Book: Our Environment
Chapter: 3. Our Changing Earth
Subject: Social Science - Class 7th
Q. No. 5 of Exercise
Listen NCERT Audio Books - Kitabein Ab Bolengi
Activity.
Observe the photographs given below. These are various features made by a river. Identify them and also tell whether they are erosional or depositional or landforms formed by both.
1. Name of the feature: Waterfall
It is both erosional and depositional activity of the rivers. When the river tumbles at steep angle over very hard rocks or down a steep valley side it forms a waterfall.
2. Name of the feature: Meander
It is an erosional activity of the rivers. As a river enters and flows through the plains, it bens along its way and forms meanders.
3. Name of the feature: Flood plain
It is both erosional and depositional activity of a river. As it floods, the river water deposits layers of fine soil and other material called sediments along its banks. This leads to the formation of a flat fertile floodplain.
More Exercise Questions
Match the following.
(i) Glacier | (a) Sea shore |
(ii) Meanders | (b) Mushroom rock |
(iii) Beach | (c) River of ice |
(iv) Sand dunes | (d) Rivers |
(v) Waterfall | (e) Vibrations of earth |
(vi) Earthquake | (f) Sea cliff |
(g) Hard bed rock | |
(h) Deserts |
