Ch 9 an 11 guided reading notes
Ch 9 pages 273 to 284
9.1
What does a wave carry or transfer?
Does a wave transport matter? How do you know this?
How long will a wave travel?
What creates waves?
What happens to the energy that was carried by the wave in fig 2
What is the medium in fig1 and fig 2
Is there a medium in a vacuum?
Compare the direction of the wave and the direction of the medium in a transverse wave and in a longitudinal wave
Do you think sound waves travel fastest in solids or gasses? Explain
9.1 assignment
answer essential questions p 278 1 to 5
9.2
How do crests and compressions compare? How do troughs and rarefactions compare?
How do you measure wavelength for transverse and longitudinal waves?
The symbol for wavelength is the greek letter lambda λ
What unit is wavelength measured in?
How do you find the frequency of a transverse wave? Of a longitudinal wave? What is the unit for frequency?
The symbol for frequency is the greek letter nu v
What is the difference between period and frequency?
What is the mathematical relationship between frequency and wavelength?
How do you calculate the speed of any wave?
Is the speed of sound constant (always the same)?
P 282 probs 7-10
How is amplitude measured in a transverse wave? In a longitudinal wave?
What does the amplitude of a wave tell you about the wave?
Draw 2 transverse waves. One with a long wavelength, low frequency and low amplitude. Draw the other with a short
wavelength, high frequency and high amplitude. Do the same for 2 longitudinal waves.
9.2 assignment answer essential questions
p 284 11 to 17
Ch 9 review assignment p 300 25,26,28,29,30-35,3839-41, 47-49 p 302 1-6,9,10,11,12,19,20
Ch 11 p 338-351
11.1
What produces an electromagnetic wave?
How do electromagnetic waves transfer energy?
How do the electric and magnetic fields vibrate relative to each other in a electromagnetic wave?
How do you calculate the speed of an electromagnetic wave?
Express the speed of electromagnetic waves in meters per second?
The speed of light is represented by lower case c
Does electromagnetic waves mechanical waves? Do they require a medium?
What happens to the speed of electromagnetic waves as they travel from a vacuum to matter?
Not all electromagnetic energy feels warm and enables you to see.
Here is what you need to know about light. Light is made of massless particles called photons. Photons can behave like
particles and they can behave like waves. Thus light has a “Dual Nature” Depending on the experiment you are doing,
light can behave like a particle or a wave. See me when you are juniors for more info on this!!
11.1 assignment
answer essential reading questions
p 343 1 to 6
11.2
The electromagnetic spectrum is a chart that depicts all the different forms of electromagnetic radiation and their
frequencies and wavelength. Scientists have divided electromagnetic radiation into the categories: radio waves,
microwaves, infrared, visible, ultraviolet, x-rays, gamma rays. All of these different forms are the exact same kind of
energy that vary in their frequency and wavelength. The energy that a wave carries is not only related to its amplitude
but also its frequency. The higher the frequency, the greater the energy. So gamma rays, with the highest frequency
have more energy than visible light. But they are the same kind of energy! You should know the categories of EMR
(electromagnetic radiation), their relative wavelength and frequency (not the numbers, just which are greater or lesser)
and some common application of each.
11.2 assignment answer the essential questions
Ch 11 review
p 351 7 to 11
p362 20,21,22,25,26,28,29,30,31,34, p 364 1,5,8,10,13,14,18,20,