How does a match stick light up by using magnifying glass.

The magnifying glass is a convex lens. It can be used to make the obeject look bigger or a concentrator of the sun rays for heating and fire lighting purposes. When the magnifying glass is place on top of the match, it would form a small point of light on the tip of the match stick. If the match stick is dry, together with the strong sun rays and the focal strength of the lens is adequate, the match stick will ignite as sufficient amount of heat and light is needed to ignite the match stick.