Energy Flashcards
Name 8 energy stores
Kinetic
Internal
Nuclear
Magnetic
Electrostatic
Elastic P
Gravitational P
Chemical P
Name 4 energy transfers
Mechanical
Heating
Radiation
Electricity
What is the calculation for efficiency?
Useful energy / total energy
How can you increase efficiency?
Lubrication
Insulation
What is the equation for power?
Power (W) = energy / time
What do we mean by non - renewable recourses
Cant be replenished as it is used
What is energy used for?
Heating and electricity
What are 2 advantages and disadvantages of wind power
- Expensive
Unreliable
+
No fuel costs
Doesn’t damage the landscape
2 advantages and disadvantages of solar power?
+
Reliable in sunny areas
No pollution
-
High costs
Only work at specific times in the day
Geothermal : 2 adv and 2 disadv
+
Reliable
Little damage to the earth
-
High costs for plants
Only available in some areas
Hydro electric power 2adv and 2 disadv
+
Can respond to immediate demand
No pollution
Reliable
-
Flooding
High costs
2 adv 2 disadv of wave power
+
No pollution
No fuel costs
-
High costs
Disturbs sea bed
2 adv and 2 disadv of tidal barricades
+
Can respond to immediate demand
No fuel costs
-
High costs
Disturbs wildlife
2 adv and disadv biofuels
+
Easy to transport
Cheap
-
Destroys environment
Can’t respond to immediate demand
