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Chapter 4 Vocab

Chapter 4 in Science

QuestionAnswer
sonar system that uses sound waves to calculate the distance to an object (sound navigation and ranging)
continental shelf gently sloping shallow area of the ocean floor and extend outward from a continent
continental slope the steep edge of a continental shelf
abyssal plain the smooth almost flat region of the ocean floor
mid-ocean ridge continuous range of mountains that winds around Earth
trench a canyon in the ocean floor
plates pieces of Earth's crust along with the upper parts of the upper mantle
seafloor spreading when magma goes through the cracks between the diverging plates and hardens, creating a new strip of rock
internal zone the highest high-tide line on the land
neritic zone extends from the low-tide line out to the edge of the continental shelf
open-ocean zone beyond the edge of the continental shelf
Plankton tiny algae and animals that float in the water and are carried by waves and currents
Nekton free-swimming animals that can move throughout the water column
Benthos organisms that inhabit the ocean floor
food web all the feeding relationships that exist in a habitat
estuaries coastal inlets or bays where fresh water from rivers mixes with the salty ocean water
atoll a ring-shaped reef surrounding a shallow lagoon
bioluminescence the production of light by living things
hydrothermal vent hot water rises out of cracks in the ocean floor
aquaculture the farming of saltwater and freshwater organisms
nodules metal that concentrates around pieces of shell forming black lumps
Created by: kgreene10
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