Direction: Fill in the missing words to complete the paragraph. Choose your answer from the box below. Light travels in a (1) line from a source that bounces off an object. We can see the object because the enters our eyes. Wood and cardboard are materials that light cannot travel through. Glass is material which allows light to pass through. Tissue paper is a (5) which will let some light through. When an object blocks the light, a (6) is formed. (2) (3) shadow opaque transparent light translucent straight