ocean study stack
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Name five of earths oceans and which one of them is the biggest. | Indian ocean, atlantic ocean, paciffic ocean, southern ocean, artic ocean. Pacific is the biggest.
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| Explain how earths oceans became salty. | Each of the oceans washed up onto shore and collected rocks, salt, and sand with it, slowly breaking down the rocks.
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| whats the diffrence between seawater and brackish water? | brackish: fresh water mixed with sea water between 1ppt and 17ppt.
sea water: water from an ocean that has 35ppt.
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| define salinity. | a measure of the mass of dissolved solids in a mass of water.
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| what is the saltiest body of water out of the main 5 oceans (Atlantic, pacific, southern, Indian, artic.) | the Atlantic ocean.
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| what are the 2 most common elements in water? | hydrogen and oxygen.
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| what 2 things combine to make salt? | Clorine and sodium.
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| what is an Esturarie? | a partly enclosed coastal body of brackish water.
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| what is an hydrothermal vent? | a fissure in a planets surface, heated water issues..
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| give me 3 regions of a continental margin. | 1. continental shelf
2. continental rise
3. continental slope
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| what are 4 criteria scientists use to classify ocean zones? | 1. sunlight
2. tempature
3. salinity
4. density
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| what are the minerals you can find under the ocean? | manganese nodels, gold, and zinc.
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| describe a surface zone. | shallow sea water that recieves the most sunlight. most plants live in the surface zone.
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| describe a middle zone. | faint blue/green light into the ocean.
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| describe a deep zone. | (midnight zone) where there is NO LIGHT, and plants don't grow.
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| point out 2 sources of water for earths oceans. | 1. asteroids/comets in condensation
2. water vapor expelled from volcanoes
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| what are abyssal plains? | larges flat areas of the sea floor.
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| why do water molecules attract to each other? | because of their negative and positive charges.
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| is water adhesion or cohesion? | water is adhesion
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| can water be a solid liquid or gas? | water can be all 3
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| cause: in winter, the surface water of a pond cools to 0 degrees Fahrenheit. | effect: the density decreases and the ice isolates the water below.
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| the density of freshwater is LOWEST at 4 degrees Celsius. True or False? | False its at its GREATEST.
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| the particles of liquid water are CLOSER TOGETHER than the particles of the same volume of frozen water. True or False? | True.
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| if its winter, and the top of the ice is frozen, is the bottom? why? | no, because its warmer then the top of the ice so animals can live under the ice where its the temp. they like it.
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| how does ice float on water/ | because the ice is less dense than the water below it.
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lailahbyron3
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