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Physical Geography

Physical geography covers the topics relating to the surface of the earth - the landforms, glaciers, rivers, climate, oceans, earth-sun interaction, hazards, and more.
  1. Climate (30)
  2. Hazards and Disasters (34)
  3. Time and Time Zones (21)
  4. Water and Ice (36)

Overview of the United States Forest Service
Learn about the United States Forest Service’s history, how it is organized, its divisions and its current research.

Mountain Building
An overview of mountain building and how geomorphologic processes contribute to the building and breaking of mountains.

Land Tides or Earth Tides
Learn information about the causes of land tides or earth tides, how they are monitored, and why they are important from Geography at About.com.

Wildlife Corridors
A wildlife corridor is an area of open space or wildlife habitat that connects other areas of open space or habitat. They are often surrounded by areas of developed land and provide a safe passage for various species across roads and other dangerous, human-developed areas.

Aurora Borealis or Northern Lights
An overview of the Aurora Borealis or Northern Lights - learn how they're formed, where to see them, and how they're predicted.

Megadiverse Countries
Megadiversity is extreme biodiversity found in a small number of countries worldwide. Most megadiversity is found in tropical regions of the world.

Plate Tectonics
Learn about the development and history of plate tectonics, from its innovation by Alfred Wegener to how scientists today understand how the plates of the Earth's lithosphere move.

An overview of the supercontinent of Pangea, which covered one-third of the planet and began to break up about 200 million years ago to form the modern continents of today.

An overview of biomes and how they differ. Learn all about biomes from this overview.

An Overview of Valley Formation and Development
Learn all about the development of valleys through this great overview article on valley formation from the expert About.com Geography site.

Sand Dunes
Learn about the formation and creation of sand dunes around the world, from the About.com Geography GuideSite.

Solar Eclipse
Learn about all types of solar eclipse - from total solar eclipse to partial solar eclipse. A solar eclipse is caused by the moon blocking the sun as viewed from the earth.

Physical Geography Overview - All About Physical Geography
An overview of the subject of physical geography and its various aspects from your About.com Guide to Geography.

Atacama Desert
The Atacama Desert of northern Chile is the world's second driest region (icy Antarctica is first). Although the Tropic of Capricorn passes through the region, the Atacama lies in the rain shadow of Chile's Coast Range, which squeezes out the moisture from the atmosphere.

Atmosphere Composition
A listing of the composition of the atmosphere of the earth, from your About.com Guide to Geography.

Atmosphere, Biosphere, Hydrosphere, Lithosphere
Learn about the four spheres of the earth - the lithosphere, hydrosphere, biosphere, and atmosphere.

Basin and Range - An Overview of Basin and Range Topography
The prominent topography of the Basin and Range Province in the Western United States is due to a very specific geologic feature, which is only found in a few other basins and ranges around the world.

Biogeography - An Overview of Biogeography
An overview of biogeography, the geographic distribution of plants and animals over the surface of the earth. This article is part of the expert Geography site at About.com

December Solstice (Summer in the Southern Hemishpere)
An overview of the December solstice.

Coriolis Effect - An Overview of the Coriolis Effect
Learn about the Coriolis effect, which appears to deflect items moving on or above the earth's surface based on the rotation of the earth.

Geodesy and the Size and Shape of the Planet Earth
Learn all about the size of the earth, the shape of the earth, and how its size and shape are measured in the science known as geodesy, from the About.com expert Geography GuideSite.

Erosion - Information on Erosion
Learn about water, wind, ice, and waves - the agents of erosion that wear away at the surface of the earth, from your About.com Guide to Geography.

Learn about the deserts of the world and other arid lands, from your About.com Guide to Geography.

Glacier Deposition and Moraines
The rock and soil picked up and transported by glaciers creates new landscapes as it is eventually deposited by melting and retreating glaciers. Learn about deposition and moraines of glaciers.

Karst and Sinkholes
Dangerous sinkholes and beautiful caverns are two results of landscapes known as karst topography. Learn about these features from your About.com Guide to Geography.

Geomorphology - An Overview of Geomorphology
A great overview of geomorphology, which is the science of landforms with an emphasis on their origin, evolution, form, and distribution across the physical landscape. This overview of geomorphology is part of the About.com Geography site.

Landscape Ecology - An Overview of Landscape Ecology
An overview of the field of study known as landscape ecology, discipline that explores the spatial aspects of ecology and the biosphere.

Lapse Rate - Overview of Lapse Rate
An overview of the atmospheric phenomenon known as lapse rate. Lapse rate explains the decrease or increase in temperature of a parcel of air that rises or lowers.

Magnetic Reversal
Discover all about the magnetic reversal of the earth's poles throughout the planet's history. The poles have reversed 170 times in the past 100 million years. Find out when it will happen next!

Mars Geography
In the tradition of ancient geography, this feature describes a far-away and unfamiliar place, the planet Mars.

Ring of Fire
Find out more about the arc of volcanoes which circles the Pacific Ocean.

Soil Size Classification
From clay to gravel, each soil partical fits into its own category.

An overview of the soil of the lithosphere, from your About.com Guide to Geography.

Solar Radiation and the Earth’s Albedo
An overview of the energy and heat, known as radiation, that is received on earth from the sun. Learn about solar radiation and albedo, the reflection of the sun's energy from the About.com geography site.

Terminator Line
Learn about the terminator line on the earth that separates light from darkness.

The Earth's Elliptical Orbit Around the Sun - Aphelion and Perihelion
An overview of the earth's orbit around the sun, including the times when it is closest to the sun and farthest from the sun, known as perihelion and aphelion, respectively.

The Equator, Hemispheres, Tropic of Cancer, and Tropic of Capricorn
The facts about the key lines of latitude that relate to the position of the sun and the angle of the earth.

The Four Seasons - An Overview of the Four Seasons
Learn about the start dates for each of the four seasons in the Northern and Southern Hemispheres. Find out about the earth-sun interaction on the June Solstice, December Solstice, March Equinox, and September Equinox, from your About.com Guide to Geography.

Topographic Prominence - Overview of Topographic Prominence
An overview of topographic prominence, the concept of looking at the local relief of a location based on the local terrain.

The Longest Day of the Year
The summer solstice is the longest day in the year but it's not the day of earliest sunrise or sunset - learn more about this intriguing occurrence, from your About.com Guide to Geography.

The Physical Environment
This online physical geography textbook is an amazing resource. Its images and graphics really help to provide detailed information about the basics of physical geography.

The Rock Cycle
Discover how igneous, metamorphic, and sedimentary rocks are created and how they can be recycled as part of the rock cycle of the earth's crust.

James Hutton, known as the father of geology, suggested that the earth was much older and that processes occurring in the present were the same processes that had operated in the past, and would be the processes that operate in the future. This concept became known as uniformitarianism and can be summarized by the phrase 'the present is the key to the past.'

Summer Solstice
June 21 is the summer solstice in the Northern Hemisphere and marks the beginning of summer for the earth north of the equator.

Learn about the benefit of trees in a community, from the About.com Geography GuideSite.

Geography of Dogs
According to most experts, all modern dog breeds are posited to have originated from Southeast Asia. There, thousands of years ago, humans interacted with local grey wolf populations and eventually domesticated them.

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