Science test Flashcards
about what percentage of the earth’s surface is covered by oceans
71%
When water is described as potable, it means it is what
Safe to drink aka clean
are sections of the oceans that are more of less surrounded by land
seas
which ocean covers the largest percentage of the earth’s surface
pacific ocean
accoriding to the young earth theory god created our crurrent ocean basins on day 3
false
which of these is a strip of land that separates the coastal region from the ocean beach shore sandbar
shore
global mean sea levels currently are doing what falling rising
rising
this forms when large waves first break adn drop sand
longshore sandbar
the shalllow dubmerged edges of a continent are called ________ ______
continental shelf
which of these do young earth creationitsts believe were most likely created by runoff from the continets late in the flood coral reefs guyots trenches or dubmarine canyons
submarine canyons
Which of the following does not belong with the other three mid ocean ridge seamont or continetal rise
continetntal rise
_________ are suberged mountian ranges on the ocean floor at the spreading margins of of oceanic tectonic plates
mid ocean ridges
a submerged mountain or hill rising from the sea floor is a +___________
seamount
the deepest measured depth of the ocean is about 11,000m
true
island arcs are associated with subduction zones
true
the larges barrier reef in the world is found off the coast of Africa
false
a coral reef separated from the mainland by a lagoon is called a what
barrier reefs
coral need light to grow and therefore can only grow in shallow water
true
_____________ are sometiems called the rainforests of hte sea
coral reefs
how much minearl sal does 1000 g of seawater contain
35 grams
one difficulty for young earth cretionists is that the old earth model gives a good explanation for the amount of alst in seawater
false
the most abundant salt found in ocean water is whta
chloride
the goal of desalination is to make water what
potable
distillation is a method of desalaintaing seawater to provide fresh water
true
the water in the chesapeake bay is bracksih and therefore saltier than the water in the Atlanitc ocean
false
the term bracksih is mot closely to the _______ of a sampl of water
salinity
sound travels in seawater _________- than in air
faster
seawater has a lower freezing point than freshwater
true
as you asend from the ocean floor temperatures will likely increase or decrease
increase
as you ascend from the ocean floor presssure will moslty likely increase or decreacse
decrease
as you ascend from the ocean floor density would most likely increase or decrease
decrease
echolocation is an ability in some sea creatuers which man has used as a model in developing sonar
true
in which life zone must organims cope with the greatest variability of conditons
intertidal zone
which of thse would be described as pelagic snail seaweed scallop squid
squid
because clams corals and anemones are attached to or live on the bottom we call them ________ organisms
benthic
the zone where bioluminescence is the onlly form of natural light is the littorla zone
false
marien snow woudl be the msot important to orgaimsms living in what zone
abyssal zone
which of these is the most imporatn element in food for marien life carbon hydrogen oxygne
carbon
