Unit 8 Test Flashcards
Source of energy that causes wind to form
Sun
Cold water is
More dense
Hot water is
Less dense
How does upwelling effect the food web
Plankton eats the nutrients brought up from upwelling then the plankton provides the nutrients to other organisms
Factors that effect deep ocean currents
Temp and salinity
Hydrosphere, biosphere, atmosphere
Hydrosphere: earths water systems; atmosphere: earths air; biosphere: all living systems
Factors that influence ocean currents(3)
- weather
- rotation
- continents
What is Thor Heyerdahl famous for
Sailed from Peru to Polynesian islands on a wooden raft to prove his theory that ocean currents carried ancient Peruvians across the pacific
What was Thor Heyerdahl’s rafts name
Kon-Tiki
Largest surface current
Gulf Stream; it moves more then 25x more water then all of the rivers in the world
What 3 factors affect surface currents
- global winds
- Coriolis effect
- Continental deflections
Global wind directions near the equator
East to west
Global wind directions near poles
West to east
What way do ocean currents in the northern hemisphere move
Clockwise
What way do ocean currents in the Southern Hemisphere move
Counter clockwise
Are all ocean currents connected
Yes
Deep currents are affected by
Density salinity
Do ocean currents follow a regular pattern
Yes
Where is a sea breeze and a land breeze coming from
Sea:sea
Land:land
What type of pressure do warm and cold air have
Warm air:low
Cold air:high
Differences in air pressure are caused by
Unequal earth heating
During bag the day does land heat up faster then water
Yes
At night does the land cool faster then the water
Yes
In high pressure areas, are there clouds
No
