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Can you blow a paper ball into a bottle? It sounds easy, but it’s harder than you think!

By Mike McRae This activity uses water and food colouring to explore fluid systems. It’s a good idea to do this activity in a safe place outside, and to wear old clothes while you do it! Safety: This activity uses hot water, so younger scientists should ask an adult to help.  

This may surprise you, but there’s no such thing as suction. In this week’s video we look at what creates ‘suction’; air flow and areas of high and low pressure.