Keeping Track Of Heat

e-workbook

Author, videos and pictures: Simon Kleefeldt
Illustrations, editing and translation: Max Schall

Published by:
Workgroup Bohrmann-Linde, Department of Chemistry Didactics (Tübingen and Wuppertal)

© 2019

Front cover illustration: Nico Meuter

Keeping Track Of Heat

e-workbook

Author, videos and pictures: Simon Kleefeldt
Illustrations, editing and translation: Max Schall

Published by:
Workgroup Bohrmann-Linde, Department of Chemistry Didactics (Tübingen and Wuppertal)

© 2019

No part of this e-book may be reproduced or transmitted in any form or by any means, without permission from the publisher.

Front cover illustration: Nico Meuter

3

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How to work with this e-book

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Table of Contents

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You will find texts and tasks in this ebook, with white boxes for student answers, pictures, and videos. Of course, you might as well take the teachers' version and just delete parts of the answers in order to give more assistance and to have a closer guidance through the tool.

If needed, BookCreator features a reading-out function, so that students can easily listen to the pronunciation of words they haven't learnt yet.

Most of the rather tricky English words will have a translation at the bottom of the page, however there is a comprehensive vocabulary list at the end of the book.

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1. Great Colours!

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2. It's getting cold here...

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3. Thieves and Spies

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4. Physics for your Eyes: see, shine and flow

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5. Everyday Tech

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6. Chemistry and Environment

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Chemistry Vocabulary List

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4

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Table of Contents

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1. Great Colours!

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|p. 6-9

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2. It's getting cold here...

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|p. 10-15

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3. Thieves and Spies

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|p. 16-27

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4. Physics for your Eyes: see, shine and flow

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|p. 28-31

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5. Everyday Tech

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|p. 32-39

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6. Chemistry and Environment

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|p. 40-49

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Chemistry Vocabulary List

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|p. 50-53

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5

1

Great Colours!

Research, building restoration, hunting, military and firefighting are just a few of the areas that rely on thermal imaging camera¹.
The thermograms ² also play a vital role in scientific experiments, as they give new insight to aspects of processes humans can not observe with their eyes. Go try it yourself!


• 1.1 What physical quantity³ can be depicted with a thermal imaging camera? How is this physical quantity visualised?

• 1.2 Identify which objects the thermal imaging camera can register and explain why some things can or can not be registered. To show this, insert pictures of objects taken by a thermal imaging camera and a normal camera.

• 1.3 Experiment with the thermal imaging camera and examine the colour in the thermogram. Explain the meaning of the colours depicted.


After having carried out your first experiments with the thermal imaging camera, you want to take a look at the created thermogramms (the images taken by the thermal imaging camera). You want to know what influences the objects' colouring in the thermogramm.

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¹ thermal imaging camera - Wärmebildkamera
² thermogram - Thermogramm (Aufnahme einer Wärmebildkamera)
³ physical quantity - physikalische Größe

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Experiment
Material: thermal imaging camera, water (hot, cold and room-temperature), thermos, cups (3 different colours and three transparent ones)
Preparations: Set up the camera and line up the cups.
Procedure: Develop experiments that will help you answer the questions below.

• 1.4 Are there factors or properties¹ of the objects influencing the colouring in the thermogram? For example, consider factors like surface texture².

• 1.5 Is there a correlation³ between the object's visible colour and its colouring in the thermogram? Take pictures with a normal camera and a thermal camera to support your answer.

• 1.6 Open the thermal imaging camera's app and search for other colour ranges in the bottom menu bar. The settings will influence the colouring of the objects, test them.

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¹ property - Eigenschaft
² texture - Beschaffenheit
³ correlation - Zusammenhang

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It's getting cold here...

Imagine you are at the pool in the blazing¹ sun. It's 30 degrees in the shade and you are drenched² in sweat. Interestingly, your neighbour's dog doesn't sweat


• 2.1. Why do people sweat? Develop a theory and try to verify it with a suitable experiment.


Climbing out of the pool, still wet, you decide to stay there and enjoy the sun. After some time, you even start to feel cold.


• 2.2. Why are you starting to feel cold on a bright sunny day like this? Try to explain briefly.

• 2.3. What would happen if human beings could sweat nail polish remover (acetone)? Test this on a small spot on you hand and write down your perceived results.

• 2.4. Dogs pant³ instead of sweating. Imitate the panting of a dog and make a video using the thermal imaging camera.

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¹ blazing - brennend, lodernd
² drenched - durchnässt, klitschnass
³ to pant - hecheln