Download Temperature

Do Now: How did the
initial drop height
change the bounce
height? Which ball
bounced the highest?
Bouncy Ball Lab Due
TOMORROW
What is
temperature?
Is temperature the same
thing as heat?
Video Clip
Thermometer Demo!
Temperature is a measure
of how “hot” or “cold”
something is.
Temperature is
measured in arbitrary
units, like Fahrenheit,
Celsius or Kelvin.
Temperature is
proportional to the average
kinetic energy of the
molecules of the substance.
T 
= ½
2
mv
Temperature is therefore
proportional to the speed of
the molecules of a substance.
Velocity or speed
T 
2
= ½ mv
Tv
The higher the temperature,
the greater the average
speed of the molecules.
Brain Pop: Temp.
Velocity or speed
T 
2
= ½ mv
Tv
Heat is the thermal energy
transferred from a hot
object to a cold object.
Heat is measured
in energy units -Joules or
calories.
Heat always moves from a
warmer place to a cooler
place.
Hot2Cold Song
Hot objects in a cooler room
will cool to room temperature.
Cold objects in a warmer room will
heat up to room temperature.
If a cup of coffee and an
ice cream cone were left
on the table in this room
what would happen to
them? Why?
The cup of coffee will cool
until it reaches room
temperature. The ice
cream will melt and then
the liquid will warm to
room temperature.
The heat transferred is
proportional to the mass of
the object, the specific heat
capacity of the object and
the temperature change the
object undergoes.
Specific heat capacity
the amount of heat needed to
raise one gram of a substance by
one Celsius degree
It’s a measure of how much heat
something can “hold”
Specific heat capacity varies from
one substance to another