Today I am… learning about the different forms of heat transfer
So I can… understand how heat is transferred between objects
I’ll know I have it when… I can explain the three types of heat transfer
The estimated time to complete this lesson is 2 hours
However, if each laboratory activity is completed it will take a bit longer
You should be able to answer these questions:
Can I give examples of the three forms of heat transfer?
Do I know the states of matter associated with each form of heat transfer?
Can I explain how the transfer of heat occurs?
Last lesson we learned about matter and changes of state. Try to answer these questions before we begin today:
What are the five changes of state?
Changes of state happen when heat is either _________ or __________
Remember:
Heat is a form of energy that is transferred between objects
Heat energy always moves from an object with high heat energy to an object with low heat energy
Heat transfer is an important part of our everyday lives. Watch this video with Bill Nye to find out some of the examples of heat transfer that we encounter in our everyday lives.
What are some other examples that you can think of? Write down your examples!
This is the transfer of heat energy by direct contact
As the particles in the solid gain kinetic energy, they vibrate faster and bump the other particles which transfers the energy through the solid
Remember: heat transfers from an object with high heat energy to an object with low heat energy
When the temperature is equal, conduction stops
Conduction can occur in solids, liquids and gases but solids are the best heat conductors because their particles are close together
This is the transfer of heat in fluids
A fluid can be a gas or a liquid
As the fluid gains energy from the heat, it moves away from the heat source
When the fluids are heated, they become less dense (less compacted)
When the fluid becomes less dense, it rises
Convection currents are found in Earth’s atmosphere and oceans
The land heats up faster than the sea during the day
This is the transfer of energy through electromagnetic waves, like the ones from the sun
The waves carry the heat energy away from the heat source
Energy transferred by radiation is called radiant energy
Radiant energy does not need matter to travel so it can travel through a vacuum like space where there are no particles
What kind of heat transfer would a cold blooded animal like a snake use to be able to become warm enough to move?
Watch the video to find the answer!
To enhance your knowledge of the three types of heat transfer, complete the laboratory activities below!
Each of the images below represent one of the three forms of heat transfer. Your job is to identify the type of heat transfer in each of the images. You can use the document to write each item into the table or write your answers into a notebook or on a piece of paper.
Questions to think about:
Were there more than one method of heat transfer occurring in any of the photos?
What was the hardest and easiest photo to determine the method of heat transfer? Why?
1. Toaster
2. Fire
3. Iron
4. Oven
5. Barbecue
6. Hair Dryer
7. Sun
8. Light Bulb
9. Heater
10. Fridge
11. Radiator
12. Holding Snow
Radiation
Radiation
Conduction
Radiation
Radiation
Convection
Radiation
Radiation
Radiation
Convection
Convection
Conduction
Now that you are an expert on heat transfer, you are going to create a poster to highlight one of the three types of heat transfer.
This should be the size of a sheet of paper.
You can decide to draw your poster, create it on the computer, cut out letters, words or pictures from a magazine or anything else you would like.
You may choose one of the images from the Heat Transfer Detective activity or a different object to draw and explain how heat transfer is occurring. Make sure to draw the transfer of heat and label your poster with the correct form of heat transfer. You should also include at least two other examples of the type of heat transfer you chose. These examples should be different from your drawing. Make sure you make your poster colourful and eye catching! Have fun and be creative!
To make sure that you have a good understanding of the three different types of heat transfer and the different objects and situations they are found in, complete the assignment!
Part one is asking you to compare and contrast the three types of heat transfer. You can use the Venn diagram provided or write your answers in a different format.
Part two gives a variety of different situations in which heat transfer is occurring. Your job is to correctly identify the form of heat transfer.
Make sure you can answer these questions so you know you have a good understanding of the material. Try to answer these questions before moving onto the next lesson:
What are the three types of heat transfer?
What is an example of each of the three types of heat transfer?
What state of matter does each type of heat transfer use?
Take the quiz to make sure you are on the right track!
ELearnin. (2012, October 12). Conduction of Heat - Elementary Science. https://www.youtube.com/watch?v=w_IbPRNZ6ho
Expertmathtutor. (2014, January 5). Physics - Energy - Heat Transfer - Convection. https://www.youtube.com/watch?v=VxGIiOTuAIs
Haysom, J., & Bowen, M. (2010). Predict, Observe, Explain: Activities Enhancing Scientific Understanding. Arlington, VA: NSTA Press.
MooMoo Math and Science. (2019, November 25). Conduction - Convection - Radiation - Heat Transfer. https://www.youtube.com/watch?v=HpCvWuvCUoA
Nelson Thomas Learning. (1999). Nelson Science & Technology 7.
StephMacabre. (2014, March 19). Bill Nye Heat. https://www.youtube.com/watch?v=WMYb5684Kp0