Solution
Question 1.
Rewrite the correct statement :
[Note : According to the Board ’s New Activity Sheet, only writing Correct or Incorrect is expected. Rewriting incorrect sentence recorrecting them it is not expected]
(1) The temperature range helps the wind in its work.
Correct :
(2) River’s work is more prominent than other agents of erosion in desert regions.
Incorrect :
(3) The work of groundwater is effective in the area with soft rocks.
Correct :
(4) The work of wind is not limited like river, glacier or the sea waves and takes place everywhere.
Correct :
Question 2.
Correct and rewrite the incorrect statements :
[Note : According to the Board ’s New Activity Sheet, only writing Correct or Incorrect is expected. Rewriting incorrect sentence recorrecting them it is not expected]
(1) The ice on the lateral side of the glacier moves faster than the ice at the base.
Incorrect :
(2) The depositional work by rivers happens because of gentle slope, reduced speed and transported sediments.
Correct :
(3) A river flows at a faster speed than the glacier.
Correct :
(4) The speed of the glacier is more on both the banks than in the middle.
Incorrect :
Question 3.
Identify the wrong pair :
(1) Deposition - V–shaped valley
(2) Transport - Ripple Marks
(3) Erosion - Mushroom Rocks
(1) Deposition - V–shaped valley
Question 4.
Identify and name the landforms in the following diagrams :
(A) V-shaped valley, (B) Gorge (canyon), (C) Delta
Question 5.
Complete the following table by classifying the landforms according to their agents of erosion.
(waterfall, delta, cirque, arête, barchans, moraine, pothole, mushroom rock, sinkholes, beach, pillars, lagoons)
| Rivers | Wind | Glacier | Sea waves | Groundwater |
Rivers
Wind
Glacier
Sea waves
Groundwater
waterfall, delta, pothole
barchans, mushroom rock
cirque, arête, moraine
beach, lagoons
sinkholes, pillars
Question 6.
Answer the following questions in brief.
(1) List the landforms that are a result of the erosional work of the rivers.
The landforms that are a result of the erosional work of the rivers are as follows: (i) Gorges (Canyons) (ii) V-shaped valley (iii) Potholes (iv) Waterfall.
(2) Which agent is responsible for formation of stalactites and stalagmites and where are they formed?
(3) List the landforms that are produced by the depositional work of the sea waves
The landforms that are produced by the depositional work of the sea waves are as follows : (i) Beach (ii) Sandbars (iii) Lagoons. (iv) Name the types of moraines.
(4) Name the types of moraines.