Air has weight

We cannot see air but it has weight. You can prove this to your friends by showing this experiment with two balloons. HOW TO DO IT ? Things you will need : 1. Two wooden sticks of 6″and 12″ 2. Two balloons of equal size 3. Two cans of cold drink 4. Tape for sticking 5. Pencil Step 1 Take a 12 inch long stick and put a mark at its centre with the help of a pencil. Step 2 Take two balloons...

May 28th, 2011 by admin 

Hot air balloon

A hot air balloon rises up in the sky because it contains air that is warmer than the air surrounding it. Let’s learn hoe to make a hot air balloon and find out how it rises upwards. Things you will need Tissue paper Scissors Some glue Cardboard 4 cm long and 5 cm wide A hair dryer   How to do it?   Step 1 – Take a tissue paper and cut five squares and four cones as shown...

May 12th, 2011 by admin 

Fire needs air

Air is needed to keep a fire burning. Air is a mixture of several gases. Oxygen in the air helps a fire burn. Through this experiment of a candle you can prove that fire needs air to keep burning. HOW TO DO IT ? Things you will need : 1. A candle  2. A plate  3. A glass jar  4. Water   Step 1 Place the candle in the centre of the plate. The candle should at least 5-6 inches tall. Step 2 Light...

March 27th, 2011 by admin