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Published byDwight Vernon Wilkinson Modified over 5 years ago
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Behaviour of Light On Different Materials and Surfaces
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Lab time! Take the next 15 minutes to fill out the Behaviour of Light on Different Materials & Surfaces prelab You should do this independently! Once completed, turn to the next page and make predictions HOW WILL LIGHT BEHAVE WHEN A FLASHLIGHT IS SHONE ON THE MATERIALS? AFTER you have made predictions, your teacher will pass out the various materials SHINE A FLASHLIGHT ON THEM, AND RECORD YOUR RESULTS Complete all questions on your sheet!
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Have you handed your labs in?! GOOD!
NOW LET’S DISCUSS WHAT HAPPENED!
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Reflection What happens to light when it is reflected?
What colour of tee shirt would you want to wear on a hot day? Why? What happens when you look at a green plant?
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Absorption What happens to the light during absorption?
What colour absorbs ALL light? What colour absorbs NO light? What happens to white sunlight when it hits a red stop sign?
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Transmission What happens to the light during transmission?
Is it always 100% transmitted? What are some examples of partial transmission of light?
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Refraction What is refraction? WHY does the light bend? DENSITY!
The light changes speed Watch the following video discussion the refraction of sunlight!
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TRANSPARENT All light goes through Examples Glass Bubbles
Clean, clear water Magnifying Glass
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TRANSLUCENT Only SOME light goes through
Objects are often unclear on the other side Examples Stained glass Tinted windows Sunglasses
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OPAQUE NO light goes through Example Apple Wall Table Couch
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