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conduction, convection, radiation

a study on heat and energy transfer through conduction, convection, and radiation.
by

Stephanie Wagner

on 24 January 2014

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Transcript of conduction, convection, radiation

Energy
Energy is everywhere
This sword in Halo is made out of plasma energy.
So what the heck is
ENERGY anyway?
ENERGY - energy is the ability
of something to do work.
SOOOO......
GIVE ME AN EXAMPLE.
Every time you go to P.E.,
you use ENERGY to run around
play games.
Every morning when you wake up,
your body uses ENERGY to get you
out of bed.
Your brain also uses ENERGY to help
you decide what to eat for breakfast
and what clothes to wear to school.
If energy is everywhere,
where does it go after it gets used?
Energy can never be created
or destroyed, only transferred
from one thing to another.
This is called the:
LAW OF CONSERVATION OF ENERGY
One type of ENERGY is called:
THERMAL ENERGY.
Thermal Energy is the total amount of heat
a substance has from moving atoms and molecules.

The faster the atoms move, the more heat an
object or substance has.
What is TEMPERATURE?
Temperature is the measure of
how fast the atoms in an object or
substance is moving.
What is HEAT?
HEAT is the transfer of
THERMAL ENERGY from one thing
to another.
How does HEAT
get from one object to
another?
CONDUCTION
Conduction is the transfer of heat from one
object to another through direct contact.
EXAMPLE
touching a hot stove!
ouch!
CONVECTION
Convection is the transfer of heat
through liquids or gasses.
EXAMPLE
Your oven at home cooks food
by warming the air around it.
This is why it is called a
"CONVECTION OVEN"
RADIATION
Radiation is the transfer of energy
or heat through electromagnetic waves.
EXAMPLE
Everytime you use a microwave,
you are heating your food with
radiation.
Everytime you walk outside and feel
the warmth of the sun on your skin,
that is heat caused by radiation.
Full transcript