Geog Tectonics 1.1-1.3

Question 1

1.1

What is tectonic plate theory

Answer 1

• earth has 3layered structures
• earths lithosphere is broken up into huge pieces called tectonic plates
• tectonic plates are constantly moving
• plate movements result in formation of landforms (eg mountain ranges) and phenomena eg earthquakes

Question 2

What are the thickness, temp and positions of the 3 different layers

Answer 2

• core, innermost, highest 4400-6000degc, thickest 33000 Km
• mantle, in between, 1000-3700degc, 2900km
• crust, outermost, lowest temp, thinnest, 6-70km

Question 3

What is lithosphere

Answer 3

It is the uppermost part of the mantle and the crust which are solid parts of the earth
Lithosphere is dived into 2 parts, continental plates and oceanic plates