Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Fire and Ice

No description

Kerryann Goode

on 30 June 2013

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Fire and Ice

Heat is a transfer of energy
Phase Changes
Energy is absorbed from surroundings as a material changes from solid to liquid to gas. (COOLING PROCESS).
Measured in joules and calories



by: Kerryann Goode
by: Kerryann Goode
- How hot or cold something is.
- the transfer of heat from one place to another
by the movement of fluids.
- The measurement of the average kinetic energy of molecules in an object or system.
water vapor
Change in Temperature:
+ energy
energy(heat) released
energy(heat) released
energy(heat) absorbed
energy(heat) absorbed
-heat transferred between a solid and a moving fluid when there is temperature difference.
-transferrs from hot to cold
Energy is released to the surroundings as a material changes from gas to liquid to solid (WARMING PROCESS).
Due to a temperature difference
Water is a special case:
Most dense at 4 degrees Celsius
Expands as it gets closer to freezing, 4 degrees C to 0 degrees C, and expands from 4 degrees C upward
Less dense in its solid form (ice) than liquid (water)
Gases expand more than liquids
Thermal Expansion
Materials expand when heated.
Is a transfer of energy
Heat is always transferred from hot to cold
movement of heated material (fluids)
The air above the fire is heated by convection
Electromagnetic waves
Does not require any physical substance to transfer any energy
It can travel through the vacuum of space
(radiant heat)
Direct transfer of heat from molecule to molecule
The log is being heated by the direct contact with the heat of the flames.
measure of average molecular kinetic energy
Molecular kinetic energy is how much molecules are moving
Thermal Energy
a transfer of energy from a higher temperature to a lower temperature.
thermal energy transfered
thermal energy transfered
thermal equilibrium is reached when the temperatures are equal.
Specific Heat Capacity
Different materials will warm up at different rates because each material has its own specific heat capacity.
A substance with a high heat capacity is a substance that requires a relative large quantity of heat to cause a small temperature change.
(water for example)
refers to the amount of heat required to cause a unit of mass (a gram or a kilogram) to change its temperature by 1 degree Celsius.
liquids expand more than solids
The wood dock will up heat slower than the sand under the same temperature of the sun because it has a higher specific heat capacity (1700 J/kg C)
"My feet feel better!"
The sand will heat up quicker than the wood dock because it has a lower specific heat capacity. (830 J/kg C) "Ouch! Hot!"
Thermal energy is transfered from a higher temperature to a lower temperature until thermal equilibrium is reached.
Full transcript