Warm Up, November 4th, 2014
1) What are the benefits of one of you
teaching class? What are the cons?
(educational answers only)
2) What was the purpose of yesterday’s
activity/lab?
3) What would a creature that lives in
the intertidal zone need to be adapted
to in order to live there? What about a
creature in the neritic zone? Deep?
Continental Shelf*
- The submerged border of a
continent that slopes gradually
down.
Phytoplankton*
- Microscopic organisms that
inhabit the upper, sunny layers of
oceans and most fresh water.
Phytoplankton produce most of
the world’s oxygen.
Why are oceans SALTY?
1. Eroding land - salt in rocks.
Why are oceans SALTY?
1. Eroding land
2. Volcanic emissions
Why are oceans SALTY?
1. Eroding land
2. Volcanic emissions
3. Atmospheric
Deposition
(All sorts of stuff gets
up in our air and
comes back down .)
Why are oceans SALTY?*
1.
2.
3.
4.
Eroding land
Volcanic emissions
Atmospheric deposition
Biological and chemical
reactions on the sea floor
Brain Pop - Oceans
Our ocean has 3 ecosystems:
1. Intertidal Zone (aka…littoral zone
aka…shoreline)
Our ocean has 3 ecosystems:
1. Shoreline (aka…littoral zone…intertidal zone)
2. Neritic zone (aka…Nemo/Sponge Bob
territory…)
Our ocean has 3 ecosystems:
1. Shoreline (aka…littoral zone…intertidal zone)
2. Neritic zone (aka…continental shelf)
Our ocean has 3 ecosystems:
1. Shoreline (aka…littoral zone…intertidal zone)
2. Neritic zone (aka…continental shelf)
Our ocean has 3 ecosystems:
1. Shoreline (aka…littoral zone…intertidal zone)
2. Neritic zone (aka…continental shelf)
3. Deep ocean (aka…benthic zone)
Our ocean has 3 ecosystems:
1. Shoreline (aka…littoral zone…intertidal zone)
2. Neritic zone (aka…continental shelf)
3. Deep ocean (aka…benthic zone)
Our ocean has 3 ecosystems:
1. Shoreline (aka…littoral zone…intertidal zone)
2. Neritic zone (aka…continental shelf)
3. Deep ocean
The Three Zones – Intertidal Zone*
- Animals and plants must be able to
live in wet and dry conditions
- Zone with most sunlight
Because of the tides, waves, &
predation, shoreline creatures can fly
high or dig down low. Or wait it out…
WHAT CAUSES THE TIDES?
WHAT CAUSES THE TIDES?
The tides are caused by the Sun and the
moon having a tug-o-war with the Earth
as rope!
The tides are the sun & the moon
having a tug-o-war with the earth
(gravitationally speaking).
Why doesn’t the sun pull the earth hard
enough to negate the moon? The sun has
much more mass after all…
The Three Zones
Shoreline…Littoral Zone…Intertidal
Zone
Neritic Zone
Deep Zone
The Three Zones – Neritic Zone*
- Home to unique habitats: kelp
forests and coral reefs
- Zone with most life
The Three Zones
Shoreline…Littoral Zone…Intertidal
Zone
Neritic Zone
Deep Zone…Oceanic Zone…Benthic
Zone
The Three Zones – Deep Zone*
- High pressure, no light
- Zone with most water (65%)
Bill Nye - Oceanography