Physical Geography

Physical geography focuses on geography as an Earth science (and is sometimes called Earth System Science).

Physical geography is a branch of geography that focuses on the study of the natural features and processes of the Earth’s surface. It includes the examination of landforms, climate, vegetation, soils, and water resources. Physical geographers use a range of scientific methods and tools to analyze and understand the complex interactions between the Earth’s physical systems.

Learn about the different branches of geography that fall under the physical geography category: climatology, geomorphology, biogeography, and more.

A small brown bird with light brown chest and white stripes above the eyebrow standing in a white platform.

Bewick’s Wren

Caitlin Dempsey

The Bewick's Wren (Thryomanes bewickii) is a small songbird native to North America.

Strong winds blew across North and West Africa, picking up massive amounts of dust from the Sahara Desert and transporting it across the Atlantic Ocean as seen in this series of satellite imagery from NASA. captured March 26, March 27, March 28, and March 29, 2018. Image: NASA.

Geography of Saharan Dust: Where and How Does it Travel?

Julian Marks

The Saharan Desert produces vast amounts of atmospheric dust, which is carried and deposited thousands of kilometers away by strong winds traveling over great distances.

California poppy (Eschscholzia californica). Photo: Caitlin Dempsey.

Endemic, Native, Non-native, and Invasive Species

Caitlin Dempsey

Learn what the terms endemic, native, non-native, or invasive mean for animals and plants.

Low lying clouds over a forest.

Study: Afforestation Can Lead to More Cloud Cover

Caitlin Dempsey

Increased forest cover can lead to more low lying clouds which helps to cool the Earth.

A view of the Arctic Ocean and sky. Sea ice is floating on top of the ocean.

Arctic Circle

Caitlin Dempsey

The Arctic Circle is a circle of latitude encompassing the northernmost pole of the Earth and is located at approximately 66°33′45.6″ north of the Equator.

Cloud streets over the Great Lakes, February 110, 2016. NASA image by Jeff Schmaltz, LANCE/EOSDIS Rapid Response.

Cloud Streets

Caitlin Dempsey

Cloud streets are cumulus clouds that form in long bands along cylinders of rotating air and are roughly parallel to the ground.

The First Newly Formed Island to Survive in the Satellite Era

Caitlin Dempsey

The first newly formed island to survive in the age of remote sensing is Hunga Tonga-Hunga Ha'apai.

Bald eagle flies away from the surface of the water with spray flying behind it. It grasps a fish in its talons.

Greatest Concentration of Breeding Bald Eagles in the Continental U.S.

Caitlin Dempsey

The San Juan Islands in Washington has the highest concentration of breeding bald eagles in the continental United States.

An angled view looking up the arms of a Saguaro cactus.

The Largest Cactus in the United States

Caitlin Dempsey

The Saguaro Cactus is the largest cactus in the United States

Satellite image of glaciers and bogs in northern Sweden.

Oldest National Park in Europe

Caitlin Dempsey

Established in 1909, Sarek in Sweden is Europe's oldest national park.

The beaver faces the camera. Its tail extends to the right and is cocked on its side, making the paddle-shape more visible.

Building It Back – Beaver Reintroductions Across the World

Katarina Samurović

Since the 1920s, beavers have been artificially re-introduced to many habitats across their former range.

A geyser eruption with visitors standing on the boardwalk watching.

Geography Facts About Yellowstone National Park

Caitlin Dempsey

Learn some quick and fun geography facts about Yellowstone National Park.

Satellite image of actinoform clouds off the western coast of Australia. Image: NASA, Aqua satellite, January 29, 2020.

What are Actinoform Clouds?

Elizabeth Borneman

Actinoform clouds are typically found along large Western landmasses over the ocean and were first seen on satellite imagery in the 1960s.

View of St. Mary Valley looking east from Logan Pass with Going-to-the-Sun road visible to the left.

Geography of Montana

Marques Hayes

The fourth largest state, Montana has a diverse geography that stretches from grass prairies to mountainous terrain.

Photo of the Caldor Fire on the evening of September 9, 2021

Pyrocene: the Age of Fire?

Katarina Samurović

Climate change and human activities are creating record wildfire seasons.

Rhyolite banding, Pinnacles National Park, 2014.

Geography of Igneous Rocks in the United States

Caitlin Dempsey

About 15% of the Earth's present land surface is made up of igneous rocks.

Natural-color image of Imja Tsho and surrounding glaciers. Source: Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite, October 4, 2010.

Melting Glaciers and Larger Lakes

Caitlin Dempsey

A global survey that used satellite data has determined that overall, glacial lakes have increased in volume almost 50% since 1990.

California ground squirrel sitting on the trunk of a fallen oak tree.

Camouflage: Ways Animals Blend in With Geography

Caitlin Dempsey

Camouflage is a way for animals and insects to blend in with their surroundings in order to avoid detection.

Stray cats at the São Jorge Castle in Lisbon, Portugal.

Mapping Feral and Stray Cats

Mark Altaweel

Conservationists are using GIS and GPS to map out feral cat movements to understand impacts on native species.

Image showing the change in the jet stream over the western U.S. during El Niño.

How El Niño and La Niña Affect Rain in the United States

Julian Marks

El Niño and La Niña are weather patterns that frequently have a considerable impact on the western and southwestern United States.

The eruption within Halema'uma'u, at Kīlauea summit within Hawai'i Volcanoes National Park. Photo: USGS web cam, public domain.

Geography Facts about Kīlauea

Caitlin Dempsey

Kīlauea is the youngest and most southeastern volcano on Hawaii island.

Great Springs and the Roe River in Montana.

The Shortest River in the United States

Caitlin Dempsey

The shortest river in the U.S. is Montana's Roe River, which stretches only 201 feet.

Ripples in the sand are created by the wind. Mesquite Flat Sand Dunes, Death Valley.

Sand Dunes in the United States

Julian Marks

Discover the diverse sand dunes across the U.S., from towering Great Sand Dunes in Colorado to coastal dunes along the Atlantic and Pacific shores.

Ground disturbance in southern California after the January 17, 1994 Northridge earthquake.

Geography Facts About Earthquakes

Caitlin Dempsey

Learn about where earthquakes occur on Earth.

Pahoehoe from Kilauea eruption, 1989.

Pacific Ring of Fire

Julian Marks

The Ring of Fire refers to the long chain of volcanoes and earthquake zones that encircle much of the Pacific Ocean.

Cover of Michael Hannah's book "Extinctions:  Living and Dying in the Margin of Error".

Review | Extinctions: Living and Dying in the Margin of Error

G.T. Dempsey

This book sets out, in some nine chapters, both the ‘turbulent’ journey of that one species living 3.7 billion years ago to the 8.7 million today and the human activity threatening that biodiversity.