Potential or Kinetic
energy of motion
kinetic
a person running on the street
mechanical kinetic
type of heat transfer when objects are touching
conduction
A radio blasting music
sound kinetic
energy due to its position or chemical composition
potential energy
a person's hands being heated by a cup of hot cocoa
thermal kinetic
warm air rises; cool air sinks
convection
A person digesting food
mechanical & thermal kinetic
electrical energy
kinetic
a roller coaster at the top of a hill
gravitational potential
heat that is transferred in electromagnetic waves
radiation
Where on a roller coaster is there the most potential energy? Where is there the most kinetic?
Most potential: at the top of a hill
Most kinetic: at the bottom of a hill
electrostatic energy
potential
gasoline in a car before it is started up
chemical potential
Why would you want a rubber cover on the handle of a pan?
The rubber is an insulator, so it does not let heat pass through it easily. You would want it on the pan handle so that your hand does not get burnt when you touch the handle.
Why is thermal energy kinetic?
As a substance is heated up, its particles MOVE faster and faster.
What is the difference between elastic and chemical potential energy? Give an example of each.
Elastic: potential energy when an object is stretched or twisted. Ex: a rubber band stretched
Chemical: potential energy stored in the chemical bonds of a substance. Ex: food sitting on a plate
a person putting a hair tie in their hair
elastic potential
What is the difference between a conductor and an insulator? Give an example of each.
A conductor lets heat pass through it easily, and an insulator does NOT let heat pass through it easily.
Conductor example: silver, aluminum, copper
Insulator example: rubber, wood, plastic, glass
Explain why sound energy is kinetic.
Sound energy is a result of tiny vibrations. Because these vibrations are movement, sound energy is kinetic.