Chapter 19 Study Notes: The Ocean Basins

Chapter 19 Section 1 The Water Planet

1 Earth’s oceans cover about ______ th’s of Earth’s _______. ¾ th’s surface

2 Of all the water on Earth, ____ is found in the _______. 97% oceans

3 The _______ and largest ocean on Earth is the _______. deepest Pacific

4 _________ _____, ______, and ____________ are tools used by scientists to study the deep ocean. Drilling ships sonar submersible

5 A piece of sediment collected by drilling is a ____ ______. core sample

6 Scientists use ______ to calculate the ______ of the ocean floor. sonar depth

7 _______ uses sound waves to measure the sea floor. Sonar

11 To see the bottom of the ocean for him or herself, a scientist would use a ___________ submersible

Features of the Ocean Floor Chapter 19 Section 2 Features of the Ocean Floor

1 Continental _________ are made up of the continental rise, continental slope, and continental shelf. margins

2 The _______ place in Earth’s crust is a _________. deepest trench

3 __________ plate boundaries cause deep ocean _______. Convergent trenches

4 The _______ regions on Earth are __________ plains. flattest abyssal

5 A _______ is made up of minerals. nodule

6 The _____-_______ ridges in Iceland are unusual because they rise _____ sea level. mid ocean above

7 ________ are most likely to form in _____ _______. Seamounts hot spots

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