Water Molecule
Ocean Density & Salinity
Seawater Variations
Vertical & Surface Currents
El Niño Southern Oscillation
100

The two elements found in a water molecule

What is Hydrogen and Oxygen?

100

What is the definition of salinity, and what unit is it measured in?

What is the amount of salts dissolved in water?

What is parts per thousand (ppt)?

100

Sea surface salinity is low at the equator thanks to - 

What is Heavy rainfall at the equator?

100

The Global Ocean Conveyor Belt is also known as ______ circulation.

thermohaline circulation 

100

Which ocean experiences ENSO?

Pacific Ocean

200

The type of bond that holds water molecules together 

What is Hydrogen bonds?

200

The two factors that determine the density of ocean water 

What is temperature and salinity?

200

What word is used to describe the clarity (clearness) of ocean water? 

What is turbidity?

200

List two examples of vertical currents -

What is upwelling and downwelling?

200

How often does ENSO occur?

3-7 years

300

The temperature at which water freezes (°C AND °F)

What is 0°C? (32°F)

300

Fresh water is _______ than saltwater.

Cold water is _______ than warm water. 

Word bank: more dense, less dense

Fresh water is less dense than salt water. 

Cold water is more dense than warm water.

300

Ocean Layer of rapid temperature decrease where heat energy is quickly lost -

What is the Thermocline?

300

The phenomenon that causes surface currents to deflect clockwise in the Northern hemisphere and counterclockwise in the Southern -

What is the Coriolis Effect?

300

El Niño is unusually _____ conditions, and la niña is unusually _____ conditions.

warm, cool

400

Water evaporates at a faster rate under _______ temperatures, and at a slower rate under _______ temperatures.


warmer, cooler

400

Three freshwater inputs that DECREASE salinity 

What is rainfall, ice melting, and runoff?

400

How does Carbon Dioxide enter the ocean?

Absorbed from the atmosphere

400

List three effects of warm surface currents 

- increased rates of evaporation

- heavy rainfall on nearby coasts

- high cloud cover

- high humidity

400

How do trade winds vary during el niño?

Weaker than normal

500

Explain the difference between cohesion and adhesion

Cohesion - ability of water molecules to stick to EACH OTHER

Adhesion - ability of water molecules to stick to OTHER substances

500

Two freshwater outputs that INCREASE salinity

What is evaporation and ice formation?

500

This dissolved gas is highest near the ocean’s surface thanks to sunlight and higher rates of photosynthesis -

What is Oxygen?

500

What are the benefits of upwelling?

- Nutrient rich water is brought to the surface & helps aquatic life flourish 

500

Which causes warm, wet, rainy conditions along the eastern Pacific - la niña or el niño?

El niño 

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