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Ready model describes the phenomena of Day & Night On Earth. In the model you can see a bulb as a source of light (i.e. sun) and a tilt globe of earth representing the earth. The ring over the globe of earth is labeled which indicates Day and Night, East and West direction and Sun rise and sun set. Plug the pin, switch on the bulb and try to understand the phenomena of day and night.Procedure: 1.) Place the Lamp in a fixed position. This represents the sun. 2.) Rotate the globe to represent the rotation of the Earth in 24 hours, or day and night. 3.) Observe how the shadows lengthen and fade as the globe rotates. 4.) Observe your own shadows throughout the the daytime.Explanation: Shadows are produced when a solid figure blocks the path of light and produces a dark space behind it. As the Earth spins, the angle of sunlight changes. Day and night are caused by the amount of light on our position on Earth. The Earth spins around on its axis completely every 24 hours. Therefore we receive approximately 12 hours of sunlight (day) and 12 hours facing away from the sun (night). As the Earth spins, the angle of sunlight changes. Your shadow is longer when the Earth has rotated further from the sun and the angle of the sun's rays is greater