Ocean Water
Currents and Climate
Waves
Life in Oceans
Vocabulary
100
What percent of the Earth's oxygen is given off by ocean organisms?
70 percent
100
Do ocean currents move in a straight line?
No
100
What are the crests an troughs of a wave/
Crest - the highest point Trough - lowest point
100
How many cells do most plankton have?
one
100
What are organisms that create their own food?
Producers
200
What is the most abundant disolved gas in the ocean?
nitrogen
200
What ocean current flows from Florida northeastward toward North Carolina?
The Gulf Stream
200
What direction does a wave move?
Back and forth or in circles
200
What can nekton do to help them search more areas for food?
Swim
200
What is the rise and fall in sea level?
tide
300
What are the three temperature layers in the ocean?
surface layer, thermocline, and deep water layer
300
What two things would make seawater more dense?
Water getting colder and becoming more salty.
300
What causes a breaker?
The friction of the ocean floor near shore slows down the bottom of the wave and the top overtakes it and collapses.
300
How do producers make food that live toward the bottom of the ocean?
chemosynthesis
300
What is a current in the ocean that brings deep, cold water to the ocean surface?
Upwelling
400
What happens to pressure and water temperature as you go further down in the ocean?
Pressure increases and temperature decreases.
400
Why are fish attracted to areas of upwellings?
The cold water contains high concentrations of nutrients and allows tiny marine animals to flourish.
400
How are tides created?
By the gravitational pull of the Earth and the Moon and teh Earth and the Sun.
400
What is transfered in a food chain?
Energy
400
What is the measure of the amount of solids or salts dissolved in sea water?
Salinity
500
At sea level, the pressure of the atmosphere pushing down on the ocean surface is referred to as what?
1 atmosphere of pressure
500
The turning of ocean currents is an example of what/
The Coriolis effect
500
What causes steep cliffs?
Wave erosion
500
Sunlight and water are what type of factors in an ecosystem?
nonliving
500
What type of current is powered by wind?
Surface current
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