Ocean Depth and Light
What colors give animals in
the jungle the best
camouflage?
RED?
ORANGE?
YELLOW?
GREEN?
BLUE?
VIOLET?
BROWN?
image courtesy of
http://commons.wikimedia.org/wiki/File:US_Woodland_pattern.png
What colors give animals in
the desert the best
camouflage?
RED?
ORANGE?
YELLOW?
GREEN?
BLUE?
VIOLET?
BROWN?
image courtesy of http://commons.wikimedia.org/wiki/File:SixColor_Desert_Pattern.jpg
What colors give animals in
the ocean the best
camouflage?
RED?
ORANGE?
YELLOW?
GREEN?
BLUE?
VIOLET?
BROWN?
?
http://www.youtube.com/watch?v=ufxGw8EqY5Q
Which photo was taken
in the euphotic zone?
A
http://www.public-domain-image.com/nature-landscapes-publicdomain-images-pictures/underwater-public-domain-imagespictures/coral-reef-underwarer-photo.jpg.html
B
Image ID: nur04506, Voyage To Inner Space - Exploring
the Seas With NOAA Collect
Location: Atlantic Ocean
Photographer: P. Rona
Credit: OAR/National Undersea Research Program (NURP);
NOAA
Which photo was taken
in the euphotic zone?
A
http://www.public-domain-image.com/nature-landscapes-publicdomain-images-pictures/underwater-public-domain-imagespictures/coral-reef-underwarer-photo.jpg.html
B
Image ID: nur04506, Voyage To Inner Space - Exploring
the Seas With NOAA Collect
Location: Atlantic Ocean
Photographer: P. Rona
Credit: OAR/National Undersea Research Program (NURP);
NOAA
Which fish lives in the
disphotic zone?
http://www.pbs.org/wgbh/nova/sciencenow/030
5/04-glow-06.html
A
http://coralreef.noaa.gov/aboutcorals/values/fi
sheries/resources/pifsc_cred_wrasse.jpg
B
Which fish lives in the
disphotic zone?
http://www.pbs.org/wgbh/nova/sciencenow/030
5/04-glow-06.html
A
http://coralreef.noaa.gov/aboutcorals/values/fi
sheries/resources/pifsc_cred_wrasse.jpg
B
Which crab lives
in the Aphotic zone?
http://stellwagen.noaa.gov/education/adulted/invertid_
crustaceans.html
http://oceanexplorer.noaa.gov/explorations/06
newzealand/media/hermitcrab_600.html
A
B
Which crab lives
in the Aphotic zone?
http://stellwagen.noaa.gov/education/adulted/invertid_
crustaceans.html
http://oceanexplorer.noaa.gov/explorations/06
newzealand/media/hermitcrab_600.html
A
B
Depth & Light
•So what do you know about
light?
Depth & Light
•Can you name the parts of a
light wave?
Direction of wave
?
http://commons.wikimedia.org/wiki/File:Simple_wave.png
Depth & Light
•Can you name the parts of a
light wave?
Direction of wave
crest
http://commons.wikimedia.org/wiki/File:Simple_wave.png
Depth & Light
•Can you name the parts of a
light wave?
Direction of wave
?
http://commons.wikimedia.org/wiki/File:Simple_wave.png
Depth & Light
•Can you name the parts of a
light wave?
Direction of wave
trough
http://commons.wikimedia.org/wiki/File:Simple_wave.png
Depth & Light
•Can you name the parts of a
light wave?
Direction of wave
?
http://commons.wikimedia.org/wiki/File:Simple_wave.png
Depth & Light
•Can you name the parts of a
light wave?
Direction of wave
amplitude
http://commons.wikimedia.org/wiki/File:Simple_wave.png
Depth & Light
•Can you name the parts of a
light wave?
Direction of wave
?
http://commons.wikimedia.org/wiki/File:Simple_wave.png
Depth & Light
•Can you name the parts of a
light wave?
Direction of wave
wavelength
http://commons.wikimedia.org/wiki/File:Simple_wave.png
Depth & Light
•Different
wavelengths
produce
different
colors.
http://commons.wikimedia.org/wiki/File:Colors_and_wavelengt
hs.png
Depth & Light
•Sunlight, is
white light.
•It has all
wavelengths
& colors.
http://commons.wikimedia.org/wiki/File:Colors_and_wavelengt
hs.png
Depth & Light
•We can use a prism to separate colors
by wavelength.
http://commons.wikimedia.org/wiki/File:Light_dispersion_conceptual_waves.gif
Depth & Light
•What is the order?
•ROY G. BIV
http://commons.wikimedia.org/wiki/File:Light_dispersion_conceptual_waves.gif
Depth & Light
•When light hits a
incident
ray
material like water it
is:
•Reflected,
•Absorbed,
•or transmitted.
reflected
absorbed
transmitted
Depth & Light
•What is the color of water?
Depth & Light
•What is the color of water?
•BLUE
Depth & Light
•What is the color •What happens
when light passes
of water?
through
a
blue
•BLUE
material?
Depth & Light
•What happens
Absorbed
light
when light passes
through a blue
material?
•Every color but
blue is absorbed
transmitted
light
Depth & Light
•So what happens to color at different
depths of the ocean?
•Materials :
•black felt represents the aphotic zone
•square felt pieces in assorted colors (ROY G.BV)
•Blue plastic “goggles” to represent layers of water
Depth & Light
•PROCEDURE:
•Place black felt with color pieces face-up.
•Add one blue layer at a time in front of your
eyes.
•Put an “X” in the box for every color you can
see.
Depth & Light - (copy the table)
layers
0
1
2
3
4
R
O
Y
G
B
V
RESULTS:
What color (s) disappears with 1 layer? 2? 3?
Is there any color which did not disappear?
layers
0
1
2
3
4
R
O
Y
G
B
V
Depth & Light
•Some color’s travel deeper, due to shorter wavelength.
•Violet gets scattered by water.
http://disc.sci.gsfc.nasa.gov/edu
cation-andoutreach/additional/sciencefocus/oceancolor/oceanblue.shtml
Depth & Light
•How does that affect the organisms
that live in the ocean?
Depth & Light
PROCEDURE:
•Have your partner randomly distribute pieces on the
reverse side of the black felt.
•(Don’t peek!)
•Put on your goggles to simulate the Desphotic zone
(3 layers).
Depth & Light
PROCEDURE:
•Grab the first 10 pieces you can see. (no feeling
around!)
•Record results.
•Repeat for your partner.
•Total your results.
Depth & Light
• PROCEDURE: (copy the table)
red
you
partner
total
orange
yellow
green
blue
violet
black
Depth & Light
RESULTS?
•So what were the easiest colors to find?
•Which colors were rarely picked up?
red
you
partner
total
orange
yellow
green
blue
violet
black
Time to show what
you have learned.
What colors give animals in
the jungle the best
camouflage?
RED?
ORANGE?
YELLOW?
GREEN?
BLUE?
VIOLET?
BROWN?
image courtesy of
http://commons.wikimedia.org/wiki/File:US_Woodland_pattern.png
What colors give animals in
the desert the best
camouflage?
RED?
ORANGE?
YELLOW?
GREEN?
BLUE?
VIOLET?
BROWN?
image courtesy of http://commons.wikimedia.org/wiki/File:SixColor_Desert_Pattern.jpg
What colors give animals in
the ocean the best
camouflage?
RED?
ORANGE?
YELLOW?
GREEN?
BLUE?
VIOLET?
BROWN?
?
What colors give animals in
the ocean the best
camouflage?
RED?
ORANGE?
YELLOW?
GREEN?
BLUE?
VIOLET?
BROWN?
1) Design
your own
camouflage
pattern
What colors give animals in
the ocean the best
camouflage?
RED?
2) Write a
paragraph
ORANGE?
describing your
YELLOW?
camouflage pattern.
Use data from your GREEN?
experiment to
explain why you
BLUE?
chose the colors in
VIOLET?
the pattern.
BROWN?
1) Use data
from your
experiments to
design your
own
camouflage
pattern