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How to Use a Light Board to Test Conductivity

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Part of the video series: How to Make a Light Board Science Project

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Summary: How to test electrical conductivity using a battery-driven light board in this free video on science project ideas.

Views: 909 | Tags: make, instructions, board, electronic, electronics, battery, batteries, charger, charging, light board, science projects

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About the Expert

Sean Graham Sean Graham as been teaching and living in Thailand for five years, but has been a frequent visitor for over 16 years. When he first came to Thailand to teach... read more

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Video Transcript

How to Use a Light Board to Test Conductivity

Hi. On behalf of expertvillage.com, my name is Sean Graham, sponsored by goturnkey.com. Okay, now we have everything wired up on the board, what we need to do now is to start connecting our wires. First we'll connect the wires to the light unit. You'll take the negative connection, push that through there, tighten it up. The last connection, okay this is a round connection, we just need to remove this, put this on top, screw it down, nice and tight, okay. Now these two, we don't have to do anything with this, these will be our conductors so we'll be dealing with those in a moment. But what we now need to do is take our negative clip, put that on to the negative. Then we'll take our positive clip, which we will then clip to the other side. Okay, clip that onto there, okay. Now what we need to do is to insert our battery and we're ready to go. Now, at this point we can show the students about conduct ability, things that conduct and do not. For instance, we can put a plastic bag maybe, down like this. Touch it with the two point, nothing. Nothing, so it doesn't conduct. Now, I'm sure I don't really need to show you this but, here we go. So we take a coin, put on the two points, and there you go. You have a presto you have light. So a coin is conductible. We take a pair of scissors, place them on, and again, and presto, there you have light. Kids are always very impressed on this. so there you go. That's a cheap and effective way of being able to teach about electrical current and conductible objects. It's very cheap to do as I said. And afterwards you can get the kids to decorate the board.

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