Silently the tiger crouches, its striped coat blending perfectly with the evening shadows. A deer is coming! The tiger turns its head to watch---and suddenly its eyes begin to glow with a strange...
Seeing it clearly
> The lens in your eye bends light rays and makes them focus, or come > together, at the back of your eye. Your eyes don't hurt, but the doctor says you need glasses. Why? How can glasses help your...
A water-drop lens
You can make a lens from anything that is curved and clear---even a drop of water. Here is an easy way to make a magnifying lens. Materials - cardboard - food wrap (clear plastic) - medicine...
Close-ups
Its huge, glittering eyes stare at you. Its big mouth opens and closes, opens and closes. But suddenly it swims to the other side of the bowl. It's only a small goldfish, after all! Why did the...
Mirror, mirror
Who is that person in the mirror? It seems to be another you, doing exactly what you are doing. How can a mirror \"copy" you? A mirror is very smooth. The front of a mirror is Hat, polished glass....
Shadow time
> At sunrise your shadow on the ground is very long---longer than you > are! At sunset your shadow is long again, but it points the other way. > And in the middle of the day, when the sun is high in...
What makes a shadow?
> In the sunshine, your shadow travels with you everywhere you go. > Sometimes it bends in funny places. Sometimes it takes a strange > shape. But it's always there. On a cloudy day, or in a dark...
Light gets around
Materials - ball (small) - block (small) - cardboard - clay (modeling) - flashlight - jar (round) - masking tape - milk - mirror (small) - paper (white) - ruler - scissors - water The...
Looking at moonlight
Boys and girls, come out to play, The moon is shining bright as day. Mother Goose Under a full moon there is plenty of light for a game of tag, for hide-and-seek, or for an evening walk. It's...
What is light?
A burning candle has a soft, glowing flame that gives off light. But when you turn on a light bulb, there is no flame. What makes the light bulb give off light? If you hold your hand above a light...
