Geography 101: Introduction to Geography - Geographic Traditions Four Traditions Earth Science CultureEnvironment Locational Area Analysis

What This Is

Geographic traditions are four distinct approaches to understanding the Earth's surface and how it changes. These traditions help us analyze and interpret the complex relationships between the physical environment, human culture, and location. For example, the eruption of Mount Pinatubo in the Philippines in 1991 is a classic case of the Earth Science tradition in action, where the movement of tectonic plates led to a massive volcanic eruption that affected global climate patterns.

Key Processes, Landforms & Theories

• Subduction (convergent plate boundary): An oceanic plate sinks beneath a continental plate, forming volcanic arcs and trenches – the Andes are a classic example.
• Longshore Drift: Sediment is transported along a coast by an angled wave approach – responsible for the formation of spits like Spurn Head (UK).
• Weathering: The breakdown of rock in situ, without movement – common in arid regions like the Sahara Desert.
• Erosion: The removal and transport of rock and soil – occurs through processes like glaciers and rivers, such as the Grand Canyon (USA).
• Deposition: The accumulation of sediment, often in a new location – seen in the formation of sand dunes like the Erg Chebbi (Morocco).
• Tectonic Uplift: The movement of the Earth's crust, causing mountains to form – responsible for the Himalayas, the highest mountain range on Earth.
• Glacial Erosion: The removal of rock and soil by moving ice – shaped the landscape of the Scottish Highlands.
• Delta Formation: The deposition of sediment at the mouth of a river, creating a new landform – the Ganges-Brahmaputra Delta in India is a prime example.
• Karst Landscapes: Formed through the dissolution of soluble rocks like limestone – seen in the Mammoth Cave System (USA).
• Coral Reef Formation: The growth of coral polyps, creating a new ecosystem – the Great Barrier Reef (Australia) is the world's largest coral reef system.

Step?by?Step Application

1. Identify a landform from a contour map: Look for changes in elevation, such as a steep slope or a flat area, and use the contour lines to determine the shape and size of the landform.
2. Explain the formation of a waterfall: Start with the source of the river, where it flows over a steep slope or a rock face, creating a waterfall. As the river flows downstream, it erodes the rock and creates a plunge pool. Over time, the waterfall recedes upstream, creating a series of rapids and waterfalls.
3. Calculate river discharge: Use the formula Q = A * v, where Q is the discharge, A is the cross-sectional area of the river, and v is the velocity of the water. You can estimate the area and velocity from a map or diagram.
4. Analyze a geographic pattern: Look for relationships between different variables, such as climate, vegetation, and topography. Use a map or diagram to identify patterns and trends, and try to explain the underlying causes.

Common Misconceptions

• Misconception: Deserts are always hot.
• Correction: Deserts can be hot or cold, depending on the location and climate. For example, the Gobi Desert in China is cold and dry, while the Sahara Desert in Africa is hot and dry.
• Misconception: Water in a river flows faster on the inside of a meander.
• Correction: Water in a river actually flows faster on the outside of a meander, due to the increased velocity as the river flows around the bend.
• Misconception: Plate tectonics causes volcanoes everywhere.
• Correction: Plate tectonics is responsible for the formation of volcanoes at subduction zones and hotspots, but not everywhere. For example, the Hawaiian Islands are formed by a hotspot, while the Andes are formed by subduction.

Exam / Short?Answer Tips

• Draw and annotate a labelled diagram: Use a clear and concise label, and make sure to include all the necessary features.
• Explain a process or landform: Use a clear and concise explanation, and make sure to include relevant examples and evidence.
• Distinguish between related concepts: Use clear and concise language, and make sure to include relevant examples and evidence.
• Include place-specific detail: Use specific examples and evidence from a particular location or region.

Quick Practice Scenario

A river curves sharply, cutting into the outer bank while depositing sediment on the inner bank. Name the feature and explain the process.

Answer: Meander, with erosion on the outer bank and deposition on the inner bank.

Last?Minute Cram Sheet

• Earth Science tradition: Focuses on the physical environment and the processes that shape it.
• Culture-Environment tradition: Examines the relationships between human culture and the physical environment.
• Locational tradition: Analyzes the relationships between location and the physical environment.
• Area Analysis tradition: Examines the relationships between different variables within a specific area.
• Subduction: An oceanic plate sinks beneath a continental plate.
• Longshore Drift: Sediment is transported along a coast by an angled wave approach.
• Weathering: The breakdown of rock in situ, without movement.
• Erosion: The removal and transport of rock and soil.
• Deposition: The accumulation of sediment, often in a new location.
• Tectonic Uplift: The movement of the Earth's crust, causing mountains to form.
• Glacial Erosion: The removal of rock and soil by moving ice.
• Delta Formation: The deposition of sediment at the mouth of a river, creating a new landform.
• Karst Landscapes: Formed through the dissolution of soluble rocks like limestone.
• Coral Reef Formation: The growth of coral polyps, creating a new ecosystem.
• Weathering is not the same as erosion: Weathering breaks down rock in situ, while erosion removes and transports rock and soil.