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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(1-liter) soda cup. Of the biosphere in this cup, almost 30 ounces (.88 liter) are ocean. Given the immense size of the oceans, it is 8 Introduction not surprising that they hold a lot of life. Of the 33 animal phyla (or categories of animals) on Earth, 30 consist of ocean dwellers. If you’re interested in learning more about the oceans and why they need to be protected, this book is a great place to start. As you read, keep in mind that this is just a small sampling of what scientists have

Cardy/Getty Images 70 Geological Oceanography Clastic Sedimentation Most clastic sediment—rock and soil eroded from the land—is first deposited on the continental shelf, mainly in tidal environments, in deltas, and along beaches. The rest of the sediment continues out to sea. Winds and currents carry fine-grained particles offshore where they ultimately settle to the ocean floor. Along the continental margins, sediment is carried by so-called turbidity currents, which flow downhill because

waters to reach high tide and approximately another six hours for falling waters to reach low tide. This sequence is called the tidal cycle. The complete cycle takes 12 hours and 25 minutes and is then repeated. The amount of change in the water level during a tidal cycle is known as the tidal range. Tides are caused by the gravitational pull of the Sun and the Moon on Earth’s water. When the Sun, Moon, and Earth form a straight line (top), higher and lower tides than usual are generated. In

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

use it to make their own food. These microorganisms form the bottom of the food chain: some animals living near the vent eat the microbes or harbor them in their bodies, while other animals in turn eat those animals. Similar communities of organisms have been found around “cold seeps,” places where fluid rich in dissolved methane and other minerals seeps up through the ocean floor. The microorganisms at the base of a seep community obtain energy from methane or sulfur compounds and form a mat

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