HOW TO MAKE AN ‘ANEMOMETER’

In this experiment you will make a device (anemometer) that will tell you the speed of wind per hour and minute!!

Materials

A square shaped cardboard sheet

Clay

Pencil with a rubber on its back

Tape

A thumbtack

4 paper cups

Instructions

Cut two equal strips of cardboard.

 Put them on each other so that they form a cross.

 With the help of the tape stick the 4 paper cups on each end of the cross. Paint one cup in any color.

Put the thumbtack in the middle of the cross.

 Attach the cross to the back of the pencil. Now put the nib of the pencil on a ball of clay and…………….Your anemometer is ready.

Put it outdoors and note the position of the painted cup, and wait and record the number of time it rotates per hour or minute and measure the speed in number of rounds per hour or minute.

DANCING RAISINS

In this experiment you will have fun by watching these awesome raisins dance!!

Materials:

Carbonated soda

Raisins 

Trasperent glass

Instructions

Pour the carbonated soda into the glass.

Now put a few raisins into the soda and then watch what happens to the raisins, they don't float nor sink they simply dance!!

What happens?

As the bubbles of the soda float, the raisins attach them and when they almost come to the surface the bubbles burst causing them to fall and when they are sinking they attach new bubbles and the same    

process repeats again!!