What are flat top seamounts called?

a. Trenches b. mid-ocean ridges c. Guyots d. plains

CRCT Question

Gallery Walk

Extention: Features and life on the Ocean Floor

Coffee Talk

National Geographic “DRAIN THE

OCEAN” Part 2

How do we know what the ocean floor looks like?

Red Hat: What are your thoughts and feelings as your watch this?

White Hat: Find important Facts and information

Blue Hat: What questions to you still have after watching this

Green Hat: What ideas for your project did you get from watching this?

Pick your Hat!

Self Reflection

You may add items you think you need before you hand it in

What can I add to my project?

All done?Go to my website and “tag the

text” for the last part of our notes

+=New information?=don’t understandStar=very important to remember Bubble=I wonder more about this

Tagging the Text

Mapping the ocean floor

1. SCUBA2. Sonar3. Submersibl

es4. Satellites

Features of the Ocean Floor Shoreline – a boundary where the land

and the ocean meet Continental margin – area where the

underwater edge of a continent meets the ocean floor.

Continental shelf – relatively flat part of a continental margin that is covered by shallow ocean water

Continental slope – marks the boundary between the crust of the continent and the crust of the ocean floor.

Abyssal Plains – large flat areas on the ocean floor.

Seamounts and Guyots – scattered along the floor of the ocean are thousands of underwater mountains called seamounts. They are volcanic mountains that rise more than 1000 meters about the surrounding ocean floor. Flat top seamounts are called guyots.

Trenches – the greatest depths found along the edges of the ocean floor

Midocean ridge – mountain ranges on the ocean floor.

Ocean Life Zones Intertidal zone – lies between the

low and high tide lines. Hard for living things to survive.

Neritic Zone – extends from the low tide line to the edge of the continental shelf. Rich in life.

Open-Ocean Zone – bathyal and abyssal zones, no sunlight, plants do not grow, little food is available, most animals are small.

Part 3

Ocean MotionsWaves – are pulses of energy that moves through the ocean.

Caused by wind blowing over long distances. Also affected by how long the wind has been blowing.Deep water is not affected by wave motion as much as surface.

Tides – are the daily rise and fall of the sea level along a coastline

They are caused by the gravitational pull of the moon and sun on the earth. There are 2 high tides and 2 low tides every 24 hoursThis means the tide goes from high to low in about 6 hours.

Spring tides

Are tides that are especially high or low during a 24 hour period.

They are caused by the earth, moon, and sun lining up in a straight line and the pull on the oceans is especially strong.

Neap tides

Tides that show very little change between high and low tide during a 24 hour period.

They are caused by the earth, moon, and sun forming a right angle and the pull on the oceans is weak

Currents – an ocean current is a “river” of moving water with the ocean.

Example – Atlantic Gulf Stream The water in the current has the same properties and

does not mix much with the rest of the ocean. All ocean currents flow in predicable patterns Surface currents, like waves, are driven and

determined by wind and the Coriolis effect Coriolis effect – the apparent curving of the path of a

moving object from an otherwise straight path due to the Earth’s rotation.

Ocean currents can affect climate by warming or cooling the air above the current. Example – England is warmer than it should be based on its latitude because of the Gulf Stream current coming from the southern USA.