Investigating Earth's Oceans (Introduction to Earth Science)

Investigating Earth's Oceans (Introduction to Earth Science)

Language: English

Pages: 88

ISBN: 1615304975

Format: PDF / Kindle (mobi) / ePub

Describes the physical, chemical, and biological aspects of the world's oceans, including global tides, water masses, the plants and animals living in the oceans, and how scientists study each aspect.
Title: Investigating Earth's Oceans
Author: Anderson, Michael (EDT)
Publisher: Rosen Pub Group
Publication Date: 2011/08/15
Number of Pages: 88
Binding Type: LIBRARY
Library of Congress: 2010049489

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M manatees, 53 Mariana Trench, 64 mariculture, 48 Marine Biological Association, 17 Mediterranean Sea, 11, 35 Mid-Oceanic Ridge, 62 minerals, 17, 20–24, 51, 57, 58, 67, 68, 70, 73–75, 76 Mississippi River Delta, 22 mussels, 49, 58, 71 N National Oceanic and Atmospheric Administration (NOAA), 16 nekton, 43–44, 49, 53 North Atlantic Ocean, 10, 13, 62 North Pacific Ocean, 10 North Sea, 11 O ocean, origin of word, 11–12 oceanic crust, 19, 62, 66–68 oceanography biological, 17, 20, 42–58 branches,

not possible to estimate what fraction of these anions has been removed from the seas. Salinity and Density of Seawater The salinity of ocean water is given as a percentage. It is defined as the ratio of the weight of salt in a given volume of water to the weight of the water. The usual notation is in parts per thousand indicated by the symbol 0⁄00. Thus, ocean water with a salinity 27 Investigating Earth’s Oceans of 35 0⁄00 has 3.5 pounds (1.6 kilograms) of salt in each 100 pounds (45.4

The primary herbivorous animals of the sea, copepods are vital to marine ecosystems. 49 Investigating Earth’s Oceans Diatoms Tiny one-celled organisms called diatoms are found by the billions in all the waters of Earth. The largest of them are barely visible to the unaided eye, and the smallest are less than a thousandth of an inch long. Biologists classify diatoms as golden or golden-brown forms of algae. Like other algae, diatoms have no leaves, stems, roots, or flowers, but the cell of

each half grows a new shell on its exposed surface. Two diatoms may combine after shedding their old shells. The united cells then separate into two new individuals, each of which grows a new pair of shells. Some species reproduce by means of spores. In cold waters, where diatoms are most plentiful, the dead and the discarded shells may form thick deposits on the bottom. After long ages, the shell deposits turn into a porous mineral mass called diatomite (also called diatomaceous earth,

Most of the animal species belong to groups that also live in shallower marine environments. These include many kinds of invertebrates, or animals without backbones, A close view of a Humboldt squid at night in the Gulf of California, Mexico. Brian J. Skerry/National Geographic Image Collection/ Getty Images 55 Investigating Earth’s Oceans such as worms and squids, octopuses, clams, and other mollusks. More than a dozen families of marine fishes are represented. Most deep-sea animals are

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