Cool Science Experiments For Kids This site contains some science experiments for kids to do @home or school
  • scissors
    November 20th, 2009CTUncategorized

    Hey kids. Here comes another question.

    Everytime when we touch an ice, it feels sticky. Why?
    Is it because…
    A. The ice melts very fast
    B. The ice has glue on it (You must be joking ;))
    C. The ice is cold, our hands is hot
    D. Our hands is sticky

    The answer is C. The ice is cold, our hands is hot

    Now, let me explains why…

    The ice allows use to leave it alone, but is just that we ‘like’ to stick with the ice.

    Sounds funny?!!!

    Well to the ice, our body temparature is very hot. Remember ice melting point is 32°F or 0°C. While our temparature is 98.6°F or 37°C. The moment our hands touch an ice, heat energy from our fingers will be absorbed by the ice. The surface that our fingers touch will melt a little.

    Very quicky the heat energy will travel into the ice. The water(which was melted when our fingers touch the ice) on the surface of ice quicky become frozen again. The process of melting and frozen on the surface of ice creates the feeling of stickyness.

    Unless we hold on to an ice without letting it go, allowing the heat energy from our hands keep flowing into the ice. This will make ice melts slowly and the sticky feeling will dissapear.

  • scissors
    November 20th, 2009CTUncategorized

    Hey, kids… What do u think?

    Human greatest discovery are…
    A. Food
    B. Fire
    C. Water
    D. Electricity
    E. All of the above

    Think for 10 seconds and tell me what is your answer.

    (Drumming sound….)The moment of truth…

    The answer is… B. Fire

    Camp Fire

    Camp Fire

    According to Dictionary.com , discovery is an act or an instance of discovering.

    Until now, scholars agree that humans greatest discovery is FIRE. Ever since humans learnt how to use fire to get rid of wild beast and they don’t have to live in the cave anymore.

    So, humans started to live on flat ground, they started to build houses on their own. Besides, fire helps to cook food, fire also helps to make a lot tool for farming, hunting, cutting.

    In conclusion, we can say that because of fire, humans were able to achieve the civilazation we enjoy today!

  • scissors
    November 14th, 2009CTBiology

    What?!!!

    A fish can live without water…!!!

    Yes, kids. This how wonderful our earth is.

    Let me introduce you to Mr. Lungfish.

    A South American Lungfisg. Found this from http://www.ucmp.berkeley.edu/vertebrates/sarco/dipnoi.html

    A South American Lungfisg. Found this from http://www.ucmp.berkeley.edu/vertebrates/sarco/dipnoi.html

    Today, we can fonly find lungfish in Africa, South America and Australia.

    So, what make this fish so special that is can survive without water.Some lungfish can survive in dried up rivers for weeks or months.

    Well, in waters lungfish use their gill to respirate or breathe. If the rivers dried up, the air will go throughh a lunglike organ called a swim bladder. This is because the swim bladder consist a lot of tiny blood capilary or in general terms blood vessels which act as lungs. (As we all know, 😉 exchanges of oxygen and carbon dioxide happen in our lungs). Thus gas exchanges happen in this swim bladder thingy and our lungfish friend can keep pon surving without waters.

  • scissors
    November 10th, 2009CTUncategorized

    What is a supertankers ?

    Don’t confuse them with the tanks in the military. They travel on waters.

    Found this picture from www.auuuu.com

    Found this picture from www.auuuu.com

    In fact they are large crude oil tankers which carry crude oil ranging from 150 to 300 thousand tons. With their full power on, an oil tanker with very huge inertia needs a long time to get to its maximum speed.

    So kids, you might ask: “How do they stop then ?”

    Well, kids. Even with engine set into reverse condition (propeller in reverse rotation), the oil tankers still need to travel about 10km before they can come to a stop. Remember ship don’t have brake. They can’t just stop.

    With such a big internia on the oil tanker, they just can turn left or right as easy in driving the cars. So for every turn, the captain needs to set the direction of the propeller correctly well before the tanker make a turn.

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  • scissors
    November 10th, 2009CTForce

    Yo, kids. Is Cool Science Experiments For Kids again.

    This time around we gonna go through walls…

    Hello…, doc. How can you going through the wall…!!! This ain’t no magic.

    No worries guys. This is pure science. I will explain it later, But now, is better to get our hands dirty.

    Let’s prepare the material for this experiment:-
    a) a marble, if you wanna have more fun then a few
    b) a coin make it is big enough to cover the mouth of the bottle
    c) a piece of paper (11cm x 30cm)
    d) a soda bottle
    e) a cellophane tape

    Just follow these steps:-
    1. Roll the piece of paper, use the cellophane tape to make sure it holds. Now, we will have a 30cm tall cylinder shape paper roll.
    2. Put the coin on the mouth of the soda bottle.
    3. Next, we put the paper onto the mouth of the soda bottle.
    4. The moment of truth, put the marble on top of the paper roll and let it fall…
    Can the marble fell into the soda bottle ? 😉
    5. What happen?… Something strange ? (Yes, the marble went in the bottle)

    Explanations:-
    Newton’s Third Law states that:
    If object A exerts a force on object B, then object B will exert an equal but opposite force on object A.

    Or like your teacher always say

    “To every action there is an equal but opposite reaction”

    In this experiments, when our marble hits the coin, the coin will produce any equal but opposite reaction/foce onto the marble, making the marble bounce back. The hitting force on the marble will causes the coin to temporary leaving the mouth of soda bottle. Thus, resulting the morble fell into the soda bottle.

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