Chapter 23 Flashcards
a large body of saline water that may be surrounded by land
sea
Modern oceanography began with the ___.
Japanese ship CHIKYU
Scientists use sonar to ___.
calculate ocean floor depth
What does SONAR stand for?
SOund Navigation And Ranging
To see the bottom of the ocean for himself or herself while remaining connected to a research ship, a scientist would use ___.
a bathysphere
The flattest regions on Earth are ___.
abyssal plains
The deepest place in Earth’s crust is ___.
a trench
An atoll will eventually become a ___.
guyot
a cylinder of sediment collected by drilling
core sample
Sediments from rivers are spread over the continental rise and abyssal plains by ___.
turbidity currents
The silica in biogenic sediments comes mainly from ___.
diatoms and radiolarians
Earth’s second-largest ocean
Atlantic Ocean
sediment wedge at the base of the continental slope
continental rise
remains of marine plants and animals make this
biogenic sediment
Earth’s smallest ocean
Arctic Ocean
fine silt- and clay-sized rock particles
mud
potato-shaped lump of minerals
nodule
Where on the ocean floor are nodules found?
abyssal plains
Earth’s largest ocean
Pacific Ocean
steep slope from continental shelf to the deep-ocean basin
continental slope
fine sediment made mostly of silicon dioxide
siliceous ooze
extends from the coast of Antarctica to 60°S latitude
Southern Ocean
fine sediment made mostly of calcium carbonate
calcareous ooze
deep V-shaped valley in the continental margin
submarine canyon