Potential Energy
What is potential energy?
Stored energy
What is kinetic energy?
Energy that is in motion.
Draw an energy flowchart for a ball being dropped from 1m high.
GPE --> ME --> SE
What is the GPE stored in a 60kg boy sitting at the top of a 2m high slide?
1176 Joules
What are the three types of PE?
Chemical
Elastic
Gravitational
What are the types of KE?
Mechanical, Sound, Thermal, Electrical, Light
Draw an energy flowchart for a slingshot being fired.
Elastic PE --> ME --> SE --> TE
What is the GPE of a 500g ball that is dropped from 7m?
34.3Joules
What is an example of Gravitational PE?
Ball being dropped
What is the unit used to measure energy?
Joules
What is the energy flowchart for a runner preparing to go on a run and then going on the run?
Chemical PE --> ME --> TE --> SE
What is the Kinetic Energy of a car that travels at a speed of 20m/s and has a mass of 1200kg?
240,000 Joules
What is an example of Elastic PE?
Bow and arrow.
Name three examples where you would see light energy.
Torch, computer screen, fire
What is the energy transformation for a child going down a slide?
What is the kinetic energy of a runner with a mass of 62kg running at a speed of 0.8m/s?
19.84 Joules
What is an example of Chemical PE?
Consuming food
Stove, Fire, Heater
What is the energy transformation for turning on the television?
Chemical PE --> Electrical --> Light --> Thermal --> Sound
A solar module produces up to 320 watts of power from 1500 watts of sunlight. What is its energy efficiency?
21.3%