Concept Map + 10 things to remember when dealing with electricity

Feb,18,2010 Friday
First, let's talk about concept map. According to Mr. Chung's words, concept map can be classifies as a form of notes that help students to review. on Friday, we are asking to create a concept map in a group of four without without any forms of written or verbal communication..and at last, Mr.Chung gave us a concept map he created. ........he out smart us.
here is what our concept map look like :

  10 thing about Electricity:

1. Current
2.Voltage
3. Resistance
4. Kirchhoff's law
5.power
6.series and parallel circuits
7.work is done is J
8. Conventional Current and Electron flow
9.Ohm's law
10. define the term: "electricity current"

Ohm vs. Kirchoff

10, Feb,2010

Ohm's law stated that the amount of current flowing through a resistor varies directly as the amount of potential difference applied across the resistor as long as other variables stays the same.

A simple diagram about Ohm's law:

               Kirchhoff's laws, however, are about the electric circuits. the Kirchhoff's current law stated the total current into a junction point of a circuit equals to the total current that flows out the same point.

              In the mean time, the Kirchhoff's voltage law stated that the total of all electrical potential decreases in any  complete circuits loop is equal to any potential increases in that circuit loop.

My Favourite Roller Coaster

09, Feb, 2010
I pick a 3rd prize Junior roller coaster as my favourite roller coaster, because, it is my favourite roller coaster! i just happened to be love it's style, backgrounds and creativity!

Here is what it is look like :

even thought it is my favourite roller coaster, I really doubted that if it is working or not........

From battery to Circuit

      08, Feb. 2011
      According to Mr. Chung's handouts, the electric currents produced by batteries are direct currents (DC).the electrons flows from negative terminal to positive terminal within the circuits. the circuits drives electric currents to loads and provide power or energy to the loads. then the electric currents return along the conductors back to the source(battery) to finish the circuit.

Some Diagrams:

Also, the speed of eclectic current is much quicker than the individual electrons because of the collisions between the electrons within the metal wires that push the electrons away form one atom and collide with  the next.

Energy Ball Activity

6, February, 2010
Sunday


    My somewhat handsome young physic teacher, Mr. Chung made us did some activities about electricity on Friday. they are very simple activities, but  very interesting at the mean time. the activities were done with  some "Energy Balls",  basically they are some type of ping-pang ball that will light up if you put both of your fingers on the metal chips on it's surface. overall, the activities were fun and we learned about two types of electricity circuit , series circuit and parallel circuit. Series circuit are circuit that the lines are connected in a single path and parallel circuit are circuits that the lines are side by side. Both circuits are useful in our daily life. For example, parallel circuit are used in the switches in our homes  because of it's ability to switch between the lights,  the wires in our community are built like a series circuit due to safety issues.  Electricity currents pass through these lines, which are our bodies in Friday's activities.

here is some diagrams of the circuits                   Parallel Circuit

                                                   Series circuit

physics is really an interesting subject, isn't?