MYTUTOR SUBJECT ANSWERS

3590 views

Describe the formation of hotspots and explain their relationship to plate movement.

Radioactive deacay in the Earth's core creates extremely high temperatures which heat the lower mantle. When radioactive decay is concentrated, local thermal currents are generated in the lower mantle. Plumes of magma rise from the lower mantle and burn through the Earth's lithosphere to create volanic activity on the Earth's surface. An example of a hotspot Hawaii.The hotspot remains stationary whilst the overlying plate moves. Using the example of Hawaii, the Pacific Plate is moving North-West at a rate of 5-10cm per year. This leaves a chain of extinct volcanoes which are no longer fed by the source of magma. The extinct volcanoes put pressure on the plate and therefore subside and become seamounts. Bends in the island chain show changes in the direction of plate movement. Hotspots are proof of Wagners theory of plate tectonics and plate movement.

Bethan D. A Level Geography tutor, GCSE Geography tutor, GCSE History...

2 years ago

Answered by Bethan, an A Level Geography tutor with MyTutor

Still stuck? Get one-to-one help from a personally interviewed subject specialist

37 SUBJECT SPECIALISTS

£20 /hr

Olivia C.

Degree: BA Geography (Bachelors) - Exeter University

Subjects offered: Geography, Religious Studies

Geography
Religious Studies

“I'm a second year student studying BA Geography at the University of Exeter. I have always enjoyed learning and believe that every student has the potential to reach the highest possible grades with the correct help and guidance along ...”

MyTutor guarantee

£20 /hr

Theone J.

Degree: BA Geography (Bachelors) - Southampton University

Subjects offered: Geography, Psychology+ 1 more

Geography
Psychology
Economics

“About me-  I am an undergraduate student at the university of Southampton currently studying BA Geography. It has been one of favourite subjects since high school not just because we get to colour in maps all day. My passion for the s...”

MyTutor guarantee

£20 /hr

Carys R.

Degree: Combined Honours in Social Sciences (Bachelors) - Durham University

Subjects offered: Geography, Psychology+ 3 more

Geography
Psychology
Biology
-Personal Statements-
-Oxbridge Preparation-

“Hello, I'm Carys! About me! I am in my 2nd year of studying Geography and Anthropology at Durham University.I really enjoy my degree and have always been interested in the contemporary challenges facing societies, so I hope that I ca...”

About the author

Bethan D.

Currently unavailable: no new students

Degree: Geography BSc (Bachelors) - Durham University

Subjects offered: Geography, Science+ 2 more

Geography
Science
History
Biology

“Second year Geography student at Durham University. Passionate about Geography and Economics at GCSE and A-Level.”

MyTutor guarantee

You may also like...

Posts by Bethan

Describe how seismic waves and earthquakes can be measured.

Describe the formation of hotspots and explain their relationship to plate movement.

Outline the features of seismic waves.

Other A Level Geography questions

Explain the formation of a meander.

What factors affect the demand for a resource?

Describe and comment on the social, economic and political implications of population change?

What is the impact of tropical air masses on the UK?

View A Level Geography tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok