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Ch 06 - Landforms and their Evolution11th Fundamentals of Physical Geography

Landform vs. Landscape

What is the fundamental geographical distinction between a 'Landform' and a 'Landscape'?

DEFINITION

Scale of Observation

Landform: A small to medium-sized tract or parcel of the Earth's surface (e.g., a specific hill, valley, or sand dune).
Landscape: A much larger tract of the Earth's surface that is made up of several related landforms.
Evolution: Each individual landform possesses a physical shape, size, and material composition resulting from the action of geomorphic processes over time.

Prism Memory Hook

Landform Single Unit, Landscape The Whole Painting

Stages of Landform Evolution

What is meant by the 'Evolution' of landforms, and what are the three conceptual stages of this process?

CONCEPT

Transformation Over Time

Definition: Landform evolution refers to the sequential stages of transformation from one physical landform into another.
The Life Cycle Analogy: Geomorphologists categorize a landmass's development into three distinct stages:
1. Youth
2. Mature
3. Old Age
Primary Drivers: This ongoing evolution is continuously driven by changes in climate and the tectonic vertical/horizontal movements of landmasses.

Prism Memory Hook

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Dominant Stage of Downward Erosion

In which specific stage of landform development does 'downward cutting' (vertical erosion) dominate?

FACT

The Youth Stage

Reason: During the early (youth) stage of development, streams flow over very steep slopes, giving the water extremely high kinetic energy.
Result: The water aggressively engages in vertical erosion (down-cutting) to reach its base level, which rapidly forms deep, V-shaped valleys and narrow gorges.

Prism Memory Hook

Youth Vertical

Also in this chapter

67 more cards to study in Prism

4Running Water as a Geomorphic Agent
5Characteristics of a Youthful River
6Characteristics of a Mature River
7Characteristics of an Old River
8The Evolution Sequence of a Valley
9Gorge vs. Canyon
10Potholes and Plunge Pools
11Knick Points and River Rejuvenation
12Incised (Entrenched) Meanders
13River Terraces: Paired vs. Unpaired
14Formation of Alluvial Fans
15Deltas vs. Alluvial Fans
16Active vs. Inactive Floodplains
17Natural Levees and Point Bars
18The Mechanics of Meandering
19Formation of Oxbow Lakes
20Braided Channels
21Prerequisites for Karst Topography
22Swallow Holes, Sinkholes, and Dolines
23Lapies
24Uvalas (Valley Sinks)
25Blind Valleys
26Stalactites and Stalagmites
27Karst Pillars
28Glacial Landforms: Erosion vs. Deposition
29Continental vs. Mountain Glaciers
30Glacial Erosional Processes
31Roche Moutonnée
32Cirques and Tarns
33Horns and Arêtes
34Glacial Trough vs. River Valley
35Truncated Spurs
36Fjords
37Paternoster Lakes
38Glacial Till vs. Outwash Plains
39Classification of Moraines
40Eskers
41Drumlins
42Kettle Lakes
43The Source of Wave Energy
44Characteristics of High Rocky Coasts
45Characteristics of Low Sedimentary Coasts
46The Formation of Sea Cliffs and Terraces
47Sea Stacks
48Blow Holes and Geos
49Composition of Beaches
50Coastal Sand Dunes
51Bars vs. Spits
52Barrier Bars
53Tombolos
54Lagoon Formation and Evolution
55Pediments
56Formation of Pediplains
57Peneplain vs. Pediplain
58Inselbergs vs. Monadnocks
59Bajadas
60Bolsons
61Playas and Alkali Flats
62Deflation Hollows (Blowouts)
63Mushroom (Pedestal) Rocks
64Barchans vs. Parabolic Dunes
65Seif Dunes
66Longitudinal vs. Transverse Dunes
67Loess Deposits
68Emergent vs. Submergent Coastlines
69The Base Level of Erosion
70Drainage Patterns

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11th Fundamentals of Physical Geography

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