Types of Energy
Energy Transformations
Kinetic & Potential Energy
Heat Transfer
Random
100
The two main forms that all energy can be classified as is
Potential & Kinetic
100
A roller coaster works because __________ energy is transformed into ______ energy
potential (Gravitational potential energy)
kinetic (Mechanical kinetic energy)
100
Kinetic energy in a system can exceed the Potential energy in that system.
True or false
False
100
The transfer of thermal energy through direct contact
Conduction
100
Energy can be created and destroyed over and over
True or False
False
200
List the 4 types of potential energy we talked about in class
Chemical
Elastic
Nuclear
Gravitational
200
When we eat then go run a mile this is an example of what type of energy exchanges.
Chemical to mechanical
200
What variables have the most effect on gravitational potential energy
Height and mass
200
The Transfer of thermal energy from one source to another through space (a medium)
Radiation
200
When enough energy is added or taken away from a material is will cause it to undergo a ______ _______
Hint adding pressure can also cause this to happen
Phase Change
300
List the 5 types of kinetic energy we discussed in class
Mechanical
Sound
Radiant
Electrical
Thermal
300
When I turn my T.V. on I transform electrical energy into ________ & ________
sound & radiant
300
What variables have the most effect on mechanical energy
Mass and speed
300
These types of heat transfer happen in fluids and moves thermal energy by the flow of alternating currents
Convection
300
The movement of thermal energy from one thing to another is called
Heat
400
Energy that is carried by electromagnetic waves (such as light, microwaves, magnetic waves ect...
Radiant
400
Lighting a match is an example of turning ________ energy (during the strike) into _______ _____ ________ energy (once the match is lit)
Mechanical
Sound
Thermal
Radiant
400
Where is PE the highest, and where is KE the highest.
PE = Top of hill one
KE = End of the ride
400
This is the average kinetic energy in the particles that make up a material and can be measured
Temperature
400
In an experimental set up you have two variables what are the names of those variables and what do they do
Independant- Manipulated variables
Dependent - Responding variables
500
This type of energy can exist as potential and kinetic depending on how it's used
Mechanical
Elastic mechanical energy- potential
Moving mechanical energy- kinetic
500
Why are we not able to make a perpetual energy machine (A machine that only needs energy input one time and can run continuously)
A small amount of energy is lost during energy exchanges in the form on thermal energy
500
If a roller coaster's initial hill has a height of 80 meters and the last loop of the roller coaster covers a height of 90 meters would the coaster, make it all the way through the track and explain your answer.
No the coaster would not make it all the way around the track because it would not have enough energy to complete its course.
500
What is thermal energy
The sum of kinetic and potential energy in the particles that make up a material
500
Describe a scenario in which you can see all three forms of thermal energy exchange
Various answers but should explain conduction, convection, radiation.