Energy Stores
Kinetic
Chemical
Nuclear
GPE
Strain
Thermal
Name 2 energy resources.
Wind, Solar, Hydroelectric, Tidal, Geothermal
What is friction?
A force between 2 touching objects
What is pressure?
The force of an object pushing on a surface
OR
The force of gas/liquid particles hitting against a surface
How is energy stored in a moving car?
Kinetic (Chemical, Thermal)
Name one energy resource where the energy does not originally come from the sun?
Geothermal, Tidal
What does friction generate?
Heat
Which shoe has more pressure?
A - Ice skate
Which store of energy is in food and fuels?
Chemical
When can wind energy be used?
When there is a lot of wind
Friction is generated in the brakes of a car. Is this useful friction or not useful?
Useful
What are the units for pressure?
Newtons (N)
Give an example of something that contains a lot of GPE?
Any object that is high up
How is electricity produced in a hydroelectric power station?
Water flows through turbines to generate electricity
What does friction do to the speed of an object?
Slows it down
Where is pressure the highest?
B - bottom of the lake
What are the energy stores in a ball that is thrown into the air and then falls back down?
GPE and kinetic
What is the best energy resource to use in the desert?
Solar energy / Solar cells
When screws get rusty they generate friction when being removed. Is this useful friction or not useful friction?
Not useful
Which ballet dancer is exerting more pressure and why?
B - On pointe
There is the same amount of force going through a smaller surface area