Cool Science Experiments For Kids

This site contains some science experiments for kids to do @home or school
  • scissors
    December 16th, 2009CTPressure

    Do you like the idea of having a plane all by yourselves.

    Well, after this Cool Science Experiments For Kids YOU CAN…!!!

    In fact, this a very simple experiment.

    All you need is: 2 PIECE OF A4 PAPER…!!! and a pair of scissors

    Hey kids, save a tree, save the earth, just find some used A4 paper. OK…

    By now. I think most of you know how to fold a paper plane.

    But, if you still in doubt below are the step by step guide. Just fold along the dashed line(s).

    You will need two paper plane for this experiments
    Plane 1 : Step 1 - Step 5
    Plane 2 : Step 1 - Step 6 (Kids, please take note. I have make some modification on our plane)

    Step 1 : Fold along the dashed lines, then open it out

    Step 1 : Fold along the dashed lines, then open it out


    Step 2 : Just fold along dashed lines and follow the arrows.

    Step 2 : Just fold along dashed lines and follow the arrows.


    Step 3 : Keep following the dashed llines and arrows

    Step 3 : Keep following the dashed llines and arrows


    Step 4 : Just follow dashed line and arrow again ;P

    Step 4 : Just follow dashed line and arrow again ;P


    Step 5 : You know what to do...

    Step 5 : You know what to do...


    Step 6 : There is a slight modification here, cut along the red lines

    Step 6 : There is a slight modification here, cut along the red lines

    Judgement Day…!!!
    Just fly your 2 private jets. Have a lot of fun.

    What happen ? :-

    Notice that:-

    Yeah...We Are Go Up...!!!

    Yeah...We Are Go Up...!!!

    Flight path of Plane 1 keep flying down.

    But, flight path of Plane 2 was up and down. This shows that how Bernoulli Principle works when a plane taking off.

    Explainations:-

    Side View Of Your Plane

    Side View Of Your Plane

    Bernoulli Principle Revisited

    Bernoulli Principle Revisited

    From the side view of your plane, you notice that the top surface is slightly curve upwards, while the bottom is flat. So when you fly your plane through the air, the air flow speed on top has to travel faster to cover a longer distance. The air flow below the wing is slower.

    Remember to what Mr. Bernoulli said, “a steady flow of fluid (gas or liquid), the pressure of the fluid decrease when the velocity(speed) if the fluid increase”

    Ah…forget it!!!

    In the case of your plane, the air flow on top of the wing is faster, therefore creating a lower pressure region on top of the wing. While the slower air flow under the wing creates an higher pressure region. Thus, the higher pressure helps the plane to take off or flying upwards.

    For more flying actions…!!!

    Flights of nearly 300 feet are possible…!!! Kids, 300 feets…!!! A bit hard on taking off. But, you can go 500 feets with the plane…!!! The Dark Force…!!!
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  • scissors
    February 26th, 2009CTPressure

    Kids, this time we gonna float(literally) a piece of paper.

    Material need for this experiments:-

    1. A thin sheet of paper

    2. You yourself :)

    Just for the steps below and have fun:-

    1. Hold a thin sheet of paper in front of your lips.

    2. Blow air across the top of the piece of paper.

    3. Notice what will happen…

    Flying paper...!!!

    Flying paper...!!!

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  • scissors
    February 22nd, 2009CTBernoulli's Principle

    Who is Bernoulli ?

    What is this principle about?

    What it got to do in our daily life ?

    Well, Daniel Bernoulli was born on 29 January 1700 in Groningen, Netherlands.

    Here come the boring part :-

    Bernoulli’s principle states that a steady flow of fluid (gas or liquid), the pressure of the fluid decrease when the velocity(speed) if the fluid increase and converse

    Wow… what is all this pressure increase or decrease…it is confusing man…!!!

    Ok, lets make this explanation simple.  Have you ever wonder why a huge and heavy airplane can fly in the air ?

    Aerofoil

    How an aerofoil is lifted

    So, if you look closely at side of an airplane’s wing. The shape of the wings is in the form of an aerofoil.

    You notice that the top surface is slightly curve or arched, while the bottom surface is flat. When a wing in the form of an aerofoil speed through air, the air flow speed on top has to travel faster to cover a longer distance. The air flow speed below the wing is slower.

    Again according to Mr.  Bernoulli,  “a steady flow of fluid (gas or liquid), the pressure of the fluid decrease when the velocity(speed) if the fluid increase”

    In this case, the air flow on top of the wing is faster, therefore creating a lower pressure region on top of the wing. While the slower air flow under the wing creates an higher pressure region. Thus, the higher pressure helps the plane to take off.   That is why airplane speeds very fast through the runway before  it takes off.  Hey kids, please fasten your seat belts before you take off…!!!

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