IS ELECTRICITY SAFE?
Background
Electricity is measured in units of volts, amps or watts. The higher the voltage, the more dangerous the electricity is.Materials Needed
1 breadboard2 batteries in holders
2 light bulbs
2 wires with washers
push pins
Procedure
1. Build the simple circuit with a single battery. Light the lamp.2. Now replace the single battery by 2 batteries with both + signs in the same direction. What happens?
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3. Now reverse one of the batteries so that the two + signs are together. What happens? Why?
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4. What do you think would happen if you used 4 batteries to light one lamp?
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Try it with your neighbor.
Questions
Each D-Cell is 1.5 volts. How many volts do two D-Cells have?_______What voltage is used in your house and school? _______
THE VOLTAGE IN YOUR HOUSE AND SCHOOL IS A LOT HIGHER THAN WE USE IN THESE EXPERIMENTS. NEVER TRY THESE THINGS USING ELECTRICITY FROM A WALL OUTLET!!
Posted by Jay Roberts at 04:20 AM | Permalink
