Archive for the 'Science' Category

Moon Phase for UPSR Students

Posted on June 28 2010 by Admin

What is the difference between Solar Eclipse and and Lunar Eclipse. Solar Eclipse happens when the sun ray shadow behind the moon. The Lunar Eclipse happens when the Moon is shadowed behind the Earth . Credits to http://csusap.csu.edu.au

Science Form 5 Questions from Li Wei

Posted on June 1 2010 by Admin

Carbon-14, 14C, or radiocarbon, is a radioactive isotope of carbon with a nucleus containing 6 protons and 8 neutrons. Its presence in organic materials is the basis of the radiocarbon dating method to date archaeological, geological, and hydrogeological samples. Carbon-14 was discovered on 27 February 1940, by Martin Kamen and Sam Ruben at the University [...]

Mitosis process

Posted on May 17 2010 by Admin

Interphase Cell is performing for mitosis process. Chromosomes are not clearly seen and nucleus may be  visible at the stage. Prophase Chromatin becomes visible. Nucleus disappear. Centrioles moves in opposite direction. Fibers extends to the from the centromers. Some fibers cross the cell to form the mitotic spindle. Metaphase Spindle fibers align the chromosomes along [...]

Crazy Science Experiments

Posted on May 10 2010 by Admin

These are some of the fun Science or Chemistry experiment. Hope all the PTSM is having fun with the experiment utilizing Dry ice. This is one of the coolest science experiment in the world. Hope you guys love science.

What is Fats and Cholestrol Science Form 5

Posted on March 1 2010 by Admin

Fats are organic compounds which consist of Hydrogen Oxygen Carbon There are 2 types of fats Saturated : Animal fats Unsaturated : Plant fats WHEN CONSUME TOO MUCH OF FATS: Obesity High in Cholesterol There are two types of cholesterol a) LDL bad cholesterol, can cause ateriosclerosis- narrowing down the passage of blood flow b) [...]

Science Questions Unanswered

Posted on February 26 2010 by Admin

These were the unanswered science questions What is Pellagra? Happens due to Vitamin B3 defficiency What is chlorosis? Due to insufficient chlorophyll produced by plants Bile is secreted from liver

Carbon Cycle Science Form 5

Posted on February 1 2010 by Admin

Carbon Cycle plays a vital role to palnts and animals. This helps to keep the amount of carbon dioxide and oxygen in the air constant What is the importance of Carbon Cycle?  Plant needs it for photosynthesis and animal needs oxygen to breath. Look at the diagram.

Water Cycle Science Form 5

Posted on February 1 2010 by Admin

The chapter is all about Natural Cycles such as water cycles, nitrogen cycles and carbon cycles Foob web Natural Disasters Pollution and Effects of Pollution Water Cycles The Sun heats up the water and evaporates the water from sea, pond and lakes Water vapour raises up and condenses to form clouds Rain fall back the [...]

Voluntary and Involuntary Action

Posted on February 1 2010 by Admin

Questions Define Voluntary and Involuntary action? Provide an example to elaborate both the actions? Voluntary Action: Can be controlled by us. Example are writing, singing, dancing and walking PATHWAY: Receptor – ->Spinal Cord –> Cerebrum –> Spinal Cord –> Effector Involuntary Action: It’s actions tae place automatically without the conscious of our mind. Example Heart [...]