SciShow
How Do We Know How Old the Earth Is?
In the wake of World War 2, Clair Patterson embarked on a scientific quest to find out how old the Earth really is. His hard work paid off, but it also revealed a modern danger.
PBS
The History of Climate Cycles (and the Woolly Rhino) Explained
Throughout the Pleistocene Epoch, the range of the woolly rhino grew and shrank in sync with global climate. So what caused the climate -- and the range of the woolly rhino -- to cycle back and forth between such extremes?
PBS
When a Billion Years Disappeared
In some places, the rocks below the Great Unconformity are about 1.2 billion years older than those above it. This missing chapter in Earth’s history might be linked to a fracturing supercontinent, out-of-control glaciers, and maybe the...
SciShow
5 Ways Humans Have Changed The Earth
We are approaching a whole new era! . . .or at least a new epoch. Michael Aranda explains how humans are leaving their mark on the Geologic Time Scale.
Curated Video
Fossil Evidence
Studying fossil evidence reveals how organisms have changed over time. What are fossils and how are they formed? Biology - Adaptation And Evolution - Learning Points. Fossil hunters are called paleontologists. Paleontologists study...
Visual Learning Systems
Changes on Earth
In this video students identify evidence from patterns in rock formations and fossils to explain changes in the landscape over time. Live-action video footage of different lanscapes illustrate landscape changes. Students provide their...
Curated Video
Layers of History
A video entitled "Layers of History" which discusses how Earth's geographic features were formed, with a focus on the study of rock layers through absolute and relative dating.
Visual Learning Systems
Forces Shaping the Earth: Folding
Gravity and erosion are major factors in changing the shape of the surface of Earth. The different types of erosion, and the major types of mass movements caused by gravity are discussed in this video. Other terminology includes:...
Visual Learning Systems
Sedimentary Rocks: Rock Layers
This program outlines the classification system of sedimentary rocks. Specific attention is paid to the different ways sedimentary rock forms. The relationship between sedimentary rocks and the formation of fossils is investigated. Other...
Visual Learning Systems
Sedimentary Rocks: Sedimentary Formations
This program outlines the classification system of sedimentary rocks. Specific attention is paid to the different ways sedimentary rock forms. The relationship between sedimentary rocks and the formation of fossils is investigated. Other...
Visual Learning Systems
Forces Shaping the Earth: Faulting
Gravity and erosion are major factors in changing the shape of the surface of Earth. The different types of erosion, and the major types of mass movements caused by gravity are discussed in this video. Other terminology includes:...
Visual Learning Systems
Rocks and the Rock Cycle: Sedimentary Rocks
The rock cycle is illustrated in detail using easy-to-understand animations. Examples of the various types of rocks are introduced and the characteristics of different rocks are compared. Other terminology includes: rock cycle, igneous,...
Visual Learning Systems
Understanding Geologic Time
This video explains the concept of geologic time and how geologists determine the age of Earth and its rock layers. It introduces the idea of relative time and absolute time, and highlights the law of superposition. A Journey Through...
Getty Images
Lake Powell Shoreline 1
Layers and crossbedding are clearly visible in the sandstone shore of Lake Powell, Utah.
Bozeman Science
Law of Superposition
Scholars learn how rock layers, shift, and move over time. The instructor shows viewers how to solve geologic problems to determine the order of rock layers from oldest to youngest through a drawing video and then actual...
MinuteEarth
The Deadliest Ice Age Ever
Will all species follow the trilobite down the road to extinction? Discover the changing conditions on ancient Earth that led to both population explosions and mass extinctions with a video presentation. The narrator shows examples...
SciShow
Great Minds: James Hutton, Founder of Geology
Don't get sedimental when you learn the history of geology. The video focuses on James Hutton who, in the 1700s, came up with a theory based on rock layers. Without using any modern dating tools, he was able to theorize the earth was...
Be Smart
How Does A Canyon Become Grand?
Ah, the Grand Canyon ... ain't it grand? The narrator of a video from PBS Digital Studios explains, in detail, how the Grand Canyon was formed over millions of years.
Be Smart
100,000,000 Years From Now
Holocene, Pleistocene, Pliocene, Miocene, Oligocene, Eocene, Paleocene ... wait, did I miss one? PBS Digital Studios explains how human impact on Earth has potentially brought about a new epoch in geologic history, the Anthropocene....
Bozeman Science
Bozeman Science: Law of Superposition
Mr. Andersen explains the law of superposition and the principle of original horizontality. He uses an animation to explain how rock layers can accumulate over time. [6:21]
Incorporated Research Institutions for Seismology
Iris: Stratigraphy: Geologic History of a Region in Cross Section
Rocks may be created in layers, but those layers do not always stay in the form or location where they were created. Find out about the forces that can change rock layers that help tell the story of the Earth in that location.