Conduction, Convection, and Radiation
Insulation
Preventing heat from flowing in or out of a material.
true
all atoms have thermal heat energy because the atoms or molecules that make matter are in constant motion
radiation
only way heat is transferred that can move through the relative emptiness of space
Name two examples of radiation
the sun on your skin, warmth of the fire
convection
the transfer of heat by the actual movement of warmed energy in a gas or liquid by movement of currents. (It can also happen in some solids, like sand)
conduction
the transfer of heat within a substance by direct contact
conduction
transfer of energy through matter using direct contact
convection
transfer of heat by physical movement of the heated substance itself (vertical movement)
conduction
transfer of heat from the Earth's surface to the Earth's atmosphere
radiation
transfer of heat from the Sun to the Earth's atmosphere
Material thats good insulator
warm clothing
Convection results from the movement of
warm fluids or gases
poor conductor
air
radiation
A person placing their cold hands over a warm fire
radiation
A person placing their hand over a hot burner
conduction
A pot sitting on a hot burner.
Heat energy can be transfered in three ways
Conduction, Convection, Radiation
What are the three main types of heat transfer?
Conduction, convection, radiation
Radiation
Angelina works at a restaurant. After the cooks get finished cooking the food they put it in a window where there is heating lamps above to keep it warm. This is an example of...
Convection
At the restaurant where Angelina works there is an oven that circulates the air inside to heat the food faster. This is an example of...
temperature
Average motion of the atoms and molecules that we sense
Conduction
Cynthia was making soup and left the spoon that she used to stir it in the pot while it was cooking. She went to stir it again and burnt herself on the spoon. This is an example of...
Conduction
Energy is passed from atom to atom through direct contact
Convection
Harry's family loved to grow fresh vegetables for their family to eat. During the summer Harry went into the green house and noticed the air seemed really warm inside but cooler toward the ground. This is an example of...
conduction, convection, radiation
Heat transfer types
Conduction
Henry and his friends were telling ghost stories by the campfire. Henry could feel heat as he put a pot of water on the portable stovetop that they had placed over the fire. The hot pot on the stove top is an example of...
convection
How the inside of a greenhouse works.
Radiation
In high school Julie liked to lie out in the sun in her backyard to get a tan. This is an example of...
Radiation
Jake went camping with some friends. While they were up in the mountains it started getting cold so they started the fire early. The heat energy that comes off of the fire is an example of...
Radiation
Jim's dad was grilling hot dogs for their big 4th of July party. When Jim walked outside he noticed the sun beaming down on the grill Jim said, "Boy, it sure is extra hot near the grill today Dad." The sun's beam hitting the grill is an example of...
Conduction
Kyla was skiing in the mountains with her family for spring break. As she was soaring down the ski slope she tripped and fell into the snow. She took her gloves off, picked up the snow in her hand and it started to melt. This is an example of...
Convection
Lisa was hungry when she came home from school and decided that she would like to make some macaroni. She heated up the water on the stove and noticed that it was circulating in the pan. This is an example of ...
radiation
Lying out in the sun to get a tan
convection
Macaroni rising and falling in a pot of boiling water
Convection
Method of heat transfer of thermal energy by fluid circulation of the movement of atoms
Conduction
Molecules of energy travel through a solid.
conduction
Picking up a hot cup of coffee
convection
Putting your wet shoes on a floor vent to dry them faster
Conduction
Sammy wasn't feeling well so her mom made chicken noodle soup. Mom put ice cubes in the soup to cool it. Sammy then took a spoonful of soup and carefully brought it to her lips. The soup touching Sammy's lips is an example of...
Kinetic Energy
The energy of a motion.
Radiation
The transfer of energy by electromagnetic waves.
Why are gases poor conductors
Their particals are so far apart
heat energy
Total average kinetic energy, the energy that flows due to temperature differences;always transferred from warmer to cooler substances
conduction
Touching a metal spoon that is sitting in a pot of boiling water
Convection
Transfer of energy by the flow of a liquid or a gas.
Radiation
Transfer of heat through electromagnetic radiations
conduction
Using a heating blanket to get warm
Radiation
While at the nail salon Jenifer noticed that some of the girls use a UV light to dry a special kind of gel nail. This is an example of...
Name two examples of conduction
Your hand touching a hot dish, You burn your hand
Name two examples of convection
a heater, boiling water
radiation
causes some of the Earth's heat to be lost back into space
Material thats a good conductor
cooking Pans
why do different metals conduct heat different rates
different materials have different conductivites
Conduction occurs between objects in
direct contact
radiation
electromagnetic waves that directly transport energy through space;sunlight is a form of this that brings heat to our planet without the aid of anything
conduction
energy is transferred by direct contact
radiation
energy is transferred by electromagnetic radiation
convection
energy is transferred by the mass motion of molecules
Radiation
energy that is transferred as electromagnetic waves, such as visible light and infrared waves
Energy transferred through partical collisions
heat
convection
heat transfer by the movement of mass from one place to another;can take place only in liquids and gases
Conduction is...
heat transfer through contact
What makes a substance a good or poor conductor depends in part on
how much energy is required to change the temperature of the substance by certain amount
convection
main driving force for the transfer of heat between air masses
Insulator
material that transfers energy poorly
Conductor
material which energy can be easily transferred as heat
good conductor
metal
Convection
movement of matter due to differences in density that are caused by temp. variations can result in transfer of energy as heat
convection
moves about the planet heat gained by conduction and radiation from the sun;heating of the Earth isn't even
Radiation does not require
physical contact
conduction and convection
require motion of molecules like air or water to move heat