P1-Energy Flashcards
What is the word equation for kinetic energy?
Kinetic Energy = 0.5 x mass x (velocity)^2
What is the word equation for Gravitational Potential energy?
GPE = weight x height
GPE = gravitational field strength x height x mass
What is the word equation for Power?
Power =Energy transferred
—————————-
Time taken
What is the word equation work done?
Work done = force x distance
What is the word equation for efficiency?
Efficiency =
useful output energy
——————————
total input energy
What are the 8 energy stores?
1.Chemical
2.Elastic Potential
3.Electrostatic
4.Gravitation Potential
5.Kinetic
6.Magnetic
7.Nuclear
8.Thermal
What are the 4 ways to transfer energy?
1.By Heating
2.By Radiation
(with sound and light)
3.Electrically
(with current)
4.Mechanically
(with a force)
What happens to dissipated energy
The energy spreads out to the surroundings
What store applies to this scenario :
Compasses
Magnetic
What store applies to this scenario :
Food
Chemical
What store applies to this scenario :
Buses moving
Kinetic
What store applies to this scenario :
Thunderclouds
Electrostatic
What store applies to this scenario :
An airplane in the sky
Gravitational Potential
What store applies to this scenario :
Drawn Catapults
Elastic Potential
What store applies to this scenario :
Hot Stoves
Thermal
What store applies to this scenario :
Radioisotopes
(unstable form of an element that emit radiation to transform into a more stable form)
Nuclear
What is useful energy?
Energy transferred to where and how it’s wanted
What is wasteful energy?
Energy that isn’t transferred usefully
Is this wasted or useful energy :
Wires being used to much becoming too hot - thermal energy store
Wasted
Is this wasted or useful energy :
Tumble dryers using heat to dry the clothes and spinning so that the clothes will dry quickly -
thermal energy store
kinetic energy store
Useful
