Tectonics Plate movement

Question 1

Types of faults

Answer 1

Reverse faults, convergent plate margin,

normal folds, divergent plate margin,

strike slip, fault to transform plate margin

Question 2

P-waves, speed arrival, direction of movement, medium and damage

Answer 2

8 km/s arrives first vibration

The longitudinal waves compressions in the direction that travels spread quickly from fault

travel through liquids and solids

cause surface to buckle and fracture.

Question 3

S waves speed arrival, direction of movement, medium, for which they can travel damage

Answer 3

4 km/s
arrive second
vibrates a right angle to direction of travel - (Transverse waves)

cannot travel through liquids only thro solids


Question 4

Love waves arrival, direction of movement, medium

Answer 4

Arrives third only travels for surface of the crossed fastest of surface waves

moves from side to side

only through the surface of the crust

Question 5

What is liquefaction?

Answer 5

Process by which water, saturated material temporarily loses normal strength, become less tightly packed so water molecules can rise to surface.

Occurs on lowland areas of unconsolidated, ground causes buildings to sink into soil.

Question 6

What is a landslide?

Answer 6

Earthquake waves losing rock on consul data, material and steep slopes and starts moving downwards under influence of gravity. Common in Steeple mountainous areas can block roads hit settlements. Make it hard to rescue people

USGS suggest that over the last 40 years around 70% of all deaths caused by earthquakes globally, excluding from shaking building collapse and tsunamis attributed to secondary impacts are landslides

2008, Sichuan, 2005 Kashmir


Question 7

How are seismic waves measured

Answer 7

Say summiteers can be used to measure, seismic waves, records, and locate size of seismic waves are in an earthquake

It makes a seismograph

Degree of movement shown as the amplitude of a wave between the mass, and the rest of instrument helps geologist and scientists , accurately measure the magnitude and size of seismic waves

Question 8

How is earthquake, magnitude measured

Answer 8

Mercalli Scale
3 Tremors or notes by many by often do not realise it is an earthquake

6 felt by all many people run outdoors. Furniture is moved

10 many structures, destroyed, ground badly cracked

12 total destruction Waves seen as ground surface object, the tumbled on toast

Richter scale, one to 10 logarithmic
4-5 is lights 5 - 6, moderate, 6-7, strong, 7-8, major, 8-9 great