LIGHT AND SOUND

The light comes from the sun. it is quite high up in the sky because the shadows are long ( vertical plane).
other sources of light are: the lamps, candies, torches, screen,and so on.
natural sources of light:the sun amd the moon.the shape and the size of the shadow depends on the shape of the object that is causing the shadow and its orientation with respectto the source of light.
SOUND: Intense sounds can be heard from a greater distance from the place of origin than weaker sounds. for example: the sound made by a computer can heard when we are working on the computer but not if we are 40 or 50 meters away the pitch is defferent also much more intense sounds are made on a drum than on a guitar.