Water Pump Made

We made 2 water pumps.

We demonstrated to guardians in our school.

What you need

• a straw
• a wooden skewer
• a small amount of tape 
• a bowl of water

What to do 

Half cut the straw a third and two birds of the way along its lenght.

Push a wooden skewer through the centre of the straw.

Bend the two ends of the straw together and tape them to skewer.

Place the pointy end of the straw into some water and spin it about the skewer.

What may happen

You should find tat if you spin the skewer that will start to lift up the straws , and if you spin the skewer fast enough water will start to spray out of the sides.You are pumping water upwards.

Source: http://www.thenakedscientists.com/HTML/experiments/exp/pumping-straw-a-centrifugal-pump/

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