Physics 2.8 - 2.12 Flashcards
What is pressure
pressure is the force applied per unit of area
What is the pressure formula?
P = f/a
What are the units and names of each variable in the pressure formula
P = pressure in pascals
F = force in newtons
A = area in m^2
Is pressure measured by using the perpendicular force to the surface of collision?
Yes it is
What are the two types of pressure
Regular pressure and liquid pressure
What is atmospheric pressure
Atmospheric pressure is a measure of the total force of all the air particles colliding with everything from all sides
Does pressure increase or decrease the higher up you go and why
Pressure decreases the higher up you go because there are less and less collisions with particles due to them being more spread out
What is atmospheric pressure determined by (3 answers)
Altitude
Depth
The force of each particle combined on top of each particle
Name three renewable and three non renewable sources of energy
Renewable:
Bio fuels
Hydroelectric energy
Wind energy
Non renewable:
Coal
Petroleum
Nuclear energy
What are fossil fuels
Fossil fuels are hydro carbons formed naturally in the earths crust from the remains of animals and plants
How do windmills / wind turbine generate energy
Windmills generate energy by transferring the kinetic energy they receive from the wind into electrical energy with the help of the generator inside of the windmill
How do solar panels generate energy
Solar panels generate energy by transferring the light rays that hit them into electrical energy
Name three pros for windmills and solar panels
They have low running costs
They are a renewable source of energy
They have a low environmental impact
Name three cons for windmills and solar panels
They have a high upfront cost
Pollutants are produced during their manufacturing
They are dependent on the weather
