Physical Geography
Daylight Saving Time
Deserts
Disaster!
El Niño: Is it a Big Deal?
The Equator, Hemispheres, Tropic of Cancer, and Tropic of Capricorn
Erosion
The Four Spheres
Fujita Scale
Glacial Deposition & Moraines
Hurricane
The Hydrologic Cycle
The Ice Ages: Are They Over?
Intertidal Zone
ITCZ
Koppen Climate Map
Magnetic Reversal
Mars-ography: The Geography of the Red Planet
Measuring Precipitation
Milankovitch Cycles: Changes in Earth-Sun Interaction
Modified Mercalli Scale
Monsoons
Mount Pinatubo Eruption
Names For Water Bodies
Ocean Currents
Orographic Lifting, Precipitation, and Rain Shadows
Oxbow Lakes
Preparing for Floods
Ring of Fire
Rivers: From Source To Sea
The Rock Cycle
Sinkholes and Karst Topography
Six or Seven Continents?
Soil
Soil Size Classification
Solstices and Seasons
Sunrise, Sunset - The Longest Day
Tides of the Earth's Oceans
Time Zones
Tornadoes
Trade Winds, Horse Latitudes, and the Doldrums
Uniformitarianism
Urban Heat Islands
Winter (or Summer) Solstice
Avalanches
Learn about these deadly hazards of the mountains.
Everything you ever wanted to know about "spring forward, fall back."
A large portion of the planet is covered by arid lands.
When disaster strikes, the Internet is a great place to find out what's going on.
The media sounds the alarm to prepare for catastrophic rain and floods this winter but is this realistic?
The facts about the key parallels that relate to the position of the sun.
Learn all about the four key agents of erosion and their erosive powers.
The biosphere, lithosphere, atmosphere, and hydrosphere are quite amazing.
Ted Fujita developed a scale to measure tornado damage that helps us to classify nature's most violent storms.
Glaciers and ice sheets create new landforms as they melt.
An overview of the terrible storms known as hurricanes. Find out how they are born and die.
The sun makes the water go around - from the ocean to the air to the land.
Your guide speculates on whether another ice age is approaching. Will global warming cause the ocean levels to drop?
Land, ocean, and air meet at the intertidal zone, where the coast is rich with life.
Discover the fascinating Intertropical Convergence Zone or ITCZ, a zone of trade wind convergence and excessive precipitation.
The most widely used climate classification system is easy to understand.
Throughout earth history, the magnetic field has flipped many times.
In the ancient tradition of geography, your guide describes a far-away place.
Learn how this important piece of climatic data is measured.
Find out about cyclic climate changes and the Y14K problem.
The scale used to measure the intensity of earthquakes.
Learn about the annual cycle of rain and dry winds that effect a large proportion of the world's population.
A decade ago, the eruption of Mount Pinatubo in the Philippines killed hundreds of people and damaged thousands of homes. The volcano also had an profound effect on the earth's climate for several years following the eruption.
Find out the difference between a bay, a gulf, and an inlet or a stream, a creek, and a brook.
A listing of the seventeen major surface ocean currents.
How mountains squeeze the moisture from the air.
Discover the fascinating truth behind oxbow lakes, billabongs, and bayous.
Floods are the most common natural disaster. Learn more about floods and how to prepare.
Find out more about the arc of volcanoes which circles the Pacific Ocean.
All about rivers and how they interact with the land around them. Learn about deltas, tributaries, valleys, and more.
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.
Dangerous sinkholes and beautiful caverns are two results of landscapes known as karst topography.
Are Europe and Asia separate continents or are they one, Eurasia?
An introduction to this most vital of earth components.
From clay to gravel, each soil partical fits into its own category.
An overview of the June solstice.
The summer solstice is the longest day of daylight in the year but it's not the day of the earliest sunrise or sunset - learn more about this intriguing occurence.
An overview of the effects of lunar and solar gravity upon the earth's oceans and even its crust.
Learn about the development of time zones around the world.
Tornadoes are the most destructive of any local atmospheric phenomena.
The names for the regions of the earth known as the trade winds, horse latitudes, and the doldrums all hark back to the age of sailing.
Learn about this basic concept of earth science.
Cities are much warmer than their surrounding countryside due to the phenomena known as Urban Heat Islands. Discover how to combat the heat of the city.
An overview of the December solstice.
