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. 52-60 HW: Reading & Notetaking p.42-43 Reminder: Chap 2 Section 1 & 2 Formative Assessment on 10/5

Daily Reflection Prompt: Write 3 questions that you have about electromagnatic waves.

Transparent Materials Transparent material trans_____ most of the light that strike it. mit

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

Opaque Materials An opaque material refl_____ or absorbs all of the light that strikes it. ects

Why does the apple appear red? Because the red light reflect it. All other light are absorbed.

What do you notice about the apple when it is shown in red light?

What do you notice about the apple when it is shown in green light?

What do you notice about the apple when it is shown in blue light?

What are the three primary colors of light? Red, Blue, Green

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?

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

Reflection Reflection occurs when an object or wave bou_____ back off a surface through which it cannot pass. nce

Convex Mirror

Concave Mirror

Refraction Bending of light waves due to change in spe____ is known as refraction ed

Why does this pencil appear broken? Because light slowed down as it entered the glass as water

Convex Lenses

Concave Lenses produces smaller image

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.