CBSE Class 7 Social Science Surface Landforms Change Assignment

CBSE Class 7 Social Science Assignment-Surface Landforms Change. Students are advised to refer to the attached assignments and practice them regularly. This will help them to identify their weak areas and will help them to score better in examination. Parents should download and give the assignments to their children for practice.

Q. 1 Give suitable term to the following:

i) Different sections of the river.

ii) Functions performed by the river.

iii) The river’s most important action in the upper course.

iv) The valley which becomes deep and narrow, with steep, wall-like sides after being eroded by

the river.

v) These are called large gorges.

vi) One feature formed when the river descends from a higher-level to a lower-level.

vii) Sediments deposited by river.

viii) The bow-shaped lake.

Q.2 Fill in the blanks.

i) The s-shaped bends formed by the river are called as____________.

ii) Deltas are formed at____________.

iii) The rivers draining into _______________do not form deltas.

iv) ______________________is the largest delta in the world.

v) A pile of rocks deposited by glaciers is called_____________.

vi) The action of wind is more prominent in _______and ______________.

vii) Mushroom rocks are features caused by the action of________.

viii) The thickest loess deposits are found in_____________.

Q 3 Define the following.

i) Oasis ii) Lagoon iii) Delta

Q.4 Complete the following table.

Agents Of Erosion Features Or Landforms Formed Examples

River Upper Course

Middle Course

Lower Course

Ice

Wind

Waves (Marine Erosion)

Q.5 Match the two columns-

A B

i) Estuaries a) Beaches and lagoons

ii) Glaciers b) Do not involve transportation

iii) Wind c) Mushroom rocks, sand dunes

iv) Weathering, Erosion, Mass movement d) Denudation

v) Weathering e) Moraines

vi) Chilika f) Humus

vii) Soil g) Largest lagoon (Orissa)

Q. 6 Name and label the following diagrams.

1.

2.

Q.7 Draw the different sections of a River’s Course and label its features.

Q.8 Answer the following questions.

i) What are the factors that influence the rates of weathering and erosion?

ii) Describe the formation of a delta.

iii) How can we conserve soil?

iv) Differentiate between weathering and erosion.

Q.9 Give reasons.

i) In an estuary no delta is formed.

ii) The action of wind is more prominent in dry regions.

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