Embedded Files
Introduction
Introduction
Understanding how heat is transferred has allowed humans to build the steam engines that powered the industrial revolution, put humans on the moon and keep the computer chip in your phone cool enough to keep working. Find out how it works:
Task 1: Know
Task 1: Know
Task 1: Use look cover write / check and quizlet to learn to key words and ideas in this topic.
Learn
Learn
Task 2: Heating and cooling introduction
Task 2: Heating and cooling introduction
Task 2b: Copy and complete the diagram by
naming the processes in the boxes in the top and bottom rows.
drawing particle diagrams to represent the states of matter in the middle row of boxes
Task 2c: make notes that:
Define temperature
Define thermal energy
List and define the three ways heat can be transferred
Understanding check:
Mr Seaman held his hand 30cm above a lit candle. His hand got hot. Name the process that transferred most of the energy to Mr Seaman's hand.
Convection - because the heat is travelling through a fluid (liquid or gas)
Name the process transfers energy from the sun to your skin if you are sunbathing.
Radiation - because the heat is travelling through the vacuum of space
Mr Stonehill put one end of a metal rod in a fire and held on to the other end. Eventually he dropped the rod because it got to hot. Name the process transferred the heat through the rod.
Conduction - because the heat is travelling through a solid
Task 3: Conduction
Task 3: Conduction
Task 3b: Make notes that:
Define conductor
Define insulator
Explain why metals are particularly good at conducting thermal energy
Task 3c: Copy and complete the paragraph using the words at the bottom
Task 3d: Complete the exam question and mark your answers
Task 4: Convection
Task 4: Convection
Task 4c: Watch the experiments on the video.
If you have the equipment give them a try at home - make sure an adult is supervising you.
Task 4d: For the demonstration:
Describe what happened in the demonstration.
What did we do?
What did you see?
Use conduction to explain what happened
We saw…
This means that…
This happened because …..
OPTIONAL under adult supervision make a convection spinner. Describe and explain your findings.
Instructions:
Print out or draw a spiral
Cut along the red line
Attach a piece of thread to the centre of the spiral using sticky tape or set up as shown in the video
CAUTION:
Put the spinner above a lit tea light - MAKE SURE YOU DON'T PUT IT IN THE FLAME!
Task 5: Radiation
Task 5: Radiation
Task 5c: Make notes that:
Explain why conduction and convection are impossible in space
Describe the process of infrared radiation
Read the practical instructions on slide 16 and view the example results on slide 17. Write a conclusion for the experiment. Including the following:
Give the colour of the can that cooled down the quickest and therefore radiated the most infrared radiation.
Give the colour of the can that cooled down the slowest and therefore radiated the least infrared radiation.
Explain why this happened.
Task 5d: Complete the progress quiz
Task 6: Heating and cooling curves
Task 6: Heating and cooling curves
Task 6c: Copy the graph below (cooling curve) and explain why there is a flat section where the temperature stays constant
Task 6d: Copy the graph below (heating curve) and explain why there are flat sections where the temperature stays constant
Task 7: Reducing energy loss
Task 7: Reducing energy loss
Task 7b: Make notes that:
Describe where most energy is lost from in a house
Explain how loft insulation reduces energy loss
Explain how cavity wall insulation reduces energy loss
Explain how putting aluminium foil behind a radiation reduces energy loss
Explain how double glazing reduces energy loss
Explain how a vacuum flask reduces conduction, convection and radiation
Task 8: Summary
Task 8: Summary
Task 8a: Watch the video
Task 8b: Complete the seneca learning unit:
Task 8c: Make a mind map or single page revision summary of this topic and add it to your revision folder
Task 9: Check
Task 9: Check
Complete the quiz to make sure you understand this unit.
Extend
Extend
Complete the exam questions and check your answers
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