kinetic energy is the energy of motion. The faster the movement the greater the energy
Potential
Potential energy is the energy an object or system has because of the position of its parts. It’s often thought of as “ stored” energy
Gravitational
Gravitational potential energy is the energy an object or system has because of its height above the ground
Elastic
Energy stored in an elastic material that has been squashed stretched or bent
Chemical
Chemical energy is stored in the bonds of chemical compounds
Nuclear
Nuclear energy is the energy that is released when the nuclei of atoms are either split ( fission ) or united ( fusion )
Light
Light energy is the energy transmitted by electromagnetic radiation
Sound
Anything that makes a noise produces sound energy. It is a wave of vibration in the material it travels through and so is a form of kinetic energy
Thermal
Heat energy or thermal energy is the energy something has because of the motion of its individual molecules
Electrical
The energy produced when an electric current flows
This is a measure of how quickly the energy is being used
This is called power
Wood fire
Input chemical
Output heat light
Drawing a bow
Input kinetic
Output lastic
Firing an arrow
Input kinetic
Output lastic
Riding a motorbike
Input chemical
Output kinetic sound heat
A crying baby
Input chemical
Output sound
A falling apple
Input gravitational
Output kinetic
A wind turbine
Input kinetic
Output electrical sound
A torch
Input chemicals
Output light and heat
Which sources produces the least co2
Nuclear energy
Which of these sources is the lowest risk
Gas
Which of these sources is the highest risk
Nuclear energy
Which does the uk have the best supple of
Uk has the best supply of coal
Most reliable / flexible
Gas and oil
Name of group of fuels that’s coal oil and gas fall under
Fossil fuels
How was coal formed
It was formed 300 million years ago when the earth was covered with swampy forest
Coal
It’s cheap
It’s renewable
Coal is simple to store
Solar
Reduces electric bill
Environmently friendly
Energy independence
Wind
Wind creates jobs
It’s a clean fuel source
Wind creates can be built on existing a farms or ranches
Nuclear
Most carbon energy sources
It has one smales carbon foot prints
Renewable and cost effect
Hydroelectric
Renewable
Low emisions
Disadvantages - coal
It’s a negative impact on the environment
Disadvantages - solar
Use a lot of space
Disadvantages - wind
Unpredictable
Threat to wildlife
Disadvantages - nuclear
Accidents
Disadvantages - hydroelectric
It’s expensive
Not soft
