What is electricity? Electricity is the flow of electrons from an energy source to a another. Electrons flow from the negative to positive because they are negatively charged. When the electrons reach a resistor they slow down and produce two things: light and heat. Some objects allow electricity to flow through they are called conductors. The ones that don't allow electricity to flow through are called insulators. What is a circuit? A circuit is a flow of electricity in a circle. A circuit won't work if it is an open circuit which means that the electricity wont go in a complete circle because it isn't connected in one place. that will keep the electrons from arriving and leaving their destination because they always have to arrive and leave right away. There are two types of circuits: series and parallel. A series circuit gives the electrons multiple paths they can take, so in a series circuit a light bulb goes out the electricity continues to flow to the other bulbs. In a parallel circuit the electrons have only one path so if one light bulb goes out the electrons can't complete their path so all the light bulbs go out. What is a battery? A battery is a box that produces energy when it is placed in a closed circuit. Inside the battery a chemical reaction takes place to create the flow of electrons. The reaction takes place between the anode, cathode and the electrolyte. When the anode and cathode is used up the battery can't produce energy and the battery is considered dead.
While conducting this experiment, here is a list of some of the positive results and negative problems that I saw:
The bulb flickered whenever the table was bumped because the wire stopped and started touching the battery.
The bulb went out whenever the wire was bumped doing the experiment, to fix it you adjusted the wire.
Whenever the bulb went out we restarted the timer.
The bulb which used the wire of gage of 24 feels warmer from about an inch away.
For the first try we used one battery, then decided to add a second and we did not count this trial.
For the first try we set the timer for three minuets.
The bulb holder kept tipping over and we had to tape it down.
The thicker wire (lower gauge) needed to be twisted to fit into the holders. Sometimes strands stuck out.
Our 14 gauge wire was silver in colour, I learned that this wire is made of aluminum. All the other wires are made of copper.
My brother and sisters loved to watch these experiments :)
The warmest bulb with the was the wire with the gage of 18. This was the thickest wire made of copper. The 14 gauge wire was cooler, but was made of aluminum. I conclude that electrons flow fastest through a lower gauge copper wire.
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