Light in the Ocean Notes
Light
Electromagnetic ______________________________ ranging from short __________________________
to ______________________________ wavelengths.
Short wavelengths Violet
Blue
Green
Water ___________________________ short wavelengths
Long wavelengths –
Yellow
Orange
Red
Water _________________________ long wavelengths.
Color of the Ocean
•
Ocean water appears blue because it __________________________________________________
from the sun, but reflects the blue light.
•
Ocean Water color is also affected by the presence of ___________________________which
reflect green light & _____________________________________.
Color of the Bay
What color is the water Chesapeake Bay?
__________________________________________________
What might be in the water to make it that color? _______________________________________
_____________________________________________________________________________________________
3 Ocean Light Zones
Photic (Euphotic) Zone - __________________________________________________
Has _________________________, photosynthesis, ______of life
Twilight (Disphotic) Zone - 200m to 1000m depth
Only ______________________________ of light, no plants, only _________________ animals
Midnight (Aphotic) Zone – below 1000m depth
No _________________________________, only _______________________________.
90% of the ocean is _____________________________________________
Bioluminescence
Some organisms can produce light by _________________________ ______________________.
Since __________ __________________ can be seen in all ______________________,
bioluminescent light is ___________________________________ blue.
Analysis Questions
1. Which wavelengths are longer than visible light? ______________________________________
_______________________________________________________________________________________
2. Which wavelengths are shorter than visible light? _____________________________________
_______________________________________________________________________________________
3. Which of these wavelengths are absorbed by water? __________________________________
_______________________________________________________________________________________
4. Which are reflected by water? ________________________________________________________
_______________________________________________________________________________________
5. What is the difference between the Euphotic and Aphotic zones of the ocean? _______
_______________________________________________________________________________________
_______________________________________________________________________________________
6. What creates bioluminescence? ________________________________________________________