Science Buddies: "Ask an Expert"

Posted: **Tue Dec 03, 2013 2:45 pm**

Hi!
I'm currently planning my science research report. I've already received my research, but I cannot interpret what it means.
Could someone possibly explain what the Seebeck effect is in 8th grade terminology?

Posted: **Tue Dec 03, 2013 3:43 pm**

Hello and welcome to the forums:

I used a search engine to look for "Seebeck Effect", and found many definitions that I think you can understand. One I found here: http://searchnetworking.techtarget.com/ ... eck-effect says:

(In) the Seebeck effect .. a temperature difference between two (different) conductors ... produces a voltage difference between them. When heat is applied to one of the two conductors, heated electrons flow toward the cooler one. If the pair is connected through an electrical circuit, direct current (DC) flows through that circuit.

Also, look here: http://www.howstuffworks.com/thermoelectricity-info.htm

Not all the electrons inside a metal are bound to specific atoms; some are free to move about. These free electrons behave like a gas. The extent of diffusion of the "electron gases" depends on the temperature. If the two junctions are at different temperatures, a potential difference will exist between the junctions and a current will flow.

Let us know what you're having trouble with and we'll try and help.
Keith

Posted: **Mon Jan 06, 2014 1:07 pm**

Hi i'm just starting this project and i was wondering what the independent variables are My project is due in 2-3 weeks and i'm really stuck Plz help

Posted: **Mon Jan 06, 2014 3:00 pm**

Hello:

I'm assuming that you're doing this project: https://www.sciencebuddies.org/science- ... ml#summary. Is this correct?

Could you please what you will measure with the thermocouple? If you can do that, we can help with the variables. You should also look here: https://www.sciencebuddies.org/science- ... bles.shtml

Good luck!
Keith

Science Buddies: "Ask an Expert"

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