Presentation on the topic ten rivers. Presentation for the lesson on the topic: Rivers of Russia

Rivers and the world around us

River definition

A river is a water stream with a certain flow along the channel. The river is fed by underground runoff from the riverbed. The flow of a river is determined by the location of its mouth and source. Water is collected in the river in several ways:

Due to precipitation (rain, snow)

Due to groundwater reserves.

Origin of rivers

Rivers generally flow where there is least resistance. This is usually in tectonic faults.

Studying rivers

A certain section in hydrology (the science of water) - potamology - is devoted to the study of rivers. It is here that scientists study the structure of rivers and their networks, flow, etc.

Source and mouth of the river

The source of the river is the beginning from where the reservoir originates. The mouth, on the contrary, is the place where the river flows. Rivers can flow into lakes, other rivers or seas. Those rivers that flow into seas or lakes are called main, and those that connect at the mouth with another river are called tributaries. A river with tributaries is called a river system.

Ebb and flow of rivers

All rivers are limited by banks. During melting snow or excessive rainfall, the water level rises and sometimes exceeds the coastline. The phenomenon when water overflows its banks is called a flood.

River classification

Rivers are classified according to different criteria.

In size they are:

Large or large. These rivers mainly include lowland rivers. Their basin must have an area of at least 50 thousand square km.

Average. For such rivers the minimum is set at 2 thousand square meters. km.

Small ones. Small rivers are all those whose basin does not reach an area of 2000 km.

Topographically:

Mountain. Such rivers in most cases flow with fast currents and large gradients. Some of them may blur.

Plains. Lowland rivers sometimes reach enormous sizes. They are characterized by the presence of channel meanders. Often it is lowland rivers that are part of a river system, flowing into another, main river.

Other river classifications

There are a huge number of classifications of rivers. For example, rivers can be classified by water sports capabilities or tributary networks, etc.

The role of the river in human life

Since ancient times, the river has been one of the sources of human life. Rivers are a source of fresh water as well as food. Catching river fish saved people from starvation. And today, the role of rivers cannot be underestimated. They are of great economic and political importance.

Largest rivers in the world

The Amazon and Nile rivers are considered the largest rivers in the world. In our country, the largest river is the Yenisei.

Slide 12 underground rivers

Most rivers flow over the surface of the land. However, there are underground rivers on the planet, those that flow in underground caves. The most famous underground rivers are the Hamza and Puerto Princesa. They are the largest.

6th grade

Lesson topic– “Rivers”

The purpose of the lesson: To form an idea of the river and its parts
Lesson type – learning new material

Tasks :

Educational: to form in students an idea of the river and its parts; introduce the concepts: source, mouth, tributaries, river basin, watershed; teach to identify the left and right tributaries of the river.

Educational: develop the ability to work with text; develop the ability to work in groups; develop the ability to work with various cards.

Educational: to instill in students a sense of love for their homeland, pride in their land and respect for the world around them.

Leading concepts of the lesson : source, mouth, tributaries, river basin, watershed.

Equipment : Projector, computer, presentation, handouts, 6th grade atlas.

During the classes

Stage/time

Teacher activities

Student activities

Means of education

Organizational moment, 1-3 min

Greeting, checking absentees, checking readiness for the lesson (ready for the lesson, notebooks, pencil cases)

Good afternoon guys!

The teachers are greeted, the headman calls the absent ones

The stage of preparing students for active and conscious learning of new material, 3-8

Learning new material, 8-38 min

The topic of our lesson today will be a geographical object about which there are many songs, poems and riddles.
Here is one of them:

“In winter I hide,
I appear in the spring
I have fun in the summer
In the fall I go to bed.
It pours into it, it pours out of it,
She trudges along the ground on her own.
A snake lay down on my way,
It's crawling, but it won't let me pass,
It crawls, remaining in its place.
Do you know what I'm talking about?

“It flows, it flows, it won’t flow;

He runs, he runs, but he won’t run out.

It's not a horse, it's running

It’s not a forest, but it’s noisy.”

What are they talking about?

Right! Today in class we will talk about rivers!
-What do you know about rivers?

What would you like to know?

I think that during the lesson we will find answers to all your questions.

The purpose of our lesson will be to form an understanding of the river and its parts.

Now let's open our notebooks and write down the topic of our today's lesson "Rivers"

Let's look at the map. You see many blue threads. These are all rivers.

There are almost 20 million rivers on earth, but only 53 of them are more than 1000 km long. And in Russia there are more than 200 thousand, large and small rivers.

What is a river?

Let's summarize your answers and conclude that " River- this is the flow of water flowing in the depression it has created,” on maps the direction of the river’s flow is usually shown with an arrow.

And the area of the earth's surface from which all the water flows into the river is called the drainage basin of this river.
River basin – this is a piece of land from which all the water flows into the river

On the slide, the river basin is shown in yellow.

The boundary separating neighboring river basins is called a watershed - for example, mountains.

Watershed – boundary separating river basins.

Indeed, on one side of the watershed, water flows into one river, and on the other, into another. In the mountains, the watershed runs along the crests of the ridges, on the plains - along their most elevated part; on the slide, the watershed is shown with a dotted line.

And now guys, we will study the structure of the river.

In the last lesson, you and I, in our notebooks, drew a table that we will all fill out together today.

Also, in the last lesson you divided into groups and chose captains. Each group is responsible for its part of the river: 1st group - Source, 2nd group - Mouth and 3rd group - Tributaries.

Each group has the following items on the table:
1) Grade 6 atlases

2) A sheet with the number and name of the group, as well as the task that needs to be completed, strictly following the plan written on this sheet. (The table is filled out by the captain and used by him when answering at the board.)

3) The text “Rivers” which you will use to complete tasks and prepare an answer.

4) You will accompany your speech with examples, which are depicted both on your cards that lie on the table and on the presentation slide.

5)You also have a “River Diagram” on your desks, you will work with it at the end of the lesson, so I ask you to put it aside

Each group fills out only its own column in the table; you will fill in the remaining columns as the other group responds.

After the speech of the captain of the 3rd group, each of you should have a completely completed table.

You are given 5 minutes to prepare your answer, and the answer should not exceed 3 minutes.

You will be given grades for your work in class, which will depend on the quality of your performance and activity in class. For violation of discipline in class, the grade will be reduced.

Get started.

The preparation time is over, I ask the captain of the Istok group to make a report.

Source

Estuary

Tributaries

Examples:

Oka river-spring
Moscow river-swamp
Angara river - lake
Terek river - from the mountains

Estuary – the place where a river flows

Where might the river flow?

Examples:
Volga river - into the sea
Selenga river - into the lake
Irtysh river - into the river

What tributaries does the river have?

(right and left)

Thank you, now captain of the Ustye group.

Source

Estuary

Tributaries

Source - the place where the river begins

Where can a river start from?

(from a spring, from a swamp, from a lake, in the mountains)

Examples:

Oka river-spring
Moscow river-swamp
Angara river - lake
Terek river - from the mountains

Estuary – the place where a river flows

Where might the river flow?

(into the sea, lake, or other river)

Examples:
Volga river - into the sea
Selenga river - into the lake
Irtysh river - into the river

Tributary - a river that flows into a larger river

What tributaries does the river have?

(right and left)

How to determine which inflow is right or left?

(Stand facing the current and there will be a right tributary on the right, and a left tributary on the left).

Captain of the "Tributes" group

Source

Estuary

Tributaries

Source - the place where the river begins

Where can a river start from?

(from a spring, from a swamp, from a lake, in the mountains)

Examples:

Oka river-spring
Moscow river-swamp
Angara river - lake
Terek river - from the mountains

Estuary – the place where a river flows

Where might the river flow?

(into the sea, lake, or other river)

Examples:
Volga river - into the sea
Selenga river - into the lake
Irtysh river - into the river

Tributary - a river that flows into a larger river

What tributaries does the river have?

(right and left)

How to determine which inflow is right or left?

(Stand facing the current and there will be a right tributary on the right, and a left tributary on the left).

Thanks to the captains for their performance! You should end up with a completed table like this.

Teachers listen

About rivers!

They are different, deep and shallow, large and small, mountainous and flat.

What is a river, what other types are there?

Open the notebooks and write down the topic in the notebook.

Looking at the map

Teachers listen

Different answer options

Write down the definition in your notebook

Listen to the teacher, write down the definition in a notebook.

Teachers listen

Students read the text and formulate answers to the questions posed.

Messages are answered

Write down definitions in a notebook

Messages are answered

Write down definitions in a notebook

Consolidation, 38-43 min

Now let's consolidate the knowledge we gained today and complete the task on cards with a river diagram. Your task is to indicate with arrows the correspondence between the numbers on the map and the name of the part of the river.

Let's check what happened. We raise our hand to answer.

Now pass your card to the neighbor on the right and let’s conduct mutual control:

5 correct answers and no corrections – great

4 correct answers or one correction – very good

3 correct answers or 2 corrections – it’s worth asking for help

1-2 correct answers – you need to look at the definitions.

Each participant completes the task on the card.

Answer the task

Organizational moment, 43-45 min

So, what did we learn in class today?

What did you learn?

Marking

Thank you for the lesson!

We learned what a river is, became familiar with the concepts of source, mouth, tributaries, river basin and watershed, and also learned to identify left and right tributaries.

They come up with diaries for signature, say goodbye to the teacher

If you have time left, you can work with the students on the map.

Now, using the map of Russia, let's name the largest rivers in Russia!