External Geological Processes and Risks: Weathering and Erosion
External Geological Processes and Risks
Introduction
This document explores the phenomena occurring in Earth’s crust due to the interaction of rocks with the atmosphere, hydrosphere, and living things. These processes include weathering, erosion, transportation, and sedimentation.
Weathering
Weathering is the alteration of rocks on Earth’s surface without the transportation of the resulting materials. These materials remain near the weathered rock. There are three main types of weathering:
- Mechanical
Meteorology and Climatology
Read MoreINTERFERENCE WITH CLIMOGRAMS:
With respect to total rainfall, the rainfall distribution throughout the year indicates the month of maximum and minimum rainfall. It also shows whether or not secondary maximum or minimum rainfall occurs.
With respect to temperature: the average annual temperature oscillation (or annual temperature range) is the difference between the average temperature of the warmest month and the average temperature of the coldest month.
It is also necessary to indicate whether there
Chalcolithic Period: The Dawn of Metallurgy and Societal Transformation
Chalcolithic Period: The Dawn of Metallurgy
The Bridge Between Neolithic and Bronze Age
The Chalcolithic period, also known as the Copper Age, represents a crucial transitional phase between the Neolithic and Bronze Age. It marks the time when humans began experimenting with and utilizing metals like copper and gold, even before the widespread adoption of bronze. This period witnessed significant advancements in various aspects of human life, laying the foundation for the advancements of the Bronze
Read MoreGeological Actions of Groundwater, Ice, Wind, and Sea
Geological Actions of Groundwater
Rainwater and snowmelt seep into the ground if the rocks are permeable or fractured. This water, known as groundwater, percolates downward until it encounters impermeable layers like clay. These layers trap the water, forming aquifers.
Aquifers
Aquifers consist of two main zones:
- Zone of Saturation: The layer completely filled with water.
- Zone of Aeration: The area between the ground surface and the zone of saturation.
The top of the saturated zone is called the groundwater
Read MoreThe English Vowel and Diphthong System: A Comprehensive Guide
The English Vowel System
The English vowel system of Received Pronunciation (RP) is generally considered to consist of twelve pure vowels and eight diphthongs.
What is a Vowel?
In phonetics, a vowel is a speech sound characterized by the continuous vibration of the vocal cords (voicing) and the absence of any narrowing or obstruction of the airflow. The quality of a vowel phoneme distinguishes it from others and is primarily determined by the position of the tongue body and the shape of the lips.
The
Read MoreUnderstanding Energy Sources & Biogeochemical Cycles
Natural Gas
Natural gas is a mixture of combustible gases found underground, often associated with liquid petroleum. The primary component is methane, with smaller proportions of other hydrocarbons like ethane, butane, and propane. Natural gas formation parallels oil formation, resulting from the fermentation of accumulated sediment matter. Initially, natural gas found in oil fields was burned off as waste. However, the need for new energy sources and the discovery of vast natural gas reserves led
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