HideShow resource information
What is a volcano?
An opening or vent in the earths surface where molten material erupts and solidifies as lava.
1 of 43
At what plate boundaries do volcanoes occur?
Destructive and constructive
2 of 43
Pyroclastic Flow
Hot steam, ash, rock ,and dust that rolls down the side of a volcano very quickly and reaches 400c
3 of 43
The decline at the top of the vent where an eruption has blown the top of the volcano off
4 of 43
Main Vent
The pipe running up the centre of the volcano that allows magma to escape
5 of 43
Magma Chamber
A pool of magma below the volcano
6 of 43
Molten Rock below the earths surface
7 of 43
Molten rock above the earths surface
8 of 43
Volcanic cloud, ash and bombs
Airborne material ejected from the volcano
9 of 43
Parsitic Cone
Secondary Cone Living off the magma in the main vent
10 of 43
Destructive mud flow
11 of 43
Convection current
Heated liquid magma rises to the earth's crust, then cooled ino gloopy heavy magma and drops back down to the bottom of the mantle
12 of 43
Destructive Plate Boundary
Plates are moving together. Oceanic plate pushed under continental plate.
13 of 43
Collision Plate Boundary
Two continental plates are moving together. Causing fold mountains
14 of 43
Conservative Plate boundary
Two plates sliding past each other. Uneven edges slip and cause earthquakes
15 of 43
Constructive Plate boundary
Plates are moving apart. Magma rises and cools to form new rock.
16 of 43
Effects of an earth quake in an MEDC
Good medical technology, good emergency services, stable buildings, good transport links (air ambulance), electricity
17 of 43
How are buildings stable in an MEDC?
Hollow concrete blocks, re inforced steel corner pillars, stone foundations made of the rublle of collapsed buildings
18 of 43
Effects of an earthquake in an LEDC
LAck of medical tech, poor emergency services, unstabe buildings (steel girders, mud walls) bad transport links, no or little power.
19 of 43
A natural drain, most of the rain that falls on the land eventually drains into this
20 of 43
The place where a river begins
21 of 43
A small river or stream meets a larger river
22 of 43
Where two rivers meet
23 of 43
Drainage basin
The area drained by a river and its tributaries
24 of 43
A space or gap which the river flows through
25 of 43
An area of high land forming the edge of a drainage basin
26 of 43
Wearing away of rock and soil found along the river bed and banks / breaking down of particles being carried downstream by th river
27 of 43
Rocks being carried by the river smash together and break into smaller particles
28 of 43
Soluble particles are dissolved into water
29 of 43
The bed and bank are worn away by rocks being carried by the river
30 of 43
Hydraulic action
The force of the river against the banks causes air to enter cracks or crevices, the pressure wears the banks away
31 of 43
When rocks are broken down in the place where they were formed by the action of weather, plants and animals
32 of 43
Physical weathering and examples
when force is used to break up the rock (freeze thaw, exfoliation [heat then cold causes outer layer to crack] biological [plants and roots]
33 of 43
Chemical and examples
'When a chemical change takes place in the rock (Rust and acid rain)
34 of 43
Rivers pick up and carry material as they flow downstream
35 of 43
Large boulders and rocks are rolled along the bed
36 of 43
Small Pebbles and stones are bounced along the river bed
37 of 43
solution (transportation)
minerals are dissolved in the water and carried along
38 of 43
Fine light material is carried along the water
39 of 43
When a river loses energy, it will drop some material its carryng
40 of 43
When does depostiion happen
in shallow water, after a flood or in drought, end of a rivers journey
41 of 43
How is a meander formed?
Flow is fastest on outside of river where deeper, river erodes outside bank and under cuts to form a river cliff, on inside o bend river is slow flowing and shallow, causes deposition and slip off slope.
42 of 43
Hyrdocodial Flow
Corkscrew motion
43 of 43

Other cards in this set

Card 2


At what plate boundaries do volcanoes occur?


Destructive and constructive

Card 3


Pyroclastic Flow


Preview of the front of card 3

Card 4




Preview of the front of card 4

Card 5


Main Vent


Preview of the front of card 5
View more cards


No comments have yet been made

Similar Geography resources:

See all Geography resources »See all plate tectonics resources »