Tectonics

HideShow resource information
  • Created by: Rebecca
  • Created on: 11-06-14 12:00
What is Sima and where is it found?
Silica and magnesium, found in oceanic plates.
1 of 28
What is Sial and where is it found?
Silica and aluminium, found in continental plates.
2 of 28
Give 3 pieces of evidence supporting Wegener's theory of 'continental drift'.
Jigsaw fit of south America and Africa, glacial deposits in Brazil and West Africa, coal in Antarctic.
3 of 28
What are the two features of constructive plate margins?
Mid ocean ridges (ocean) and rift valleys (crust).
4 of 28
What are the upright blocks of land called in a rift valley?
Horsts.
5 of 28
How many types of destructive plate margins are there?
3
6 of 28
What type of margin caused the San Fransisco earthquake?
Conservative
7 of 28
What type of margin caused the Haiti earthquake?
Conservative
8 of 28
Name 3 things that affect the consequences of an earthquake.
magnitude, distance from epicentre, preparation.
9 of 28
What is 'contingency planning'?
Preparing for hazards in advance: prediction, prevention, protection.
10 of 28
How do you predict an earthquake?
Microquakes, curious animal behaviour, bulging of the ground.
11 of 28
How can buildings withstand earthquakes?
Rubber shock absorbers, reinforced lift shafts.
12 of 28
What 2 plates were involved in the Haiti earthquake?
North American and Caribbean.
13 of 28
Give 3 hazards of volcanoes.
Tsunamis, floods, pyroclastic flows.
14 of 28
Give 3 benefits of volcanoes.
Geothermal power, igneous rocks for building, tourism.
15 of 28
Give the forms of intrusive volcanic activity.
Dykes, Sills, Laccoliths, Batholiths.
16 of 28
Name the minor forms of extrusive volcanic activity.
Hot springs, Boiling Mud, Geysers, Solfatara.
17 of 28
Give the major forms of extrusive volcanic activity.
Types of lava, calderas, composite volcanoes.
18 of 28
What were the features of the Monsterrat eruption?
Started seeing signs 1 year before in 1995, Caldera, pyroclastic flows in the south.
19 of 28
What were the features of the Etna eruption?
Nest of composite volcanoes with calderas, effusive, fissures.
20 of 28
Describe P waves.
Fastest, core, mantle, crust, straight line.
21 of 28
Describe S waves.
Second fastest, mantle, crust, right angle.
22 of 28
Describe L waves.
Slowest, crust, rolling, most damage.
23 of 28
Describe the richter scale.
Measures magnitude, logarithmic.
24 of 28
Describe the mercalli scale.
Measures damage, 12-point scale in roman numerals.
25 of 28
At which plate margins are earthquakes most powerful?
Destructive.
26 of 28
Give 3 characteristics of the earth's core.
5,000° c, Iron and Nickel, generates convection currents.
27 of 28
How thick is the earth's crust?
5-40km.
28 of 28

Other cards in this set

Card 2

Front

What is Sial and where is it found?

Back

Silica and aluminium, found in continental plates.

Card 3

Front

Give 3 pieces of evidence supporting Wegener's theory of 'continental drift'.

Back

Preview of the front of card 3

Card 4

Front

What are the two features of constructive plate margins?

Back

Preview of the front of card 4

Card 5

Front

What are the upright blocks of land called in a rift valley?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Plate tectonics resources »