1. BELLRINGER Engage your Brain, page 269. (True/False)
BE SURE YOU HAVE YOUR TEXTBOOK PAGES AND NOTE PAPER OUT ON YOUR DESK.

2. Waves & Light Learning Goal:
The student will understand different types of waves and be able to compare and contrast different types of waves.

3. Daily Learning Target
9/19/2013 Students will be able to describe a wave and identify parts of the wave.

4. What are waves? p
What are waves?
disturbances that transfer energy from one place to another.
They do NOT transfer matter.
Some waves require a medium to travel.
A medium is the material a wave travels through
For example: water, rock, air, a rope, a table

5. Waves are Disturbances

6. Waves transfer energy not matter
Waves transfer energy not matter. The water waves below are carrying energy but are not moving. Waves can only exist as they have energy to carry.

7. IN YOUR BOOK
Page 270: Underline the names for the highest and lowest points on a wave.
Page 270: Looking at the picture at the bottom of the page, draw an arrow showing the direction you think the wave energy is traveling.
What sentence on that page supports your choice? Put brackets around the sentence. < >

8. Labeling a wave

9. IN YOUR BOOK
Page 271: The four pictures on the page will show the passage of time for a leaf floating on the water. PREDICT…
Illustrate: In the space provided, draw the leaf in the location it will be after two seconds.
Model: In the space provided, draw the leaf and wave as they will appear after 3 seconds.

10. Bellringer – 5 minutes WRITE OUT THE QUESTION, THEN ANSWER.
What are waves?
Do waves transfer matter?
What do many waves require in order to travel?
What do we call the highest point on a wave?
What do we call the lowest point on a wave?

11. Waves & Light Learning Goal:
The student will understand different types of waves and be able to compare and contrast different types of waves.

12. Daily Learning Target
9/19/2013 Students will be able to explain how a wave transfers energy.

13. Two Ways to Transfer Energy p. 272-273
How does a wave transfer energy?
LONGITUDINAL
TRANSVERSE
Energy travels in the direction the wave travels
Does not transfer matter
Has compressions and rarefactions
Particles move back and forth in the same direction as the wave (parallel to the wave)
Travel faster than transverse waves
Example: Sound waves
Energy travels in the direction the wave travels
Does not transfer matter
Has crests and troughs
Particles move perpendicularly to the direction of the wave
Travel slower than longitudinal waves
Example: Earthquake’s S-Waves.

14. KEYWORD: PERPENDICULAR
Transverse Waves
In a transverse wave the matter in the wave moves up and down at a right angle to the direction of the wave
KEYWORD: PERPENDICULAR

15. Parts of a Transverse Wave

16. Longitudinal Waves
In a longitudinal wave the matter in the wave moves back and forth parallel to the direction of the wave
KEYWORD: PARALLEL

17. Parts of a Longitudinal Wave

18. Bellringer
Create a Double Bubble Map COMPARING AND CONTRASTING longitudinal waves and transverse waves (use the T-chart in your notes).

19. IN YOUR BOOK
Page 272: Looking at the picture at the bottom of the page, (1) label the arrow that shows the direction the wave travels and (2) label the arrow that shows how the spring is disturbed.
Page 273: Looking at the picture at the bottom of the page, (1) label the arrow that shows the direction the wave travels and (2) label the arrow that shows how the spring is disturbed.

20. EXAMPLES OF COMBINED WAVES

21. EXAMPLES OF COMBINED WAVES

22. CHECK FOR UNDERSTANDING
What are two ways in which longitudinal and transverse waves are similar and two ways in which they are different. (TURN IN)
HOMEWORK: Summarize today’s notes, 5-10 minute review of chapter notes, read p. 274, study vocab (Quizlet).

23. Bellringer
September 24, 2013
Name some of the types of electromagnetic waves that travel from the sun to the earth.

24. Electromagnetic Waves
Two Types of Waves p. 274
Mechanical Waves
Electromagnetic Waves
What are two types of waves?
Require a medium
Can be either longitudinal or transverse.
Travel at different speeds in different media.
Sound travels fastest through a solid and the slowest through air (the denser the material, the faster sound)
Do NOT require a medium
Transverse
Travels in a vacuum (like outer space) at 300,000,000 m/s, but slower in solids, liquids & gas.
Example:
Sunlight travels through space to get to earth as radiation in the form of visible light, ultraviolet, and infrared.

25. Complete pages 275-277 in your textbook
Complete pages in your textbook. If you do not have your textbook pages with you, partner up and write out all questions and answers.

26. CHECK FOR UNDERSTANDING
What are the three ways in which energy from the sun travels to the earth? (TURN IN)
HOMEWORK: Summarize today’s notes, 5-10 minute review of chapter notes, READ p. 284, study vocab.

27. Bellringer What are the two types of waves?
September 25, 2013
What are the two types of waves?
The sun travels to the earth as an electromagnetic wave. What are the 3 forms of EM waves that travel from the sun to the earth?

28. Waves & Light Learning Goal:
The student will understand different types of waves and be able to compare and contrast different types of waves.

29. Daily Learning Target 9/25/2013
Describe and/or explain that waves move at different speeds through different materials.

30. Electromagnetic Waves
Speed of Waves p. 284
Is wave speed the same for both types of waves?
Mechanical Waves
Electromagnetic Waves
Requires a medium (solid, liquid, or gas to travel)
Does not travel in a vacuum.
Order of speed (fast to slow):
Solid (depends on density)
Liquid
Gas (depends on temperature)
Travels fastest in a vacuum
300,000,000 m/s
300,000 km/s
186,000 mi/s
Travels much slower in a medium (solid, liquid, or a gas)

31. Bellringer
Which travels slower, mechanical waves or electromagnetic waves? Support your answer. For example:
____________________ waves travel slower because ______________________________________.

32. Waves & Light Learning Goal:
The student will understand different types of waves and be able to compare and contrast different types of waves.

33. Daily Learning Target
9/26/2013-9/27/2013