1. 9/ th Grade Agenda
Learning Objective: Learn about waves and the Electromagnetic Spectrum
Collect HW: Reading & Note Taking p.25 – 28
Brain Pop: Waves
Textbook Reading: p
HW: Reading & Note Taking p.29 – 32
Reminder: Chap 1 Test on 9/24 & 9/25
Reminder: 3 extra credit points for bringing 100% correct Chap1 Self Assessment (from PearsonSuccessNet.com) Due: 9/26 & 9/27

2. Daily Reflection
Prompt: What is the difference between manipulated and responding variable?

3. Wave
A wave is a disturbance that transfer ene_____ from place to place.
Who can give me examples of waves?
rgy

4. Is light a wave?
Yes
But why?

5. Picture of Light Wave
Image of a pulse of light that is 2.5 billionths of a millionth of a second long

6. Energy
In science, energy is defined as the ability to do wo___. rk

7. Medium
The material through which a wave tra____ is called a medium
Who can give me examples of medium?
vels

8. Does Light Waves need a medium?
Scientist first thought that Light needed to travel through a medium. So they invented the idea of aether in space.
They look for aether in outer space but they found nothing.
So, Light Waves can travel without a medium even in a Vacuum of outer space.

9. Crest gh
Hi___ point of a wave is called a crest

10. Trough ow
L___ point of a wave is called a trough

11. Amplitude
imum
Amplitude is the max______ distance that the particles of medium carrying the wave move away from their rest positions.
Which rope has higher amplitude?

12. Wavelength
The distance between two corresp______ parts of a wave is its wavelength.
Which rope has longer wavelength?
onding

13. Frequency
Wave frequency is the num_____ of complete waves that pass a given point in a certain amount of time
ber

14. Daily Reflection
Prompt: Write 3 facts that you learned from the video.