Purpose: to reveal the patterns of circulation of ocean currents. Tasks:. consider the scheme of ocean currents and prove the presence of wind and runoff currents; to identify the general patterns of the currents of the World Ocean; Ability to present information visually and orally. design. Type of activity: design.

“There is a river in the ocean. It does not dry up even in the most severe droughts and does not overflow its banks during the most powerful earthquakes. Its banks and bed are made of cold water, and its rapids are made of warm water... Nowhere in the world is there a more majestic stream of water. It is faster than the Amazon, faster than the Mississippi, and the mass of both rivers, taken together, will not be a thousandth of the volume of water that it carries. Oceanographer M.F. Maury.

Types of sea currents Wind (drift); with uneven distributions of temperatures or salinity (density); Tidal due to the attraction of the moon; gradient when changing -atmospheric pressure; stock; compensatory at low tide of the neighboring water mass and others. The currents are divided vertically: surface, subsurface, intermediate, deep, near-bottom. By physical properties: cold, neutral, warm.

Latitude Constant atmospheric pressure Constant winds 60 degrees low West 30 degrees high Trade winds N-E 0 degrees low 30 degrees high Trade winds SE 60 degrees low West Distribution of atmospheric pressure belts and constant winds on Earth.

About a year ago, the Atlantic Ocean changed its currents

Regularities Regularities Wind currents have a latitudinal direction, and runoff currents have a meridional direction. Warm currents flow from the equator to the poles, and cold currents from the poles to the equator. Neutral currents move along the equator. Warm currents flow along the eastern coasts of the continents, and cold currents flow along the western coasts. In the northern hemisphere, the circular motions of currents are carried out clockwise, and in the southern hemisphere - counterclockwise.

Significance of sea currents Significance of sea currents Permanent surface currents are of great importance for navigation (trade winds, warm Gulf Stream, cold Peruvian and others), temporary and periodic (breeze, tidal). Currents affect: the circulation of the atmosphere, the movement of ice, the enrichment of water with oxygen, the erosion of the coast, the movement of plankton, and, consequently, the distribution of fish and marine animals.

Currents are like rivers in the ocean, but these “rivers” do not have solid banks and are constantly pulsating, wandering within their boundaries. Currents consist of separate jets that branch, merge, bend, change speed, form eddies (rings) that break away from the current.

"Homogeneous and non-homogeneous definitions" - A small river that dries up in places was picturesque. A young, naive, almost childish smile never appeared on his lips. Homogeneous and heterogeneous definitions. Place punctuation marks. The red-hot coastal stones dried up. A flat field sparkling under the sun cuts a deep ravine. 2) Verbs in the 3rd person plural. h.

"The chemical element phosphorus" - The most important compounds. Phosphorus. Formed during combustion. Relative atomic mass. electronic formula. Receipt. theoretical material. Chemical properties. Allotropic modifications of phosphorus. characteristics of phosphorus. Loose powder. Shows properties of acidic oxide. Application. physical properties.

"Rights of a teenager" - And if you are 14 years old, then a teacher must be present during the interrogation. Need to know. Education. Horse racing. "Rules of mutual betting on hippodromes" do not contain age restrictions. Parental responsibility ceases when the child reaches 18 years of age. However, persons over the age of 16 are allowed to play Bingo.

"Dash at the subject and predicate" - Make a few sentences with a dash. Correct mistakes. Gold autumn. Punctuation marks. The tireless work of thought. The use of a dash between the subject and the predicate. Just a good friend of mine. Give the correct explanation for punctuation. Conditions for placing a dash. giant factories. Find the wrong sentence.

"Tasks "Noun"" - Insert the missing letters. Lesson - travel. Friday is an enemy, but a real brother! How to check words with an unstressed vowel? Task 7. Read the text. Generalization of the studied on the topic "Noun". Write out the nouns enclosed in brackets. I was tormented by the unknown. Write down 3 words of proper nouns.

"Signs and Symbols of Art" - Pablo Picasso. Signs and symbols of art. The skull is a reminder of the inevitability of death. Still life with fish. I. Strauss. The complex inner world of the artist is often revealed through symbols. N. Rimsky-Korsakov. Vanity. Flight of the Bumblebee. Violin and grapes. Hourglass and mechanical clock - the transience of time.

Total in the topic 23687 presentations

List of terms

Archipelago

Peninsula

ppm

Salinity

Bay of Fundy

Sour Bay on the Kola Peninsula

White Sea

Penzhina Bay in the Sea of ​​Okhotsk

Wavelength

wave height

"Yes or no"?

• The main part of the hydrosphere is the waters of the oceans?

2. Only in the driest desert does the air not contain water vapor?

3. The continuous process of moving water from ocean to land and from land to ocean is called the World Water Cycle?

5. Is a large piece of land, washed on all sides by the waters of the oceans, called an island?

6. The largest ocean in terms of area - the Atlantic?

7. Is Greenland the largest island by area?

8. "Sea without shores" is in the Indian Ocean?

9. The widest strait on Earth - Magellan?

10. Does the Bering Strait connect two seas, two oceans, separate two states, two peninsulas, two continents?

11. Is a peninsula half of an island?

12. Is the sea a part of the ocean separated from it by islands or peninsulas?

13. Tides are caused by the attraction of water by the Moon?

A bottle was found in the sea off the coast of Murmansk. It was sealed with sealing wax. A note was found in the bottle:

The ship "Saint Mary" is wrecked off the coast of North America. We have hit an iceberg. Our coordinates are 42 gr. NL and 50 gr. h.d. We ask for help. 1523, November, 23 number "

Lesson topic:

"Ocean currents"

Shmelkova E.A. geography teacher MBOU "Krasnoseltsovskaya secondary school"

The purpose of the lesson:

To form an idea of ​​ocean currents, to improve the ability to work with a physical map of the hemispheres, a map of the oceans, contour maps.

• What are the currents?
• How are they formed?
• Why do some point away from the equator and others toward the equator?
• How is current different from waves?
• What is the speed of the water in the current?
• What current is the fastest, most powerful, the widest?
• How do warm currents differ from cold ones?

The flow is...

… movement of water in the ocean in a horizontal direction. It's like a river without banks.

How are currents formed?

The reason for the currents is constant winds.

Trade winds and westerly winds.

The most powerful current in the World Ocean is the current of the West Winds.

Its width is 2500 km, speed is 3.5 km/h. Length 30,000 km.

Gulfstream

Current speed 10 km/h

Width - hundreds of kilometers

Length 3000 km.

• What is the significance of currents in nature and human life?
• What is the pattern in the distribution of currents?

(Currents away from the equator are warm, while currents towards the equator are cold.

Currents form cycles. Clockwise in the Northern Hemisphere, counterclockwise in the Southern Hemisphere.

On the eastern coasts of the continents, the currents are warm, and on the western coasts, they are cold.

• Draw five warm currents and five cold currents on the contour map. Red arrows indicate warm, blue arrows indicate cold. Label the currents along the arrows.
• Find on the map a unique current that is directed away from the equator, but is cold.

(Monsoon current in the Indian Ocean)

• Why is the Peru current holon?

(It is directed from temperate latitudes to the equator)

Section 39.

Answer the questions at the end of the paragraph.

Complete the task in the contour map.