Transcript Potential vs. Kinetic Energy

Energy
6th Grade
Energy
• The ability to do work or cause change
Law of Conservation of
Energy
• Energy cannot be created nor destroyed
Examples of Potential
Energy
• By looking at these examples, what do
you think potential energy is?
What is potential
energy?
• Stored energy – energy that is not in
motion
• Roller Coaster EX:
– http://www.teachersdomain.org/asset/mck0
5_int_rollercoaster/
Examples of Kinetic
Energy
• What do all of these pictures have in
common?
What is kinetic energy?
• Energy in motion
• Examples of potential vs kinetic:
–
PE vs. KE Video clips
• http://www.youtube.com/watch?v=7K4V
0NvUxRg
• http://www.youtube.com/watch?v=uO5L
hU29udk
Thermal Energy
What is Thermal Energy?
• The energy of heat
– It transfers from hotter objects to cooler
objects
Temperature
• The measure of how hot or how cold
something is
Conduction
What is Conduction?
• The transfer of heat that occurs when 2
objects of different temperature touch
Conductor
What is a Conductor?
• A substance that heat or electricity can
easily flow through
Insulator
What is an Insulator?
• A material that protects or resists the
transfer of heat, electricity or noise
Convection
Convection
• The transfer of warm air up and cool air
down in a circular motion
What do you think is making
the warm air rise & the cool
air sink?
So, what’s more
dense…warm air or cool air?
Cool air = more dense
Warm air = less dense
Radiation
What is Radiation?
• The transfer of heat through empty space
Identify the following as
conduction, convection, or
radiation:
• Heat we feel from the sun
Identify the following as
conduction, convection, or
radiation:
• The heat you feel when you touch a hot
stove
Identify the following as
conduction, convection, or
radiation:
• Heat you feel when you touch a cup of
hot chocolate
Identify the following as
conduction, convection, or
radiation:
• This is responsible for making macaroni
rise and fall in a pot on the stove
Identify the following as
conduction, convection, or
radiation:
• Heat you feel when you sit around a
campfire
Chemical Energy
• Energy that is released during a
chemical reaction or change
• Type of Potential Energy
• Examples:
– Batteries
– Burning Wood
– Coal
– Oil
– Eating Food
Electrical Energy
• Energy in the form of electricity
• Type of Kinetic Energy
• Examples:
– Plugging in a PS3 to the wall
Light Energy
• Energy in the form of electromagnetic
waves
• Type of Kinetic Energy
• Examples:
– A flash light turning on
Mechanical Energy
• Energy of motion
• Type of Kinetic Energy
• Examples:
– Machines
– Batting Cage
– Running
Thermal Energy
• Heat energy
• Type of Kinetic Energy
• Examples:
– Microwave
– Stove
Nuclear Energy
• Energy that is released when the nuclei
of atoms are split or combined
• Type of Potential Energy
• Examples:
What type of energy
transformation is this?
Potential
Energy
Kinetic
Energy
• What energy transformation does a
flashlight go through when its
turned on?
Chemical  Electrical  Light
• What energy transformation do you
have when you eat & then go lift
weights?
Chemical 
Mechanical