This week in Science we were investigating how heavy aeroplanes stay up in the sky. We learned that the air around us is not empty but filled with air which pushes everthing around us- this is called air pressure.
Moving air has a lower pressure than still air, and the faster the air is moving the lower its pressure.
This is the basis of how aeroplanes stay in the air- air flows faster over the curved top of the wings than under the flatter bottom. The slower air underneath has greater pressure which pushes upwards on the plane and makes it fly!!.
To test this theory we made paper aeroplanes and flew them around our classroom. We had a paper airplane race to see which design and which throwing technique is the best!