1. First, WAVES ARE COOL!!!!
Also, They Carry ENERGY, transferring it from one place to another, through a MEDIUM, or substance, like WATER…

2. Ocean waves are just one kind
Ocean waves are just one kind. Waves from the sun bring us light, and all the colors of a sunset.

3. The waves coming from the sun are called Electromagnetic Waves
The waves coming from the sun are called Electromagnetic Waves. They transfer energy through tiny electric particles called photons!

4. Frequency of EM waves

5. Waves can be big or small, long or short, fast or slow – depending on their:
Amplitude, Wavelength, and Speed…
They can be bunched closely together, or spread out –
depending on their Frequency (how many pass a certain
point, in a certain amount of time)

6. Particle Attraction and Vibration

7. Red orange yellow green blue indigo violet
LIGHT AND VISION 1
A. Electromagnetic Spectrum- aka________
1. What is it?
a. Chart that shows all waves of ____________that travel through space
b. There are many types of energy waves included in the EMS
EMS
energy
Red orange yellow green blue indigo violet
_______________________________________________________
Sun warmth
Sun burn
_________
__________
Low energy
High energy
__________________
_____________________

8. 186,000 Refraction changes speed more dense more slowly
B. Behavior of Light
1. Light Facts
a. Travels at a speed of ________________miles/second!!!!
b. Travels in a straight line, unless the material it is moving through changes, in which
case light can change direction or “bend” =______________________
ex) Prisms; rippling images in water; wine/water glasses
c. This “bending” (refraction) happens because light _______________ as it passes
through different substances. The ______ _______ the substance, the
______ ________ light moves
186,000
Refraction
changes speed
more dense
more slowly

9. 2. What can happen to light as it hits an object?
a. ___________________- light energy is taken in by object. Ex-_____________
b. ___________________- light energy bounces off the object. Ex-_____________
c. ____________________-light energy goes through the object. Ex-______________
hot blacktop
absorbed
reflected
mirror
transmitted
window

10. Light absorption on your roof!!!

11. Light absorption on your car!!!

12. Can light reflection save the planet?
PS20 consists of a solar field made up of 1,255 mirrored heliostats designed by Abengoa Solar. Each heliostat, with a surface area of 1,291 square feet, reflects the solar radiation it receives onto the receiver, located on the top of a 531 feet-high tower , producing steam which is converted into electricity generation by a turbine.

13. Concentrating solar power has emerged as one of the most cost-effective solar technologies for large-scale solar projects.
Using mirrors or reflective troughs, sunlight from desert areas is concentrated onto a liquid that makes steam. In a power plant, that steam turns a turbine to make electricity.

14. Light transmission in your house!!!
Skylights and windows allow you to light your house without using any electricity 

15. Once again… 3 THINGS CAN HAPPEN TO LIGHT AS IT HITS AN OBJECT (RED ARROW REPRESENTS LIGHT)
Example- mirror, light bounces off
REFLECTED
Example- window, light goes through
TRANSMITTED
Example- Photosynthesis is when a plant absorbs light and makes food,
Light + water + carbon dioxide  sugar + oxygen
ABSORBED
Usually when light hits an object all 3 things can occur at the same time