1. Warm Up: Write out the question or restate in your answer.
1. Name the two types of Mechanical waves. 2. Sound is what type of wave? 3. Name the 3 bones of the inner ear. 4. Transverse waves move _______ to the disturbance/energy. 5. Compressional waves move___________ to the disturbance/energy.

2. Light Waves, Electro Magnetic Spectrum, Visible Light, and the Eye

3. Electromagnetic Waves
Waves that DO NOT require a medium for the energy to travel
Examples: Light, radio waves, x-rays, gamma rays
All waves on the electromagnetic spectrum

4. Electromagnetic Waves
Difference between the different waves is wavelength
EM (Electromagnetic) spectrum illustrates the differences

7. Light Waves Transverse wave that carries energy
Visible light only makes up a TINY fraction of the electromagnetic spectrum and makes up the colors of the rainbow humans see on a daily basis.

8. Light...what is it? Light Energy Atoms
As atoms absorb energy, electrons jump out to a higher energy level.
Electrons release light when falling down to the lower energy level.
Photons - bundles/packets of energy released when the electrons fall.
Light: Stream of Photons

9. The Eye Let’s explore the eye! http://www.yorku.ca/eye/eye1.htm Pupil-
Cornea-
Lens-
Retina-
Sclera-
Iris-
Optic nerve-

10. Anatomy of the Eye

11. How the eye works Video Are you left eye or right eye dominant?
So what exactly are we looking at….

12. Reflection VS. Refraction
Light reflects off a surface at the same angle, it hits it
Refraction is when waves speed up or slow down due to travelling in a different medium.
Below, the light rays are slowed down by the water and are bent, causing the ruler to look odd. The two mediums in this example are water and air.
Let’s see what happens!

13. Light and Color Vocabulary Terms Details Diagram Main Idea
During the video complete this graphic organizer in your notebook
Vocabulary Terms
Details
Diagram
Main Idea

14. Visible light only makes up a TINY fraction of the electromagnetic spectrum and makes up the colors of the rainbow humans see on a daily basis.
The lowest energy and frequency of visible light is red and…
the highest energy and frequency is violet

15. Electromagnetic Spectrum
Visible Spectrum – Light we can see
Roy G. Biv – Acronym for Red, Orange, Yellow, Green, Blue, Indigo, & Violet.
Largest to Smallest Wavelength.

17. What is the difference between a reflection and a refraction of light?
Ticket out the door
What is the difference between a reflection and a refraction of light?
Name two differences between light and sound.