Samacheer Kalvi solutions for Social Science [English] Class 9 TN Board chapter 2.02 - Lithosphere – 2 Exogenetic Processes [Latest edition]

The disintegration or decomposition of rocks is generally called as

The process of the levelling up of land by means of natural agents.

______ is seen in the lower course of the river.

Karst topography is formed due to the action of

Which one of the following is not a depositional feature of a glacier?

Deposits of fine silt blown by wind is called as

Stacks are formed by ______

______ erosion is responsible for the formation of cirque.

Match the following:

1. ‘I’ Shaped valley is an erosional feature of the river
2. ‘U’ Shaped valley is an erosional feature of the glacier
3. ‘V’ Shaped valley is an erosional feature of the glacier.

Statement I: Running water is an important agent of gradation Statement II: The work of the river depends on the slop of land on which if flows

Statement: Limestone regions have less underground water.

Reason: Water does not percolate through limestone.

Define weathering.

What do you mean by biological weathering?

Mention the three courses of a river with any two land forms associated to each course.

What are ox-bow lakes?

How does a sea cave differ from a sea arch?

List out any four karst topographical areas found in India.

What do you mean by a hanging valley?

Define: Moraine

Define Drumlin.

Define Esker.

Mention the various features formed by wind erosion.

What is a wave cut platform?

Give Reasons:

Chemical weathering is predominant in hot and humid zones.

Give Reasons:

Silt deposits are less at estuaries than deltas.

Give Reasons:

Wind can possibly erode the rocks from all sides.

Distinguish between physical and chemical weathering.

Distinguish between Delta and Estuary.

Distinguish between Stalactite and stalagmite.

Distinguish between Longitudinal and Transverse sand dunes.

Distinguish between Inselbergs and yardangs.

Distinguish between Spit and bar.

Write a note on weathering classify and explain.

Explain the erosional landforms formed by underground water.

What is a glacier?

Explain types of glaciers.

Describe the depositional work of winds.

On the given outline map of the world, mark the following.

1. Any two deltas
2. A Karst region
3. Any two hot and cold deserts.

Is wind the only gradational agent in the desert?

Underground water is more common in limestone areas than surface run off. Why?

The river channels in the lower course are wider than the upper course.

Chemical alternation of carbonate rocks on lime stone region.

Flat surfaces near cliffs.

Erosion + Transportation = Deposition.

The bottom line of a snow field.