The students will share in responsibilities during activities. Measuring Shadows Silhouettes Background Knowledge for Teachers Light in its many forms, natural or artificial, greatly affect our lives every day. It is therefore an important concept for children to understand in order to better appreciate something that they may otherwise just take for granted. Here is some basic background knowledge to get you started on this unit. You may refer back to this information when trying to explain the why of the six following investigations and activities.
Light travels in up and down 'wave' motions called a transverse waves.
They are much like waves of water and have high and low parts called crests and troughs. To our naked eye, light travels in a straight line. Only when an object is in the path of the light does this straight line bend or change direction. There are several types of materials that have different affects on light. Light may pass through an object that is transparent.