Q1 suggest two methods to find out wind direction at a given place.

Q2 explain why holes are made in hanging banners and hoardings.

Q3 give two examples of the fact that air exerts pressure.

 Q1.Throw a paper up in the air. The flying direction of the paper shows the direction of the wind.

                                                                        2 method

Hold a ribbon in the hands. The flying direction of the ribbon shows the direction of the wind.