A child builds a sandcastle and the next morning it is gone. What caused it to disappear?
the changing of the tides
the salinity of the water
the moving currents in the water
the changing of water pressure
The ocean floor _____.
is a flat bed of sand
is covered by the same amount of water everywhere
has mountains, plains, and ridges like land surfaces
covers less area than land
Based on this marine food web, which 3 organisms eat squid?
krill, penguins, and leopard seals
leopard seal, elephant seal, and killer whale
leopard seal, penguin, and elephant seal
zooplankton, cod, and leopard seal
Only specially adapted organisms can survive at the bottom of the ocean because___.
the salinity is very low at the bottom of the ocean
the pressure is very high at the bottom of the ocean
the water is very warm at the bottom of the ocean
the sunlight is very bright at the bottom of the ocean
Using the ocean floor diagram, what part of the ocean floor is A?
continental slope
continental shelf
trench
abyssal plain
The measurement of salt in the water in a sample is called _____.
salinity
millimeter
plankton
nutrient
Using the ocean floor diagram, what part of the ocean floor is C?
continental shelf
abyssal plain
mid ocean ridge
island
Using the ocean floor diagram, what part of the ocean floor is F?
continental slope
abyssal plain
seamount
continental shelf