"Inland Waters of North America". Internal waters of Russia. Types of inland waters Rivers Rivers Rivers Rivers Lakes Lakes Lakes Swamps Swamps Swamps Glaciers Glaciers Glaciers Underground water Underground. What are the major rivers that flow through North America?

Perennial

permafrost

What are the major rivers that flow through North America?

The largest river system ....

MISSISSIPPI

(from the Indian "misi sepe" - a great river)

with the Missouri tributary

(named after the Indian tribe that lived on its shores).

The river has a large basin, collects water from the Rocky Mountains, the Appalachians, from the Central and Great Plains. The Mississippi is full of water all year round, flooding in the spring due to snowmelt and summer rains. In the lower reaches, it winds, forms many islands in the channel.

Task: compare the rivers of North America with the rivers

other continents, draw a conclusion.

Table "The largest rivers in the world."

To which oceans do the rivers of North America carry their waters?

Which ocean basin is larger? What are the main sources of food for rivers?

Presentation on the topic "Internal waters of Russia. Rivers." 8th grade

1. Internal waters.

2. Rivers of Russia.

3. Basic concepts.

4. Dependence of rivers on relief and climate.

5. Fall and slope of the river.

6. Feeding rivers.

7. Rec mode.

8. Natural phenomena on the rivers.

9. Rivers of our region

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Slides captions:

Inland waters. Rivers of Russia.

Lesson plan. 1. Internal waters. 2. Rivers of Russia. 3. Basic concepts. 4. Dependence of rivers on relief and climate. 5. Fall and slope of the river. 6. Feeding rivers. 7. Rec mode. 8. Natural phenomena on the rivers. 9. Rivers of our region. 10. Repetition.

1. Using fig. 34 § 12, name the components of inland waters. Inland waters. rivers lakes swamps groundwater artificial reservoirs glaciers

Rivers of Russia. Arctic Ocean Pacific Ocean Internal runoff Atlantic Ocean Ob Amur Volga Don 21-2,3 + atlas p.

3. Recall the basic concepts: Source; Mouth; River basin. bed; floodplain; Terraces. 21-5

Mountain rivers - stormy, fast 4. How does the relief affect the nature of the flow of rivers?

The rivers are flat - slow, calm

5. Fall and slope of the river. H¹ is the source height; H² - mouth height; H¹ - H² = N (m) - fall. U - slope; Y \u003d H / L, where L is the length of the river (km). Example: Determine the fall and slope of the Lena River (source height - 930 m, mouth - 0 m). H \u003d 930 - 0 \u003d 930 m; Y \u003d 930 m / 4400 km \u003d 2.1 cm / km Conclusion: the river is flat

6. Feeding rivers: Remember what kind of food rivers have? rain snow ground glacial mixed What kind of food prevails near the rivers of our country? mixed 17, 18

River regime - the behavior of the river during the year. Why do you need to know the regime of rivers? 11-16

Rivers with spring flood

9. What is low water? – The lowest water level in the river.

8. What is a flood? – The annual rise in the water level in the river as a result of snowmelt.

10. What is a flood? A short-term rise in the water level in a river as a result of heavy rains.

11. What is the annual flow? This is the amount of water flowing in a river bed in a year.

flood 12. What natural phenomena can be associated with rivers?

rivers of our region. Terek