Canyons
⭐ MasteredA canyon is a deep valley with steep sides, usually carved by a river over millions of years. The Grand Canyon in the USA is over 1.6 km deep.
The Colorado River carved the Grand Canyon.
All about Canyons
A canyon is a deep valley with steep sides, usually carved by a river over a very long time. Canyons show layers of rock that record Earth's history, because the river cuts down through the layers like the pages of a book.
The Grand Canyon in Arizona, USA, is more than 1.6 kilometres deep in places and about 446 kilometres long. Canyons can also be formed by wind, rain and ice.
🎮 Try it yourself!
Loading…
Real-life uses of Canyons
- Revealing layers of rock that tell the story of Earth's past
- Attracting hikers, rafters and photographers
- Providing habitats for desert animals and plants
Frequently asked questions about Canyons
What is the difference between a canyon and a gorge?
A canyon is usually wider and longer than a gorge, which is a narrow, steep-sided valley.
How long does it take a river to carve a canyon?
It can take millions of years, depending on the rock and how much water flows.
Why are canyons colourful?
Different minerals and iron oxides in the layers of rock give them red, orange and brown colours.