Download Properties of Waves Notes

20 Phyical Science
Properties of Waves Notes
Chapters 13 & 14
A. Speed of Light & Plane Mirrors
Info
OHT on Electromagnetic Spectrum
What is Light?
Demo
laser - properties of light
SOL
Calculate the speed of light using Michelson’s method
(f = 37,500 RPM with one way distance of 30 km)
Demo
images using mirrors and lenses
image characteristics
Notes
SOL and Image Characteristics
Practice
p. 373 1-2
Demo
Pin Hole Camera - demo camera and define hi, ho, di, do
Activity
PHC template and do lab
Notes
PHC - theory, include magnification and convention
example(s)
Practice
p. 376 #1-3
Activity
Symmetry and Kaleidoscope & Investigation 13.2
- straight line
- 2nd law of reflection
- scattering
p. 391 13 - 16
p. 391 # 17,18
kaleidoscope - demo
Notes
First law
Activity
Investigation 13.3 & Practice p. 392 # 22 - 27
They try - periscope, image of image of their faces
Practice
p. 390 # 2 - 8
Ray Diagrams
Simple, Periscope, & 2 Mirrors at Right Angles
B. Curved Mirrors
Demo
Effect of Concave and Convex Reflecting surfaces on the path of light
Define
Converging, diverging, focal point, focal length, centre of curvature, radius of
curvature, vertex, principle axis
Notes
Effect of radius of curvature on focal length (on OHT) - f = R/2
Ray Diagrams
rationale
steps (on OHT)
rules for (on OHT)
practice 5 converging scenarios & 1 diverging scenario
Practice
p.412 #8 – 11 (only if time permits)
Activity (optional)
Activity 14-1 p.408
must review image characteristics
must know how to find the focal length
must know where to measure distance from
complete data table and questions # 1-5
for Q#5 stress how to compare numbers and why
Lesson
Mirror Equation (and review sign convention)
Example #1 - An object 8.0 cm tall is placed 37.0 cm from a converging mirror
with a focal length of 23 cm. How far away is the image formed, how large is it,
what is the magnification and what are the characteristics of the images?
Example #2 - The size of an image is one third that of the object when placed in
front of a diverging mirror with a radius of curvature of 22.0 cm. How far away
is the object from this mirror?
Practice
p. 404 # 1, 2b, & 3
p. 415 # 14 - 21
Illustration
Spherical Aberration p. 404
Applications Demo reflecting telescope (need concurrent activity - see below)
Reading - “Seeing the Edge of the Universe” p. 416
Reading - p. 405 - 407 - Solar Furnaces
Practice
p. 411 # 1,2,5,6,7