Landforms Flashcards

1
Q

Karst topography is due to ?

A

Lime Stone, dolomite and gypsum rocks. As atmospheric co2 reacts with the water to form weak acid this reacts with rocks of caco3 forming giving rise to Karst topography.

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2
Q

Horst and grabens are seen in mountains and plateaus, due to karst topography we too get them on rocks, they are called as

A

Grikes and clints

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3
Q

Characteristics of karst topography

A
  1. Absence of surface drainage
  2. Formation of springs
  3. Appearance of sink holes(several shallow holes come together to form sink holes), uvalas(several sink holes come together to form dolines)several dolines come together to form uvalas, sallow holes(smaller depressions)
  4. depositional landforms : stalactites and stalagmites and pillars
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4
Q

Stalactites and stalagmites are seen in

A

Depositional land forms of karst topography

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5
Q

Depositional landform of karst topography are ?

A

Stalagmites and stalactites and pillars

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6
Q

Stalagmites are seen hanging or from below

A

From below they are grown

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7
Q

Stalactites are seen above or below

A

Above the cave, they are hanging

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8
Q

Depositional landforms are formed due to ?

A

The water containing absorbed caco3, either water got evaporated or the co2 present in it was gone

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9
Q

Ice age is seen in which period

A

Pleistocene period

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10
Q

What are called ice caps of the world ?

A

Green land and Antarctica

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11
Q

What is called a snow line

A

Are where snow is permanently found

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12
Q

Temperature decreases as we go up (altitude), In what measure

A

6.5 degrees centigrade per kilometer

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13
Q

The mealting go accumulated snow during day time and formation of hard granular during night is called

A

Neve in french and FIRN in german

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14
Q

Arm chair shaped or horse shoe shaped basin produced due to downward movements of glacier it is called ?

A

CIRQUE

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15
Q

DEEP vertical cracks developed at the head of the glacier, especially seen in summer, it is called

A

BERGSHCRUND

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16
Q

CRACKS developed due to when a glacier is bent on a stone

A

CREVASSES

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17
Q

Developed when two cirques or Corries cut back on adjacent sides, what is it

A

Aretes -> sharp knife like narrow ridges

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18
Q

When 3 or more Corries or cirques cut back then we get what topography

A

Pyramidal peaks or Angular horn

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19
Q

Only U shaped valleys are seen when ?

A

When the glaciers move we cannot see the V shaped valleys

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20
Q

When the main glacier flows the valley floors are of greater depth when compared to the valleys of the tributary glaciers because

A

Main glacier has more erosive power than the tributary glacier

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21
Q

Natures bulldozers are what

A

Glaciers

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22
Q

The rocks which are taken by the glacier are called

A

Moraines

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23
Q

Moraines are of 4 types name them

A

Medial moraines, lateral moraines, terminal moraines, end moraines

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24
Q

Unsorted glacial deposits reuslts in to formation of

A

Glacial plains, so remember we get glacial plains also in glacial topography

25
Q

Boulders of various sizes, are left stranded in strange positions, because of melting of ice, it is called

A

Erratics

26
Q

Groups of oval elongated whale back mountains from boulder clays are called

A

Drumlins

27
Q

Hanging valleys are formed due to

A

Tributary glacier joins the main glacier forming hanging valleys

28
Q

Emerged coasts basic features

A
  1. It is formed either uplift of land or fall in sea level,
  2. Depositional features dominate
  3. These are less common
29
Q

Submerged coasts

A
  1. These are formed either due to sinking of land or due to rise of sea level
  2. Estuaries are prominent here.
  3. Erosional landforms dominate
30
Q

Sea cliffs characteristics

A

Most widespread landforms,

Steep natures, due to the wave induced erosion.

31
Q

Wave cut platforms

A

These are seen in coastal landforms,

The cliffs which are eroded forms a plain land it’s called wave cut platform.

32
Q

Erosional land forms of coastal land

List out them

A
Cliff,
Water cut platforms,
Sea caves,
Sea arches,
Sea stacks,
Stumps.
33
Q

Beaches and dunes

A

These are dominated by deposition,
Sand and gravels loosened from the land are moved with the help of waves thus forming beaches.
Dunes are just the elevated sand forms of beaches, mainly formed due to air

34
Q

Bars and spits and Tombolo are formed by

A

Bars - due to the continued process of long shore drift the bay edges gets connected forming bars.
Spit - these are also formed by the land shore drift but they are beginning stages of bars.
Tombolo - it is formed by joining the two land masses by a connecting bar.
Lagoon is formed when the sand bar is formed, as the ends are bay get connected, so lagoon are salt water lakes

35
Q

Deserts formed due to the rain shadow effect are called

A

Cold desserts

36
Q

these deserts lie in the high pressure belt and trade winds blow offshore,

A

Hot deserts

37
Q

Based on land scape the deserts are made into 4 types name them

A

Hamada,
Reg
Erg,
Badland topography- it consist of gullies ands ravines

38
Q

What is a Rocky desert called

A

Hamada

39
Q

What is a stony desert called

A

Reg

40
Q

What is a sandy desert called

A

Erg

41
Q

What is a gullies and ravines consisted desert called

A

Badland topography

42
Q

Bad land topography consists of

A

Gullies and ravines

43
Q

Three processes are employed in desert erosion find them

A

Deflation- sand particles are moved to another location.
Sand blasting - winds carry the sand and force them on the rock, as a sort of abrasion.
Attrition- wear and tear of particles as they rub each other

44
Q

Movement of particles it sand by wind is called

A

Deflation

45
Q

When the moved san particles are hit by rock and a sort of abrasion is seen it is called

A

Sand blasting

46
Q

When two stand particles rub each other, forming very minute particles called

A

Attrition

47
Q

Erosional desert landforms

A
Mushroom rock, 
Zuegen, 
yardang, 
mesas and buttes ,
Inselberg
Ventifacts 
Deflation hollow
48
Q

Wind erodes the base of rock this is called

A

Mushroom rock, also known as gour in Sahara desert

49
Q

Capped ink bottle topography

A

Zuegen

50
Q

Zugen is also called as

A

Capped ink bottle topography

51
Q

When the soft and Hard rock are placed vertically, we get what topography

A

Yardang

52
Q

Mesas and buttes

A

Hard rock on the above is called mesas and the small isolated mesas present hills are called buttes

53
Q

Hard rock on the above is called mesas and the small isolated mesas present hills are called

A

Buttes

54
Q

Desert erosion topography with canyons separating them

A

Mesas and buttes

55
Q

Isolated residual hills formed due to type presence of resistant rocks is called

A

Inselberg

56
Q

Depositional landforms

A

Sand dunes -> barchans ands seifs

Loess

57
Q

Barchans

A

Moon shaped or crescentic sand dunes.
Occurs generally in groups,
The lee ward is steep and concave.

58
Q

Seifs

A

Longitudinal dunes

59
Q

Hwang ho

A

Sorrow of china