Science 8 “Optics” Holy Redeemer Elementary（科学8u201C光学u201D神圣的救世主小学）.pdfVIP

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Science 8 “Optics” Holy Redeemer Elementary（科学8u201C光学u201D神圣的救世主小学）.pdf

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Science 8 “Optics” Holy Redeemer Elementary（科学8u201C光学u201D神圣的救世主小学）

Science 8 - Unit 2: Optics Student Outline Chp 4 : Properties of Light Name: _________________ 1. History of Light a. Provide examples of ideas and theories of light used in the past to explain observed properties. (Pythagoras, Michelson) (132-134) b. Compare the Speed of Light vs. Sound using thunder and lightning as an example. (135-136) c. Provide examples of how scientific knowledge of light resulted in the development of early technologies. (Telescope, Microscope) (133-134) 2. Properties of Visible Light a. Define Light as a form of energy that can be detected by the human eye. b. Identify and describe various Properties of Light (not in text as listed) (148-152 173-179) i. travels in a straight line (rectilinear propagation) e.g. shadow formation ii. reflects (reflection) e.g. mirrors (specular) and dust (diffuse) iii. refracts (refraction) e.g. bent stick effect iv. Disperses (dispersion) e.g. formation of a rainbow as light separates into its constituent colors. v. travels through a vacuum (does not require a medium) e.g. light from sun and stars reaching earth through space vi. travels to different degrees through transparent, translucent and opaque materials e.g. window pane, frosted window c. Define visible light spectrum (149-152) i. Observe dispersion with a Prism ii. List constituent colours of visible spectrum in order of degree of refraction. (ROY G BIV) d. Define frequency and wavelength. (139-140) i. Relate colours to wavelength. ii. Describe inverse relationship between frequency and wavelength.