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Event date: 
Friday, 26 March, 2021 - 17:00 to Sunday, 4 April, 2021 - 17:00
Event Location: 
Online

About this Event

Welcome to the “Lot and Lots of Light Bulbs” online workshop, aimed at children aged 4 – 7+.

In this interactive workshop we will talk about where the energy which powers our lights comes from, and why some light bulbs waste lots of energy. We'll explain different materials used to make light bulbs and think about which ones waste least energy and why.

The workshop consists of 6 short videos, each of which ends with a small activity. It is intended to be enjoyed by children with adult supervision. You can watch all of the videos in quick succession or spread them out over more time if you prefer.

Videos

The six videos with very brief descriptions are below. Each video ends with a question to think about or an activity to do before the start of the next video.

Jump to: Scene 1 | Scene 2 | Scene 3 | Scene 4 | Scene 5 | Scene 6

For grownups:

You can learn more about LEDs and other related technologies on our website: https://www.gan.msm.cam.ac.uk/resources.

There are videos on our youtube site (https://www.youtube.com/channel/UClpTu_hm2DUPIg_-cmXs8ow) about what’s “Inside an LED” (long version: https://www.youtube.com/watch?v=W1FFh--7d9I, short version: https://www.youtube.com/watch?v=rdlivdTaOi4&t=1s).

We also have an Android App available for free download from Google Play, which will teach you more about the science behind LEDs and their role in energy saving: (https://play.google.com/store/apps/details?id=cambridge.materials.galliumnitride.app.ledlab&hl=en_GB&gl=US)


Section 1: Introduction

We welcome you to our workshop and ask some questions to get you thinking about the lightbulbs in your house.

You can expand this video to full screen - mouse-over the video when playing to reveal the menu bar.

[Other video formats/qualities are available here: https://sms.cam.ac.uk/media/3465212]

Question: How many light bulbs are there in your house?

When you are ready, start the next video.

 

Section 2: What do light bulbs need to work?

We talk about the fact that light bulbs need electricity to work, and start to think about where electricity comes from.

[Other video formats/qualities are available here: https://sms.cam.ac.uk/media/3465236]

Questions: Where do you think energy comes from? How do think you it is generated?

When you are ready, start the next video.

 

Section 3: Where does electricity come from?

We demonstrate about different ways of generating electricity and talk about why some of them are kinder to our planet than others.

[Other video formats/qualities are available here: https://sms.cam.ac.uk/media/3465277]

Question: How many different types of lightbulb can you find around your house?

When you are ready, start the next video.

 

Section 4: How much electricity do light bulbs use?

We look at different light bulbs and investigate how much electricity they use.

[Other video formats/qualities are available here: https://sms.cam.ac.uk/media/3465340]

Questions: Which light bulb uses the most power? Which light bulb uses the least power?

When you are ready, start the next video.

 

Section 5: Where does the wasted energy go?

We investigate why some light bulbs use more electricity than others and explore where the wasted energy goes.

[Other video formats/qualities are available here: https://sms.cam.ac.uk/media/3465360]

Question: Ask your adult, if there are any warm chargers or other devices which waste energy around your house?

When you are ready, start the next video.

 

Section 6: Investigate wasted energy yourself!

In this video, we show you how to make a convection spinner toy so that you can investigate where energy is being wasted in your home. If you’re in the UK and you requested us to send you a kit when you booked the workshop, you should have received one by post. Otherwise, you can print out a convection spinner template here: https://www.gan.msm.cam.ac.uk/files/convection_spirals.pdf

You will also need:

  • A piece of thread
  • A pair scissors
  • A needle
  • Some colouring pens or pencils

[Other video formats/qualities are available here: https://sms.cam.ac.uk/media/3465384]