Monday, March 4, 2013

Electricity & Magnets

Dear Viewers,

   In class we are learning about Electricity & Magnets. I really am interested in magnets I really want to learn more about both Electricity & Magnets. I have learn a lot of things already in class and I am learn more things every single day. (All light blue text can be found in vocabulary resource.)

   Electricity has a lot to do with this unit on Electricity & Magnets. I have learned that the way that you measure the amount of electricity a item has is measured in volts.    The electricity in a item is the amount of voltage it has. I you were to charge your phone or computer you would be using electric charge to charge it. In this website online that I found it tells the way you charge your electrical devices. Circuit run from electricity, and usually the power source is a battery.  When you flip the switch to a circuit you are running a current through the wire. There are three main parts in a circuit switch, battery, and light bulb. The switch for it is so the circuit can be complete, when the circuit is closed the flow of electricity goes all around the wire and this causes the light bulb to turn on. When the circuit is opened there is really not a flow of electricity, nothing happens. A series circuit can turn on a couple of light bulbs in a row.  A parallel circuit has wire in a parallel line on each side of the battery that flows to the battery. Brain Pop resources I used: Electricity  and Electric Circuits. 
A electric circuit.
A parallel circuit,  

 Magnets help us with our every day lives and are a huge part of this unit. I think that these are really fascinating to play around with. They are cool because they only attract with other magnets or pieces of steel, copper, bronze, or iron. They have more metals they attract too! The magnets have two sides, the North Pole and the South Pole. There are many items you can find in your home that magnets are attracted to. Magnets do two things repulsion and polarity.  Repulsion is what happens when two magnets don't go towards each other. When the same poles are facing towards each other they are repulsion and do not attract. Polarity is when the magnets are attracted to each other. This happens  when the opposite poles are facing each other. For Example is the North and North poles were facing each other it would be repulsion. And if the South and North poles were facing each other they are polarity. Outside you can find rocks that is magnetic, Magnetite is the rock that can be attracted to a magnet. In this article it tells about this rock and how people discovered magnetism. For this I used Brain Pop video: Magnetism
 An example of  the ways magnets attract. 
Magnet attracting or pulling together.

     


Two magnets repelling each other.
 Electromagnets are magnets charged with electricity. You can make a electromagnet by charging a magnet by using a circuit and a magnet. All you do is wrap a wire from a circuit around a magnet and let the current go around, and around, and around, and around until it goes all the way through the circuit and then this happens again and again until the magnet becomes an electromagnet. The magnets then produce a bunch of force way more force than a regular, plain magnet. When you make an electric magnet you don't exactly need a iron nail you can make a magnet by doing this. If you want to charge a magnet you use a magnet. This will enable you to charge an magnet. So all you need is a nail or a magnet, a battery or a power source, and a switch.
The elements of an electromagnet.
Another example of an electromagnet. 

      


No comments:

Post a Comment