Courses of River

Digital lesson plan

Name of the teacher    : Aparna Suresh

Subject                            : Social Science

Class                                : 9B

Chapter                           : By The Hands Of Nature

Topic                               : Courses of a River

Date                                 : 28.09.2022

Learning outcomes

1. Students will be able to analyse the origin and flow of a river

2. Students will be able to understand different stages of a river

3. Students will be able to evaluate the reason for formation of different landforms near river

Introduction

Teacher shows a video of flowing river and asks students to share their views and experience about river.

https://youtu.be/rl4SldJ76JE

Then teacher explains different Courses of rivers and its peculiarities.

Courses of a river

The river is divided into 3 different parts.

1. Upper Course – This part is closest to the source of the river. The land is usually high and mountainous. The river is fast flowing in this part.

2. Middle Course – In this part the river starts to slow down. It gets wider and starts travelling in winding loops. There is a lot of erosion, deposition and transportation.

3. Lower Course – It is the last course of the river. In this part, the river approaches the sea. The speed of the river is the slowest in this part.

Activity

Teacher ask the Students to discuss in groups about the erosional and depositional features and various landforms of water.

What are the Main Features of a River?

There are many features of a river, which can be broadly classified into erosional features and depositional features.

Below table gives the list of features of a river

Erosional Features

 1. Interlocking Spurs

2. Meanders

3. Ox-Bow lakes

4. V-shaped valleys

5. Waterfalls

Depositional Features

 1. Deltas

2. Flood Plain

3. Levee’s

Concluding Activity

Teacher shows two videos and asks the Students to analyse and write a breaf note on it.

Follow up activities

Collect pictures of different erosional and depositional landforms of water and make a collage.

Landslide

 Landslide

Learning outcomes

• Students will be able to analyze the process of landslide

• Students will be able to evaluate the causes and consequences of landslide

• Students will be able to define landslide and remedial measures.

  Landslides, also known as landslips are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, shallow or deep-seated slope failures, mudflows, and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradients, from mountain ranges to coastal cliffs or even underwater, in which case they are called submarine landslides.

PPT Landslide 

Watch my vedio on landslide

Summery

A landslide is defined as the movement of a mass of rock, debris, or earth down a slope. Landslides are a type of "mass wasting," which denotes any down-slope movement of soil and rock under the direct influence of gravity. The term "landslide" encompasses five modes of slope movement: falls, topples, slides, spreads, and flows. These are further subdivided by the type of geologic material (bedrock, debris, or earth). Debris flows (commonly referred to as mudflows or mudslides) and rock falls are examples of common landslide types.

Questions

1. When a boulder tumbles down a hillside, it's a good example of what type of landslide?

2. If a large amount of debris, rock and soil slides down a slope, it is what type of landslide?

3. Land slide can be defined as?

Fill out the questions below