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10/1 & 10/2 - 7th Grade Agenda Learning Objective: Learn about the primary colors of light Collect Reading & Note Taking : p.39 – 40 Chap 2 Section 1 & 2 Study guide Mirrors & Lens lab Class Reading: p HW: Reading & Notetaking p.42-43 Reminder: Chap 2 Section 1 & 2 Formative Assessment on 10/5
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Daily Reflection Prompt: Write 3 questions that you have about electromagnatic waves.
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Transparent Materials
Transparent material trans_____ most of the light that strike it. mit
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Translucent Materials
A translucent material sca____ light as it passes through, just as smoke, fog, and clouds scatter light as it passes through the air. tters
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Opaque Materials An opaque material refl_____ or absorbs all of the light that strikes it. ects
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Why does the apple appear red?
Because the red light reflect it. All other light are absorbed.
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What do you notice about the apple when it is shown in red light?
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What do you notice about the apple when it is shown in green light?
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What do you notice about the apple when it is shown in blue light?
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What are the three primary colors of light?
Red, Blue, Green
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What are the three primary colors of pigment?
Yellow, Magenta, Cyan What color do you get when you combine the three primary colors of pigment?
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Why do three primary colors of pigments produce black instead of white?
As pigments are added together, fewer colors of light are reflected and more are absorbed
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Reflection Reflection occurs when an object or wave bou_____ back off a surface through which it cannot pass. nce
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Convex Mirror
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Concave Mirror
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Refraction Bending of light waves due to change in spe____ is known as refraction ed
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Why does this pencil appear broken?
Because light slowed down as it entered the glass as water
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Convex Lenses
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Concave Lenses produces smaller image
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Mirrors & Lens Lab Reflection
Prompt: 1.How can you produce an upside down image? 2. Which lens or mirrors produce a small image? 3. Which lens or mirrors produce a larger image? 4. Write 2 other observations that you noticed during this lab.
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