SPM FIZIK BAB 8 : ELEKTRONIK

NOTA FIZIK SPM
BAB 8 : ELEKTRONIK (VERSI BAHASA MELAYU)

8.1 : OSILOSKOP SINAR KATOD

8.2 : DIOD SEMIKONDUKTOR

8.3 : TRANSISTOR

8.4 : GET LOGIK

FUN with PEKA FORM 4 ... relationship between pressure and density ..

  assalamualaikum wbt ...

It is an exciting moment when my students keep trying and trying to accomplish their mission to proof the hypothesis in the experiment.

On 4^th July 2012, the experiment was handling as to investigate the relationship between the pressure and density of liquid besides exposing them with new apparatus called manometer and thistle funnel.

As the density of a liquid increase then the pressure of a liquid also increase.

The students have been provided 3 solutions which is alcohol solution, salt solution and distilled water. To begin with, which one of those has higher density ???

 They already know that the highest density is salt solution. However, between alcohol and distilled water which one has higher density? Why? Lots of answer came out  ... and most of them keep saying alcohol is denser.

Here’s the way to prove ..

Density is defined as mass per unit volume

So, i let them to measure the mass of both solutions and calculate the density...

so, which one...??

Water is denser than alcohol because the space between water molecules is less than the space between alcohol molecules. Hence, there is more matter per unit volume of water than per unit volume of alcohol. Since a unit volume of water contains more matter than an identical volume of alcohol, its density is greater.

At the beginning of the experiment, they quite frustrated as the yellow liquid in the manometer didn’t rise up...they setup again the apparatus and manage the rubber tube that connected the thistle funnel and the manometer in the other way... yesss!!!now it rise...

They were so happy, but then they got headache again as I keep saying "your result was wrong" ... READ THE METHOD AGAIN! STUDY CAREFULLY THE APPARATUS ARRAGEMENT I GAVE YOU!

 ...arghhh...they start to stress ... but they keep trying and trying ... we took the wrong ‘h’ ... oh no ... hahaha..

they began the reading and enjoy again ....

when my STUDENTS really interest to learn.... (^_^)

it is saturday and they ask me for extra class...wow, that is the 1st time request ever from some1 call student since 2 years +++ i'm in this school...(proud a bit..huhu)
it is hard to understand chapter one force and motion...everything was new things for form 4 students in physics class...they could not imagine the situation...what CAN i do? what MUST i do? ... o0ooo....teaching form5 is better i think...huarghhhhh... the important things is HOW to attract them to PHYSICS???

they discuss the problems given themselves....will they succeed..

now they start to get headache....

TEACHER...HELP us...!!!

._|.<(+_+)>.|_.  !!!! THINK OUT OF BOX !!!! ._|.<(+_+)>.|_.

interesting PEKA (3) in physics subject....

actually this experiment was handled 2  weeks ago with the students...because i have nothing to write tonight so i decided to upload the picture...well this experiment is to investigate the relationship between the number of turns with the strength of the magnetic field...







whenever the number of turns of the copper wire is increase the strength of the magnetic field of the iron core also  increase....

my students were so excited when the experiment succeed...it is so hard to get the good result because the clip that connect the wire to the copper wire always loose while doing the experiment ... this picture was taken from the first group succeed after hour trial....

well done guys for not giving up hope in the investigation.(^_^)