Why are mountains like the Canadian Rockies and
- Slides: 13
Why are mountains like the Canadian Rockies and the Himalayas so tall and jagged? In your book: Write down anything you know about the formation of mountain ranges like the ones pictured to the side.
Tectonic Plates and Mountain Formation
Learning Intentions • To explore the concepts of continental drift and the formation of mountains. • To discover the link between the two concepts. • To understand how these two concepts have and will affect the world we live in.
Super Continents – Let’s Start 300 Million Years Ago! • Pangea was a supercontinent that lasted about 100 million years • The theory is there were other super continents before pangea
Two Super-Continents Let’s Identify: • North America • South America • Africa • India • Asia
Continental Drift – Pangea didn’t last forever…
How Does Continental Drift Occur? • Earth’s crust (lithosphere) is separated into many “tectonic plates” along weaknesses in the crust. • Plates move around because magma moves below the Earth’s crust moving the crust above it. • The theory is movement direction of the plates changes over time.
Contact Between Tectonic Plates Divergent Boundary – Where the plates are spreading apart. Convergent Boundary – Where two plates collide. Transform Boundary – Where plates slide in opposite directions past each other.
Tectonic Plates of the World
Continental Drift - Himalayas
When Plates Collide… Why are these mountains so jagged?
When Plates Stop Colliding… Why would these mountains be rounded off?
How the Himalayas Were Formed Further reading at: http: //www. todayifoundout. com/index. php/2013/12/himalayasformed/ Videos about plate tectonics: https: //www. youtube. com/watch? v=0 m. WQs 1_L 3 f. A
