S2 Electricity Flashcards
What are the 3 fossil fuels?
Coal, oil and natural gas
What are 3 disadvantages of fossil fuels?
They are finite
They contribute to acid rain
They produce greenhouse gases which contribute to global warming
What does the word ‘finite’ mean?
It is limited in supply and will one day run out
Why will we never run out of renewable sources?
They are replenished at the same rate as they are used up
What are the 4 main renewable sources?
Solar, wind, hydroelectric and biomass
What is the name of the particle responsible for electricity?
The electron
What type of charge do electrons have?
Negative
What happens when a positive and a negative charge are close to each other?
They attract
What happens when two negative charges are close to each other?
They repel
What happens when to positive charges are close to each other?
They repel
What is static electricity?
The build up of charge in one place
What is the name of the particle which is transferred to cause static electricity?
Electrons
What is electric current?
The flow of charged particles (electrons)
What is the unit used to measure current?
Amps (A)
What device is used to measure current?
Ammeter