The figure below shows the cross section of an aeroplane wing (aerofoil), with the aeroplane moving in the direction shown by the arrow.
![figure of cross section of an aeroplane wing](https://www.easyelimu.com/images/form_3_past_papers/Term_1_2021/figure_of_cross_section_of_an_aeroplane_wing.JPG)
- Sketch streamlines to show how air flow fast the with as the aeroplane moves
- Explain how dynamic lift of the aeroplane is caused by the wing.