Download Chapter 19 Study Notes: The Ocean Basins

Chapter 19 Study Notes:
The Ocean Basins
1
• A ________ ______ is part of the
continental margin.
– continental
– shelf
2
• A large body of saline water that may
be __________ by land is a _____.
– surrounded
– sea.
3
• A _______ is made up of minerals.
– nodule.
4
• A piece of sediment collected by
drilling is a ____ ______.
– core
– sample.
5
• Continental _________ are made up
of the continental rise, continental
slope, and continental shelf.
– margins
6
• __________ plate boundaries cause
deep ocean _______.
– Convergent
– trenches.
7
• _________ _____, ______, and
____________ are tools used by
scientists to study the deep ocean.
– Drilling ships,
– sonar,
– bathyscaphs
8
• Earth’s oceans cover about ______
th’s of Earth’s _______.
– ¾ th’s
– surface.
9
• _________ from turbidity currents
creates ________ canyons and the
continental rise.
– Erosion
– submarine
10
• Most _____-______ ridges form
_______ sea level.
– mid– ocean
– below
11
• Ocean sediments are _______ on the
_______ plains.
– thinnest
– abyssal
12
• Of all the water on Earth, ____ is
found in the _______.
– 97%
– oceans.
13
• Scientists use ______ to calculate
the ______ of the ocean floor.
– sonar
– depth
14
• ________ are most likely to form in
_____ _______.
– Seamounts
– hot
– spots.
15
• _________ from rivers spread over
the deep-ocean basins by means of
________ _________.
– Sediments
– turbidity
– currents.
16
• ________________ stands for
“SOund ______________________
And Ranging”.
– SONAR
– Navigation
17
• _______ uses sound waves to
measure the sea floor.
– Sonar
18
• The continental ____ has a ______
slope and usually has less than 100
meters of water above it.
– shelf
– gentle
19
• The _____ and largest ocean on
Earth is the _______.
– deepest
– Pacific.
20
• The _______ place in Earth’s crust is
a _________.
– deepest
– trench.
21
• The first step in a ______
transmission is to send out a series of
_______ waves.
– sonar
– sound.
22
• The _______ regions on Earth are
__________ plains.
– flattest
– abyssal
23
• The _________ ________ is best
known for its depth.
– Mariana
– Trench
24
• The _____-_______ ridges in Iceland
are unusual because they rise _____
sea level.
– mid– ocean
– above
25
• To see the bottom of the ocean for
him or herself while remaining
connected to a research ship, a
scientist would use a
_____________________.
– bathysphere.
• In addition to these notes study the
diagram on the top of pages 476-477
so that you can identify the different
features found on the seafloor
including the following:
continental shelf, continental
slope, continental rise, trench,
mid-ocean ridge, abyssal plain