Chapter 17 & 18 Study Guide

1. Chapter 17 & 18 Study Guide

2. Chapter 17 • What is the difference between electromagnetic radiation and electromagnetic waves? WAVES CARRY RADIATION (ENERGY) • EM waves can behave in two ways. What is the difference? WAVE- FLOW; PARTICLES- PHOTONS • What is the EM spectrum? ARRANGEMENT OF WAVES How are the waves arranged? LEAST TO GREATEST ENERGY • What are the different EM waves that make it up? R, M, I, VL, UV, X, G

3. Chapter 18 • What are 3 types of materials? TL, TP, O • What are primary colors of light? R, G, B Secondary? C, M, Y • What are primary colors of pigments? C, M, Y Secondary? R, G, B • When primary colors of light combine in equal amounts what is produced? WHITE LIGHT For pigments? BLACK PIGMENT • What are 3 types of mirrors? CV, CC, P

4. What is the difference between reflection and refraction? BOUNCES/ BENDS • When light enters a new medium what happens? CHANGES SPEED • How are rainbows formed? RAINDROPS ACT LIKE PRISMS • What cause a mirage? REFRACTION • What are 2 types of lenses and how are they different? CC/ CURVES IN; CV/ CURVES OUT • What are the parts of the human eye and their functions? C, P, I, L, R, ON • What is nearsightedness? CAN SEE CLOSE What lens corrects it? CC • What is farsightedness? CAN SEE FARWhat lens corrects it? CV • What is a telescope? OPTICAL INSTRUMENT Its use? SEE DISTANT OBJECTS • What is a microscope? OPTICAL INSTRUMENT Its use? SEE SMALL OBJECTS • Be able to ID convex/concave mirrors and convex/concave lenses from a diagram.

5. What’s the Difference? Mirror Concave Convex Lens Concave Convex