SciShow
6 Mysteries Geologists Can't Solve
There are some geological areas on the planet that scientists still don't understand. For most things it's pretty clear—combine a volcanic eruption a dash of erosion, and boom, you’ve got a striking cliff! But not all the features on...
Crash Course
What Are Rocks and How Do They Form? Crash Course Geography
From towering mountains to pebbles along a river, the Earth is made of a huge variety of rocks. In today's episode, we're going to follow the rock cycle of a piece of granite in the Himalayan mountains, and as you'll see, every rock has...
SciShow
Breaking News: Mars Suitable for Life
Earlier today, mission specialists with NASA's Mars Science Laboratory announced that they have found, for the first time, evidence of an ancient environment on Mars that could have sustained life. Hank tells us the specifics in this...
SciShow
Big Martian Lake!
Hank shares the latest exciting findings from the Mars Science Laboratory, known to its friends as Curiosity. Learn what Curiosity has discovered about the giant Gale Crater, and what those developments mean for the prospects of ancient...
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.
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.
SciShow Kids
Be a Rock Detective!
Did you know that of all of the rocks in the world, there are only 3 main kinds? What are they? And how can you tell them apart? Jessi and Squeaks show you how you can become a rock detective!
Curated Video
Sedimentary rock
Rock formed by the build-up of layers of sediment over time. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Limestone
A sedimentary rock composed mostly of calcium carbonate; relatively soft, and light brown in colour. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
Curated Video
Limestone: Features
Easily eroded by water, limestone's composition means it makes up spectacular sights all over the world. Learn about some of the surface and underground features of this rock type. Earth Science - Geology - Learning Points. Limestone is...
Curated Video
Fold Mountains: Formation
Where are fold mountain ranges found on our planet? And how do the movements of tectonic plates affect their growth? Earth Science - Geology - Learning Points. A Fold mountain forms over millions of years by a process called orogeny....
Curated Video
Limestone: Uses
From English farmland to Egyptian tombs, Limestone is a distinctive rock with many uses. Learn about the formation of different limestone types and the landscapes these form. Earth Science - Geology - Learning Points. There are three...
Curated Video
Sediment
Naturally occurring debris, often the product of weathering of rocks, carried by wind or water and deposited in a new location. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
Curated Video
Rocks – Clip
Find out how the fossils found in 124-million-year-old sedimentary rocks are revealing new information about evolution. Material processes - Classifying materials - Rocks A Twig Tidbit Film - Clip. A short film that extends the learning...
Curated Video
Rock Types - Rock Classification
Find out how different types of rocks can be classified depending on how they were formed. Material processes - Classifying materials - Rocks Learning Points Sedimentary rock is formed from compressed sediment at the bottom of seas,...
Curated Video
Fossils - Preserved Life Remnants
See the fossilised footprints of the first bird and discover how remains of organisms have been preserved for 150 million years. Material processes - Classifying materials - Rocks Learning Points Fossils form when the remains or marks...
Curated Video
Drawing the Rock Cycle
Dr. Forrester explains the transformation of rocks during the rock cycle.
Curated Video
GCSE Chemistry - Evolution of the Atmosphere #67
In this video, we'll look at: - What the early atmosphere was like on earth - How that atmosphere changed to be suitable for life - The processes responsible for features of the earth we see today
Curated Video
United States Landforms
Dr. Forrester talks about the different types of landforms that can be found in the United States. She also describes several landforms in detail about how they are created.
Professor Dave Explains
Methods of Dating the Earth Part 1: Relative Dating
We've learned about all the enormous time spans that describe the billions of years in Earth's history, but how did we arrive at these dates? How can we know the age of the Earth? Let's learn about some dating methods, starting with...
Curated Video
High Five Facts - Sedimentary Rocks
This video explores five fun facts about Sedimentary Rocks.
Curated Video
High Five Facts - Metamorphic Rocks
This video explores five fun facts about Metamorphic Rocks.
Curated Video
3 Types of Rocks and The Rock Cycle
Learn the 3 Types of Rocks and The Rock Cycle with this educational video by KLT!