Shadow Science Why 3 Shadows Both the moon and earth cast 3 shadows: an umbra, a penumbra, and an antumbra. the umbra is the shadow's dark center portion, while the penumbra and the antumbra are different types of half shadows. shadow experiments. to understand why the earth and the moon have 3 types of shadows, let's start on a smaller scale. Make a guess about what makes your shadow change size and shape throughout the day. write your guess—called a hypothesis —in your shadow science notebook. place a large tarp on the ground. for the best results, try to start your project in the morning on a nice sunny day. ask a friend to stand on the tarp and face the sun.
Shadow Science Why 3 Shadows Shadows are formed when light hits an object it cannot travel through. when you see your own shadow on a sunny day, your body has blocked light from the sun. light travels in straight lights and so cannot bend around your body, which is why you see a shadow. shadows change shape during the day as the position of the sun changes in the sky. Activity 3: shadow experiment. choose an object which will make a shadow. move the object nearer or further away from a light source. measure the length of the different shadows. you could record. These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. the adult involved is fully responsible for ensuring that the activities are carried out safely. fun collection of shadow activities and shadow experiments, including shadow frame, 3d shadows, drawing shadows, sculpture. What is a shadow? shadows need a light source and an object. a shadow is light blocked by an object. the object can block all or part of the light. shadows change size based on how close they are to the light source. the science of light and objects. opaque objects block all the light. some objects don’t block any light – like windows.
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