Seawater
Ocean Structure
Coastal Features and Bathymetry
Waves, Currents, and Circulation
ENSO and Ekman Transport
100

What are the three properties of seawater?

Temperature, salinity, and density

100

What does the abyssopelagic zone contain?

The ocean floor

100

What are the three types of plate boundaries?

Convergent, divergent, and transform

100

What drives surface currents?

Winds

100

What happens to global temperatures during El Nino?

Warms

200

What is the pycnocline?

A region in the ocean where density changes rapidly with depth.

200

What are the layers of the ocean from closest to farthest from the surface?

Epipelagic, Mesopelagic, Bathypelagic, Abyssopelagic, Hadalpelagic

200

What feature stretches across the Atlantic?

Mid-Atlantic ridge

200

What two factors drive thermohaline circulation?

Temperature and salinity

200

Why does water get deflected during Ekman Transport?

The Coriolis Force

300

What ions make up salt?(Cool Superheroes Might Secretly Carry Pepper spray)

Chloride, Sodium, Magnesium, Sulfate, Calcium, Potassium

300

What are the layers of the ocean in it's three-layer structure?

Mixed layer, pycnocline, and deep layer

300

What plate boundary forms a mid ocean ridge?

Divergent

300

At what height to length ratio does a wave have to be at to break?

1:7

300

Where is the low pressure cell during La Nina?

Near Asia and Australia/Western Pacific

400

Where does most salt come from?

The erosion of rocks

400

In what ocean layer do animals start turning black and red?

Bathypelagic

400

What is an estuary?

An ecosystem between the ocean and freshwater where there is brackish water.

400

Why does a wave break?

When water reaches the shore, the bottom layer of water moves slower compared to the rest of the water, making it fall over.

400

What phenomenon does Ekman Transport cause? (Hint: Wind blowing parallel to a shore)

Upwelling

500

What is the process of biological pumping?

1) Plankton take in nutrients at the surface

2) The plankton die and sink to the bottom of the ocean

3) They distribute the nutrients within them to the bottom of the ocean

500

In what ocean layer do we start seeing bioluminescent animals?

Mesopelagic

500

What is a bar-built estuary?

An estuary with a sand bar separates the freshwater from the ocean.

500

What is a swell?

A collection of waves produced by storm winds raging out at sea

500

What is it called when neither El Nino or La Nina is happening?

Neutral ENSO