Chapter 6

Question 1

Structure of the earth

Answer 1

CMOI
solid liquid liquid solid
outermost player, 1000 to 1200, 4000 to 5000 ,5000 to 6000, silicon and oxygen silicate minerals ,iron and nickel ,iron and nickel

Question 2

Tectonic plates

Answer 2

Tectonic plates move slowly convection current control movement of the tectonic plates

Question 3

Constructive plate foundry

Answer 3

When two oceanic plates move away from each other magma rises to the surface forming lava lava solidifies forming new basiltic ocean crust also forms submarine non explosive volcanoes when 2 continental plates move away from each other a Rift Valley is formed

Question 4

Destructive blade boundary

Answer 4

When oceanic plate and continental plate move towards each other where denser oceanic plate is subducted under lighter continental plate heat due to friction and pressure turns the descending plate into magma magma rises and erupts through the rocks the cracks of the rocks forming explosive composite volcanoes

Question 5

Fold mountains

Answer 5

When continental plates move towards each other sediments between those two plates are compressed forming sedimentary rocks due to pressure rocks are pushed upwards to form fold mountains

Question 6

Conservative blade boundary

Answer 6

Two plates slide past each other where they get locked in and friction occurs so building up of pressure occurs releasing earthquake the magnitude of earthquake can be measured using on vector scale

Question 7

What are the causes of volcanoes

Answer 7

Tectonic activity
describe destructive and constructive

Question 8

What are the causes of earthquakes

Answer 8

Describe conservative tectonic activity earthquakes occur also in destructive and constructive

Question 9

Focus

Answer 9

Where the earthquake begins underground

Question 10

Epicenter

Answer 10

Point on the surface above the focus

Question 11

Seismometers

Answer 11

Used to measure the magnitude of earthquake using rector scale

Question 12

Factors that affect the impact of the earthquake

Answer 12

Location of the epicenter
population density
maintaining communication severity of the aftershocks
cut off gas supply
availability of drinking water time and duration of the earthquake
strength of the buildings to withstand the damage