Heating+fluids

8I Heat transfer

=**Heating Fluids**=

Recall which substances heat can travel through by convection. Describe what happens to the particles in a fluid when it is heated. Describe how a convection current forms when part of a fluid is heated. Explain how a convection current forms when part of a fluid is cooled.
 * Objectives (what you will learn this lesson)**


 * Starter**
 * Complete homework
 * If particles in a solid vibrate more when heated do particles in liquids and gases behave in the same way or differently? Discuss your ideas in groups.

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 * Activities**
 * 1) Heating solids, liquids and gases - use the animation below to help you find out what is happening in each material.
 * 1) What is happening to the potassium permanganate crystals in the beaker of water? Look at the effect of heat by leaving one beaker alone and gently heating the edge of a second with a small Bunsen flame. Guidance.
 * 1) Look at the animation below to help you explain what is happening
 * 1) Explain convection in fluids by completing the card sort. Stick the completed card sort into your book in the correct order.
 * 1) Complete Q1-2 from p124-5 of Exploring Science 8
 * 1) Empty tea out of a tea bag and turn it into an empty cylinder. Put the cylinder on end of a safety mat and light the top with a wooden splint. Watch what happens and try to explain it using your understanding of particles, heat energy and convection.
 * 1) Complete Q3-6 from p124-5 of Exploring Science 8
 * 1) Complete the worksheet on convection currents

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 * 1) Where do we see natural convection currents and what do they cause?
 * 1) Extension: Help to construct an air balloon - use the instructions from home training tools

Review completed classwork / key term quiz
 * Summary**

Download and complete the gapfill on. Once completed print it off and stick it into your exercise book. Alternatively you can copy and complete it in your exercise book if you have a problem printing.
 * Homework**