Teks Explanation 11

    A kite is an object which is made from a light material stretched over a frame. Due to its light material, a kite will lift off the ground and fly when it is tilted into the wind.

    A kite uses wind to make it fly because it is heavier than air. When wind travels over the surface of the kite, it is split into two streams of air. One stream of the air goes over the kite while the second stream goes under the kite.

    The upper stream above the kite. The lower stream hits the kite at a shallow angle and creates an area of high pressure.

    The high pressure area has a pushing effect while the low pressure area has a pulling effect. The combination of push and pull can create enough force to lift the kite into the air.

    Kites have been known for thousands of years. They are used for military or scientific purposes. Today's kites are much used for leisure and competition.

47. The first word of “it” at the first line of paragraph two refers to . . . .