Presentation on the topic of water resources. Presentation on the topic "Water Resources of the World"

The world

Topic: Water resources of our region

Lesson type: learning new material

Target: create conditions for familiarizing students with the diversity of reservoirs in our region, revealing the importance of reservoirs in nature and human life; contribute to the formation of ideas about reservoirs, about natural and artificial reservoirs, about reservoirs of the country, about parts of the river; develop interest in the subject “The world around us”

Planned educational results

Subject: will have the opportunity to learn how to work with a textbook; form the concept of a river and its parts, teach to distinguish between bodies of natural and artificial origin, recognize them by description; to form concepts of the importance of bodies of water in life

Personal: have a responsible attitude towards learning; show readiness and ability for self-development and self-education based on motivation to learn

Meta-subject results

Cognitive UUD: search for the necessary information in the textbook; find patterns; observe and draw your own conclusions

Regulatory UUD: be aware of the task, accept it, strive for its successful solution; plan your actions; monitor and evaluate your work

Communication UUD: willingness to listen to the interlocutor and conduct a dialogue, express your opinion and argue your point of view

Basic concepts: reservoirs, source, channel, mouth, tributaries

Equipment: TV, laptop

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Lesson on the surrounding world on the topic “Water wealth” 4th grade Municipal state educational institution “Krymrozovskaya secondary school” Primary school teacher Tomko Valentina Vasilievna

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Parts of the river. What is the beginning of the river called? Source What is the mouth of a river? The place where a river flows into another river, lake or sea is called the mouth. Mouth What is a river bed? A channel is a depression through which a river flows. The river has a right and a left bank. How to identify them? If you look towards the flow of the river, the right bank will be on the right, and the left bank on the left. Right Bank Left Bank On its way, the river meets other rivers and streams that flow into it and give up their water. They are called tributaries. Left tributary Right tributary

"The water resources of our region"

RESERVOIR Natural Artificial? Created by nature Created by man River, sea, lake, ocean, swamp. Pond, canal, reservoir

TAIGAN RESERVOIR

NORTH CRIMEA CANAL

What importance do bodies of water have for nature and humans?

Wastewater Garbage Fertilizers and pesticides Vehicle washing

Reflection In today's lesson I learned.. In this lesson I would praise myself for... After the lesson I wanted... Today I was able to...

On the topic: methodological developments, presentations and notes

Water resources of our region

The world around us Topic: Water resources of our region Lesson type: learning new material Purpose: to create conditions for students to become familiar with the diversity of water bodies of our region, to reveal the significance of water bodies...

Water resources of our region

The presentation is intended to familiarize students with some of the rivers of our region. Where do they originate, where do they flow, the flora and fauna of these rivers......

Waters suitable for use.

In a broader sense - in O waters in liquid, solid and gaseous states and their distribution on Earth.

Inland waters of Russia

Straybulova A. N.

4. What applies to inland waters?

Inland waters

Rivers

Lakes

Swamps

Glaciers

Artificial reservoirs

The groundwater

Our country is rich in significant river systems. All rivers are of great importance for the national economy. Rivers are used for navigation, generating electricity, irrigating fields, water supply to populated areas, and fishing.

The rivers of Russia receive water from rain, melting snow, glaciers and underground drains. Almost all rivers in Russia freeze in winter.

In Russia, there are more than two million small rivers, or 99.9% of the total number of watercourses. Only 0.1% falls on medium and large watercourses. Small rivers feed the main arteries, determine their flow, purity and life. Therefore, if large rivers become shallow, the reasons should be sought in their tributaries, since a significant part of the river flow occurs through them.

Each river system represents a unity economically, socially and environmentally. Small streams are important local resources. These rivers are widely used in various areas of the national economy: they create small hydroelectric power stations, water mills, and are used for water supply, agricultural production, irrigation and recreation.

Rivers of Russia

Arctic Ocean basin – 2/3 S of the country

Ob (Irtysh, Ishim, Tobol), Lena (Vilyuy, Aldan),

Northern Dvina, Olenyok, Khatanga, Yenisei (Angara, Lower Tunguska, Podkamennaya Tungussk), Pechora, Yana, Indigirka, Kolyma.

Pacific Ocean basin - about 20% of the country

Shilka, Argun, Amur (Zeya, Bureya, Ussuri), Anadyr.

Inland drainage basin – about 10% of the country

Volga (Oka, Kama), Ural, Terek.

Atlantic Ocean basin - about 3% of the country's S

Western Dvina, Volkhov, Don, Kuban, Dnieper.

The influence of topography on rivers

A fall– the excess of the river source over the mouth (in meters). Source height – Mouth height = Fall.
Slope= Drop (in cm)/Length (in km).

Climate influence on rivers

Annual flow- the amount of water that the river

carries out per year (in km).

Water consumption– the amount of water that flows

through a cross section of a river per unit time

River mode– intra-annual distribution of runoff.

Nutrition

rain
glacial
snowy
ground (underground)
mixed

flood

Solid waste– small particles (silt, clay, sand) that the river carries.

Lena River Delta

Natural disasters associated with the river

What is a flood?
What does it lead to?
What is their reason?
Where in our country do floods most often occur?
How is the magnitude of flood damage estimated?
What flood protection methods do you know?

1 slide

2 slide

Relatively recently, water was considered one of the free gifts of nature. But recently this attitude has changed, especially since fresh water resources account for 2.5% of the volume of the hydrosphere, most of which are glaciers in Antarctica, Greenland, Arctic ice, mountain glaciers, which are practically inaccessible for use.

3 slide

The main source of meeting humanity's needs for fresh water is river water - 47 thousand km3, of which only 1/2 can actually be used. Fresh water consumption is about 5 thousand km per year. In addition, its main consumer is agriculture, where irrecoverable water consumption is very high, especially for irrigation.

4 slide

Resource availability Fresh water reserves on Earth are distributed extremely unevenly. In the equatorial zone and in the northern part of the temperate zone it is available in abundance and even in excess. The most water-rich countries are located here, with more than 25 thousand m3 per capita per year. In the arid zone of the Earth, which covers about 1/3 of the land area, the water shortage is especially acute. The most water-scarce countries are located here, with less than 5 thousand m3 per capita.

5 slide

Consumption of water resources Area of consumption Consumption volumes Agriculture 69% Industry 21% Utilities 6% Reservoirs 4%

6 slide

More than 1 billion people in Asia do not have access to clean water. In Africa - 350 million. In Latin America - 100 million.

7 slide

Only 1/3 of the population uses good-quality water, 1/3 is insufficiently provided with it, and another 1/3 uses poor-quality drinking water. Consumption of poor-quality water is the source of 3/4 of all diseases and 1/3 of deaths.

8 slide

Ways to solve humanity's water problem are reducing the water intensity of production processes and reducing water losses. construction of reservoirs (USA, Russia) regulating river flow. territorial redistribution of river flow (USA, Canada, Australia, India, Mexico, China, Egypt, CIS countries) transportation of icebergs from Antarctica

Slide 9

collection of rain and melt water in underground storage facilities closed recycling economy stopping the discharge of industrial, agricultural and municipal wastewater into inland waters and seas. desalination of sea water (used in the countries of the Persian Gulf, the Mediterranean, in Turkmenistan on the Caspian Sea) Ways to solve the water problem of humanity

Lukonina Svetlana

Slide 2

The watery shell of the globe - oceans, seas, rivers, lakes - is called the hydrosphere.
It covers 71% of the earth's surface. The Earth has a colossal volume of water of about 1.5 billion km³. However, 98% of this volume is salt water, and only 28 million km³ is fresh water.

Slide 4

The importance of water in the world economy

Habitat for aquatic organisms, a source of valuable proteins (in the form of fish and other organisms)
It is used in almost all sectors of the economy: in the energy sector, for irrigation of agricultural land, for industrial, municipal and domestic water supply.

Slide 5

Water reserves

The volume of water on Earth reaches almost 1.5 billion km³. But the bulk of fresh water (almost 80%) consists of water from glaciers, snow covers, and underground ice of permafrost. Currently they are not used and are considered as potential water resources. The simultaneous volume of river waters on land is small - only 2000 km³.

Slide 6

World water balance

Municipal water supply.
Industrial water supply.
Water supply for agriculture.

Slide 7

Municipal water supply

Water consumption standards per person average 120-150 liters per day. But in cities in industrialized countries, water consumption is especially high. For example, in European countries it rises to 300-400 l/day

Slide 8

Plants and factories require a lot of water. For energy needs alone, 320 km³ of water is taken from water sources, while 20 km³ is lost. With the development of industry, water consumption is increasing, and at the same time, water pollution from industrial waste is increasing.

Slide 9

Water supply for agriculture

The largest water consumer is agriculture. Runoff from livestock farms is a particular problem. They are extremely overloaded with organic compounds and cause particularly rapid pollution of water bodies.

Slide 10

Water resource availability is measured by river flow per capita
population per year. Among the regions of the world, Australia and
Oceania – 83 thousand m³ per person per year. This is not so much due to the abundance of water,
How much with the sparse population of this part of the planet.

Slide 11

The countries with the most water resources in the world include Suriname, Gabon, Canada, New Zealand, and Norway.
Countries experiencing a shortage of fresh water: Kuwait, Libya, Saudi Arabia, Israel, Egypt.

Many of these countries use seawater desalination plants.

Slide 12

Causes of fresh water shortage

urban growth
creation of powerful industrial centers
pollution of water bodies with domestic and industrial wastewater;
Reduction of water flow in rivers; (consequences of deforestation, plowing of floodplains and drainage of swamps);
Reduced ability of water bodies to self-purify (they cannot cope with such a volume of waste);
Excessive consumption and pollution of groundwater (shallowing of rivers and lakes)

Slide 13

Problems related to the use of water resources

Fresh water reserves are by no means unlimited, and practically uncontrolled industrial discharges threaten to destroy the ecosystem of many water bodies.
The pulp, paper and chemical industries destroy all life in rivers and lakes.
ill-conceived construction of reservoirs and dams (especially on the Volga) lead to the almost complete disappearance of many fish species.
groundwater pollution.

Slide 14

Measures to protect water resources

savings on production and at home
wastewater treatment;
development of new technologies that ensure maximum recycling of industrial waste;
stopping the discharge of untreated wastewater
creation of water protection zones adjacent to water areas;
planting trees and shrubs in the coastal strip of rivers.

View all slides

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