Energy Flashcards
(26 cards)
Name all 8 energy stores?
.Kinetic
.Chemical
.thermal
.gravitational potential
.magnetic
.electrostatic
.elastic potential
.nuclear
What is energy measured in?
Joules, J
What is the equation of work?
Force x distance
What does doing work do?
Can transfer energy from one store to another
What is force measured in?
Newtons, N
Power equation?
Energy transferred / time
What is power?
The rate at which energy is transferred or the rate at which work is done.
What is power measured in?
watts, W
What is energy transferred measured in?
joules, J
What is specific heat capacity?
The amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius.
What is specific heat capacity measured in?
Joules per kg per degrees C
What are the 3 main fossil fuels?
.coal
.oil
.gas
What is one of the products produced from fossil fuels?
Sulfur dioxide
What is acid rain?
When sulfur dioxide combines with water
What is the average consumption of electricity?
36 GW
What are the 6 sustainable energy sources?
.Nuclear
.Biomass
.Using tides
.Wind power
.Solar power
.Geothermal power
What are the 4 energy transfers or pathways?
.Mechanical
.Electrical
.Heating
.Radiation
When is something a mechanical pathway?
When it is a force moving an object
When is something and electrical pathway?
When it is charges moving in a circuit
What makes something a heating pathway?
When there is a temperature difference
What makes something a radiation pathway?
When it is transferred by a wave, light or infrared
Why are metals better conductors?
They have delocalised electrons to carry the charge
What is infrared radiation?
A form of electromagnetic radiation
What is the wavelength of infrared radiation?
Longer than visible light
