1. 10/6 - 7th Grade Agenda
Learning Objective: Learn about waves and the Electromagnetic Spectrum
Brain Pop: Waves
Textbook Reading: p
HW: Reading & Note Taking p.23 – 26

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

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

4. Is light a wave? Yes But why?
because there is physical space between the peaks of the waves - it is a real, physical, wave. Just like water waves and sound waves, you can do "wave things" to light waves, such as send them through diffraction gratings and see the interference.

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. Do 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.