Unit 8I Heating and cooling

Lesson 4

Expanding and contracting

Aim: What happens when solids and fluids heat up.

Key words: Expansion, contraction, density.

10 min: Starter SATs question

A SATs question to recap from the previous lesson (level 4).

40 min - Main Activity Practicals.

Explain your observations of what happens when solids and fluids are heated.

10 min - Plenary Going over the answers.

Use the key words and particle model to get a Level 6.

Unit 8I Heating and cooling

Lesson 3.

Conductors and insulators

Aim: What materials are good conductors and what materials are good insulators?

10 min Starter: Recap on last lesson – where will the heat go problem and sorting materials into conductors and insulators – recap from key stage 2.
Some materials let heat pass through them easily. They are called Thermal conductors. Metals are really good Thermal conductors, they usually feel cold because heat passes through them quickly.
Some materials are Thermal insulators (plastic, cork, rubber, air, wood etc). They are good at keeping heat out as well as in.

Grading

Level 3: Can sort out conductors and insulators and say where we use them.

35 min Main Activity: Demo practical and write up –
Lesson A. A brief demonstration showing that some materials (metals) are better conductors than others. Hot wax and drawing pin experiment. Students write up experiment and answer some questions on conductors and insulators.
Lesson B. Students conduct the heat conduction experiment themselves.

Lesson C. Mummy's tomb experiment.

A virtual version of today's experiment can be found here...

http://learningzone.coruseducation.com/VAC/heat/index.htm

Grading
Question 1 Level 3
Question 2 Level 4
Question 3 Level 5
Question 4 Level 5
Question 5 Level 6

10 min Plenary and grading for the lesson: A relevant SATs question based on today’s lesson.

Unit 8I Heating and cooling Lesson 1

Unit 8I Heating & Cooling Lesson plans

Lesson 1.

What’s the temperature?

Aim: What is the most accurate thermometer?

10 Minutes: Starter
Quick quiz: Matching boiling points with materials.

30 Minutes Main acitvity: Which is the most accurate thermometer?

Thermometers are important because we need to record temperatures accurately. Students should be able to think of several occasions when it is important to record temperatures accurately.

Your task is to record the temperature of five materials using four different types of thermometer. Mr C has already measured the temperature of most* of the materials using a very well calibrated thermometer that is stored in the prep room, you must decide which thermometer is the most accurate for use in future experiments during the unit heating and cooling.

* aside from the students own bodies which should be 37 degrees celsius.

Mr C and Mrs Groves* will help you to draw a table to record your results.

* Track 1 & 2 only.

Once you have recorded your results you should write a conclusion to say what you have found out. It must answer the following...

1. Which thermometer would you recommend for use in the rest of the unit?

2. Why? Key word: accuracy

Extension...

3. Was the experiment fair? Key words: dependent + independent variables.

4. Explain your answer?

15 Minutes Plenary: SATs style question on Thermometers.

Students complete a relevant SATs style question.

National curriculum links
Ks 3; Sc 4; 5d Sc 1. 2 f, g, i, j, k o, p

Grading

Level 4
I know that heat is a type of energy
I know that temperature is a measure of amount of heat energy