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Conduction, Convection,
and Radiation
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Your Energy Assignment:• Create a google document in your science folder
• Name the Document, Conduction,Convection,Radiation (add your
first and last name, and period)-share it with Mrs. Woulf
• Read all slides in this PowerPoint and take Cornell notes in the
google document
• Your Essential Question is:
• What is conduction, convection, and radiation?
• When you’re finished with the notes, write your summary. Don’t
forget 5 Key ideas in 5 sentences. Add a topic sentence and a good
ending sentence. Your paragraph should have a minimum of 7-10
sentences.
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Heat Energy
• Energy is what makes things happen.
• All materials are made of tiny particles
called molecules.
• Molecules are always moving.
• The movement creates heat.
• The amount of heat depends on how fast
the molecules move.
• As the molecules move faster, they take up
more space and make the object expand.
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Heat Transfer
• Heat can be transferred from one
object to another in 3 different ways:
–Conduction
–Convection
–Radiation
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Conduction• Heat traveling through solids.
• Two objects must touch or have direct contact.
• As molecules heat up they move faster and expand.
• When you touch one hot surface to another, the hot molecules bump into the other molecules which makes them start to move faster.
• An object gets hotter from the movement of the molecules.
• All solid objects conduct heat, some are better conductor than others.
• Metals are good conductors.
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Examples of Conduction
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Convection
• Heat traveling through liquids or gases
• As molecules heat up, the heat makes the
molecules move more rapidly and expand.
• Creates currents in liquids or gasses – hot air
rises and cold air sinks.
• Uneven heating of our ocean creates ocean
currents.
• Uneven heating of our atmosphere produces
huge convection wind currents.
• Scientists use global and local wind patterns to
predict weather.
![Page 8: Conduction, Convection, & Radiation · • Name the Document, Conduction,Convection,Radiation (add your first and last name, and period)-share it with Mrs. Woulf • Read all slides](https://reader031.vdocument.in/reader031/viewer/2022040104/5e881287a304fa0d04635aec/html5/thumbnails/8.jpg)
Examples of Convection
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Radiation• Release of invisible heat energy waves
from the sun or fire.
• No movement of molecules to transfer heat.
• Feel warm without touch – heat radiates.
• Radiators got their name from this type of heat.
• When the radiant energy from the sun hits the earth, the earth soaks up the energy and changes it into heat.
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Examples of Radiation
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Balance• Whenever a hot object is placed near a
cold object, the hot object will transfer heat to the cold object until they reach a state of balance.
• Balance happens when the temperatures of both objects are the same.
• The fast moving molecules mix with the slow moving molecules until they are all mixed and balanced.
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When you’re finished with the Cornell Notes,
Create a flip book on Conduction,Convection and
Radiation
• Use a piece of notebook paper, and follow
the directions on the following slides.
Keep the flip book to hand in on Thursday.
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Fold paper in half length-wise
Cut on dotted lines as shown
FOLD
CUTCUT
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Fold your paper back in half
with the 3 flaps that you cut on top
Write in the following words
CONDUCTION CONVECTION RADIATION
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On the inside of each flap, you
will write the definition of each
word and draw an example of
each word