- Waste are things that we no longer use and would throw away.
- Waste may include materials such as old magazines, old newspapers, boxes, glasses and plastic bottles, metal containers and food residues.
- Food and plants are throw away are known as organic waste.
- We can find these waste from markets and food stalls.
- Chemical waste can come from agriculture, factories and our home.
- Smoke from the burning of fuel in factories and vehicles are waste that are let out into atmosphere.
- The amount of waste produced by human activities is increasing.
- In some places, the local authorities will provide proper facilities to dispose of the waste.
- We should play our parts to make sure we use the proper ways of disposing of waste.
- Use the bins provided by the local authority to throw our waste.
- It is a good habit to sort our waste into different types before throwing them away.
- Chemical waste can be put into special containers and disposed of appropriately.
World of Science
Post By Kor Chee Siang D20112054342
Friday 14 December 2012
Waste
Waste
Thursday 13 December 2012
Plant Competition
Plant Competition
- Like animal, plants living in the same habitat have to complete for the same factors in order to survive.
- Plants need water, carbon dioxide, sunlight and nutrient to make food.
- Plants get water and nutrient from the soil.
- If there are too many plants growing in the same area, the place will be overcrowded.
- They complete for sunlight, water, nutrient and space.
- Competition can occur among plants of the same species or of different species.
- When competition occurs, the plants that receive enough water, nutrient and sunlight grow better and healthier.
- Weaker plants may become stunted, wilted or die.
Wednesday 28 November 2012
Speed
- A fast moving vehicle takes a shorter time to reach its destination.
- A slower moving vehicle will take a longer time to travel the same distance.
- We can measure how fast or slow an object moves.
- This measurement is called speed.
- What is speed ? Speed involves distance and time.
- If we know the distance travelled and the time taken, speed can be calculated using the formula : speed = distance/ time
Saturday 17 November 2012
Trip to Science Museum Kedah
My Trip to Science Museum Kedah
- 30.09.2012 ( Sunday)my school have a trip to Science Museum in Kedah with my student.
- This is 2 of 1 Science Museum in our country, another one is Science Museum Kuala Lumpur.
- Science Museum Kedah have many interest thing about Science and make us understand many knowledge about Science.
- After this trip, my student more interested in learning Science.
- Let us see something we can meet in this Science Museum Kedah:
Wednesday 7 November 2012
Machines Part 2
- Some tools of devices use more than one simple machine, such as scissors.
- A tool or device that has more than one simple machine is a complex machine.
- Example :
Step Ladder - Inclined plane, Screw |
Mechanical pencil sharpener - Wedge, wheel and axle |
Puncher - Lever, wedge, screw |
Scissors - Wedge, lever, screw |
- By using the simple machine or complex machine, can help us to do a lot of work and easy.
- Such as :
They use a pair of scissors to cut the paper to make the card . |
Sunday 28 October 2012
Machine Part 1
What is Machine ?
- A machine is any tool or device that enables us to do work easily, quickly and conveniently.
- Do you know what is the Machine is he use ? That is one of the complex machines.
- Do you know how the complex machines made it ? They made of the simple machines.
- A simple machine is a tool that allows us to use less force to do work.
- These are seven types of simple machines, that are inclined planed, screw, gear, pulley, lever, wedge and wheel and axle.
Sunday 14 October 2012
What is Force ?
- All actions involve pushes and pulls.
- Pushes and pulls are forces.
- A push is an action of moving an object away.
- A pull is an action of bringing an object towards us or in the direction we are moving.
- Expect activity of force :
- The boy slides down because there is a force pulling him.
- A man needs to pull the fishing rod to get the fish out of the water.
- The roundabout rotates when being pushed.
- The girl on the swing moves forward and then upwards when given a push.
- The girl shoot the ball because there is a force pulling the ball.
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