SURFACE CURRENTS
UNDERWATER CURRENTS
TIDES
OCEAN LIFE
OCEAN RESOURCES
100
The main cause of currents
What is wind?
100
The movement of water that sinks and flows beneath water that is less dense
What is a density current?
100
The force of attraction that causes tides
What is gravity?
100
Microscopic plants that float freely with ocean currents
What are phytoplankton?
100
A common resource obtained by letting shallow pools of seawater evaporate
What is salt?
200
Currents flowing toward tis imaginary line carry cold water
What is the equator?
200
Seawater becomes more dense when it has more sediment, is saltier, or is this
What is colder?
200
The body in space that most affects tides
What is the Moon?
200
Free-swimming organisms
What are nekton?
200
The process of removing salts from seawater to make freshwater
What is desalination?
300
A current that flows opposite the wind-related current
What is a countercurrent?
300
The movement of cold, deep water coming to the surface
What is upwelling?
300
A tide that occurs when the Sun and Moon are at right angles
What is a neap tide?
300
Microscopic animals that float freely with the ocean currents
What are zooplankton?
300
Large seaweed used a a food source
What is kelp?
400
The direction ocean currents turn in the Southern Hemisphere
What is counterclockwise?
400
A rapid current that carries mud and sand like an underwater landslide
What is a turbidity current?
400
A tide that occurs when the Sun, Moon, and Earth line up
What is a spring tide?
400
Tiny, colonial sea animals that form many reefs
What are corals?
400
The main metal contained in nodules on the seafloor
What is manganese?
500
Most surface currents are caused by these two types of prevaling winds
What iare the trades and westerlies?
500
These are contained in large amounts in upwelled water which helps marine life thrive
What are nutrients?
500
The difference in water level between high and low tide
What is the tidal range?
500
The process by which bacteria near deep sea vents use chemicals to produce food
What is chemosynthesis?
500
Sediments on the ocean floor made from microscopic shells
What is ooze?
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