For Science Week we learned how to make a spray.
We have already learned about different kinds of angles:- right angles, acute and obtuse angles.
To make a spray you need to be able to make right angles and acute angles with two straws. Before we tried this, we loved predicting what would happen.
By blowing the air at the top of the straw you create a vacuum. The air and then the water in the straw rush up to take the place of the air blown away. This water gets blown into a spray.