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1. How does light behave?
When a light ray leaves its source, it always travels in a straight line. To prove this, you can create shadows on the wall.
Light rays also seem to be white, but they are actually made up of a rainbow of colors. When light hits an object, it can behave in many different ways. Light can be absorbed, can pass through without changing, can reflect, or can refract.
What is the main idea?
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Directions: Read the paragraph and complete the activity that is on the same page.
Certain colors cause more light to reflect. For example, if you look at a white object in bright sun, it will look brighter than a black object. This happens because the white color is reflecting the light back into your eyes. This is the reason you can get sunburned when you snow ski. You get both the direct light rays from the sun and the reflected light rays from the surface of the snow.
What is reflected light energy?
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Insert a picture of a reflected light ray.
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List examples of objects or materials that reflect light
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2. What happens when light energy is reflected?
Light energy is reflected when the light ray hits an object and bounces back in the opposite direction.
In real life, you can recognize when light is being reflected because a mirror image of the object will be created. Materials that reflect the best are often smooth or shiny like metals.
4. What happens when light energy is refracted?
Light energy is refracted when a light ray enters an object at one speed. As soon as it hits the surface, it slows down. The light then “bends” or exits the object at a different angle than it entered.
In most cases, refraction will make things appear or look different. The word “SCCRUBBB” can be used to help you decide when refraction is happening. SCCRUBBB stands for smaller than normal, closer than where it really is, clearer, if there is a rainbow, it is upside down , bigger than normal, if it looks bent, or if it looks broken.
The rainbow shows up in special cases. When light enters a prism, the ray bends so much that the white light separates into the many colors of a rainbow.
Tools that use refraction of light energy
telescope
camera
glasses
What is refracted light energy?
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How can you decide when light is being refracted?
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List examples of objects or materials that refract light
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