Summary
Summary Tectonic processes and hazards
- Course
- Institution
A detailed summery of tectonics including, key terms, factual information+ case study information for a level geography,
[Show more]
Seller
Follow
vaughnruffles-francis
Content preview
Tectonic platesThe earth's surface is made up of two types of crust:
- Oceanic crust - found underneath the oceans. It is denser than continental
crust and can be subducted.
- Continental crust - found under land masses or continents. It is generally older
than oceanic crust and is less often destroyed.
Earthquakes are found along all types of plate margins, Volcanoes however, only
occur at constructive and destructive plate margins.
————————————————————————————————
3 types of plate boundaries
- destructive
As the plates collide, the oceanic plate is forced beneath the continental plate. This is known
as subduction. This happens because the oceanic plate is denser (heavier) than the
continental plate.
- constructive
At a constructive plate margin the plates move apart from one another. When this happens
the magma from the mantle rises up to make (or construct) new land in the form of a shield
volcano. The movement of the plates over the mantle can cause earthquakes.
- Transform (Conservative)
At a conservative plate margin, the plates move past each other or are side by side moving
at different speeds. As the plates move, friction occurs and plates become stuck. Pressure
builds up because the plates are still trying to move. When the pressure is released, it sends
out huge amounts of energy, causing an earthquake. The earthquakes at a conservative
plate boundary can be very destructive as they occur close to the Earth's surface. There are
no volcanoes at a conservative plate margin.
—————————————————————————————————
Types of waves
Primary - arrives first,fast moves through solid rock and fluids, pushes and pulls in the
direction of travel
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller vaughnruffles-francis. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $6.74. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77764 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now