Ocean Review Flashcards
What factors influence the density of the ocean water?
Temperature and salinity
The densest water is found in the
Arctic regions
The movement of water from greatest depths up to the surface is called
Upwelling
A measure of saltiness of water is known as
Salinity
A mass of moving water is a
Current
What causes surface currents?
Winds, continents, uneven Heating of the earth
Deep ocean currents are caused by differences —————- rather than——-
Temperature and winds
What do surface currents carry away from the equator?
Warm water that helps heat up areas
In what direction does water move in upwellings?
Up from the bottom of ocean to surface
What causes an upwelling and what is the benefit of an upwelling?
It brings up nutrients from the bottom of the ocean which allows fish to eat food
What kind of current is the Gulf Stream? Why is this current so famous and important?
Warm water current. It goes from the U.S. across the ocean and provides heat for United Kingdom.
What do ocean waves transport?
Energy and nutrients
How is heat carried around the globe?
Surface currents
What happens to ocean temperatures as you increase depth?
Pressure increases and temperature decreases
The periodic rising and falling of the ocean water is called
Tides
————— occurs when high winds or waves cause a larger than usual amount of water to wash back from the shore
Storm surge
What does a wave have?
Wavelength, crest through, and height
Two causes of currents in the ocean are —— and———————
Winds and Coriolis effect
What are the three types of technology used for exploring the ocean?
Submersible, sonar, and satellites
What are the names of the five oceans?
Atlantic, pacific, arctic, Indian, and southern
The largest ocean is
Pacific Ocean
The second largest ocean is
Atlantic Ocean
What are the two coldest oceans?
Arctic Ocean and southern ocean
When waves approach the shore the wavelength ———— and the height————
Shortens and increases
What are tsunamis? Where do they occur?
They’re giant waves that are caused by earthquakes and volcanoes. They occur in the Pacific Ocean ring of fire.
What is beach erosion? How can it be prevented?
Waves coming and pulling the sand out to sea. Make groins out of sand.
