V. Give titles to every passage of text a.

VI. Retell the text according to the plan:

1) The origin of oceanography.

2) The first exploring oceanographic expedition.

3) The cause of ocean formation.

4) Our watery planet.

5) The aim of studying the oceans.

Тext В

Ocean basins and continents are unevenly distributed over the earth's surface. Most of the land lies in the northern Hemisphere. We may consider it to be the land hemisphere, while the Southern is clearly the water hemisphere. Viewed from space looking down at Antarctica , the world ocean is a broad band surrounding Antarctica with three northward projecting gulfs.

Although we are dealing with only one ocean  the world ocean, for convenience here it is divided into three parts: the Atlantic (including the Arctic Sea), the Indian and the Pacific Ocean.

The Pacific Ocean  the largest of the three ocean basins  is nearly as large as the Indian and Atlantic oceans combined. It contains slightly more than half of the water in the world ocean. The Pacific has the greatest average depth (12.000ft). Relatively few rivers discharge into the Pacific Ocean.

In contrast to the Pacific, the Atlantic Ocean is a relatively narrow twisted body of water, bounding by nearly parallel continental margins. Including the Arctic Sea, the Atlantic Ocean has the greatest north-south extent. It connects the northen and southern Polar regions. Because of the many shallow adjacent seas (Carribean, Mediterranean, Baltic, Gulf of Mexico and the Atlantic Sea ) and broad continental shelves, the Atlantic is the shallowest of the three oceans. Many rivers, including the world's two largest, the Amazon and Congo rivers , discharge into the Atlantic.

The Indian Ocean is bordered by Africa and Asia. The Indian Ocean extends only a short distance across the equator into the Northern Hemisphere. The average depth of the Indian Ocean is intermediate between the Atlantic and Pacific ocean averages.

Assignments

I. Transcribe the following geographical names:

Northern, Southern, Antarctica, Pacific Ocean, Carribean, Medi­terranean, Baltic, Gulf of Mexico, Arctic Sea, Congo, Africa, Amazon, Asia.

II. Answer the following questions:

1) How are land and water distributed over the earth ? 2) Which hemisphere contains more water ? 3) Are oceans separated by land masses ? 4) How many oceans are there on earth ? 5) Which ocean is the largest ? 6) What is the average depth of the Pacific ? 7) Which ocean connects the Northern and Southern polar regions ? 8) What ocean is the shallowest ? 9) Place the three oceans according to their depths. 10) What are the world's largest rivers ?

GRAMMAR EXERCISES

I. Translate the sentences paying attention to the Sequence of Tenses:

1) He asked if the baby had been named Marie. 2) I did not know that my friend had failed in chemistry. 3) They thought I could drive a car. 4) The boy said he had scarcely enough money to return home. 5) I knew he was experimenting steadily for hours. 6) They said that they had chosen their way and nothing turn them from it. 7) We considered that she had already obtained her Master's degree in mathematics. 8) The student said that he could not translate the article without a dictionary. 9) He asked if he might keep this book as long as he needed it. 10) They told the children that the weather was fine and they could have a for two hours.