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Our Changing Earth

Question
CBSEENSS7000672

Tick the correct answer.

(i) Which is not an erosional feature of sea waves?

(a) Cliff

(b) Beach

(c) Sea cave

(ii) The depositional feature of a glacier is

(a) Flood plain

(b) Beach

(c) Moraine

(iii) Which is caused by the sudden movements of the Earth?

(a) Volcano

(b) Folding

(c) Flood plain

(iv) Mushroom rocks are found in

(a) Deserts

(b) River valleys

(c) Glaciers

(v) Ox-bow lakes are found in

(a) Glaciers

(b) River valleys

(c) Deserts

Solution

(i) Which is not an erosional feature of sea waves?

(a) Cliff

(b) Beach 

(c) Sea cave

(ii) The depositional feature of a glacier is

(a) Flood plain

(b) Beach

(c) Moraine 

(iii) Which is caused by the sudden movements of the Earth?

(a) Volcano 

(b) Folding

(c) Flood plain

(iv) Mushroom rocks are found in

(a) Deserts 

(b) River valleys

(c) Glaciers

(v) Ox-bow lakes are found in

(a) Glaciers

(b) River valleys 

(c) Deserts

Some More Questions From Our Changing Earth Chapter

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

Give reasons.

(i) Some rocks have a shape of a mushroom.

(ii) Flood plains are very fertile.

(iii) Sea caves are turned into stacks.

(iv) Buildings collapse due to earthquakes.

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.

Photograph

Name of the Feature

Type

[Erosional or Depositional or Both]

For fun.

Solve the crossword puzzle with the help of given clues.

Across

Down

2. Loop like the bend of a river

1. Rise and fall of water caused by frictionof wind on water surface

4. Solid form of water

3. Flow of water in a channel

7. Moving mass of ice

5. Steep perpendicular face of a rock alongsea coast

9. Sudden descent of water in the bed of a river

6. Debris of boulder and coarse materialcarried by glacier

11. Natural cavity on weak rocks formed by action of waves

8. Crescent-shaped lake formed by a meandering river

12. Embankment on a river that keeps itin its channel

10. Fine sand deposited by the action of the wind

13. Large body of sea water

13. Isolated mass of rising steep rock near acoastline

14. Dry area where sand dunes are found

14. Alluvial tracts of land formed by river deposits at mouth of the river

15. Small hill of sand caused by the action of the wind

16. Flat plain formed by river deposits during time of flood