Dec 28, 2015
Inside our EarthLithosphere
~ The solid, ground part of our Earth;
measures roughly 62 miles thick and includes the
crust and the ocean floor.
Inside our EarthAsthenosphere
~ The layer just below the lithosphere and found in the upper mantle; made up of rock that is hot, soft, and
slightly fluid.
Inside our EarthConvection Current
~ the path along which energy is transferred through a liquid; heat rises, cools, heats up and rises again…thought to be the driving
force of continental drift in the asthenosphere.
A feature that rises above the surrounding landscape. In most cases, mountains are created
from plate movement.
Folded Mountains
These mountains form when two tectonic plates collide
(Swiss Alps, Himalayas, Urals)
Fault-Block Mountains
These mountains form when masses of rock move up or down along a fault
(Wasatch Range in Utah)
Dome Mountains
The surface is lifted up by magma, forming a bulge; the rock layers have worn away
exposing the other layers of rock.
(Pike’s Peak in Colorado, Big Horn)
Volcano
Form when magma erupts from an opening in Earth’s surface.
(Mt. St. Helens - USA, Mt. Fuji - Japan)
PompeiiAugust 24, 79 AD, the sleeping town of
Pompeii, Italy was destroyed by a volcano…Mt. Vesuvius.
Pompeii
~ The city would remain buried for over 1700 years under several feet of ash, lava, and
rock that fell on the city.
~ The people who lived here never knew what hit them – the rock and ash
preserved their bodies in the position they last were in and it would not be until 1860 that the archaeologist, Giuseppe Fiorelli,
would be able to see their story…