Tectonics

Question 1

4 layers of earth

Answer 1

crust
mantle
outer core
inner core

Question 2

All continents used to be joined together…

Answer 2

Pangea

Question 3

Lithosphere

Answer 3

• uppermost layer
• cool and brittle

Question 4

Asthenosphere

Answer 4

Layer that plates move on

Question 5

Crust

Answer 5

Rock

Question 6

Mantle

Answer 6

Magma and molten rock

Question 7

Outer core

Answer 7

Liquid

Question 8

Inner core

Answer 8

Solid

Question 9

2 types of tectonic plates

Answer 9

Oceanic
Continental

Question 10

Oceanic plates

Answer 10

Newer
Heavier
Can sink
35-70 km

Question 11

Continental plates

Answer 11

Older
Lighter
Cannot sink
6-10 km

Question 12

What causes plates to move?

Answer 12

Magma which produces convection currents

Question 13

4 types of plate boundaries

Answer 13

Convergent
Divergent
Conservative
Collision

Question 14

Convergent

Answer 14

2 plates meet each other
OP sinks beneath CP
Destroyed in mantle

Volcanoes and earthquakes form
ex. Japan

Question 15

Divergent

Answer 15

2 plates move away (new crust)
Pulled apart by convection currents

Volcanoes and earthquakes form
ex. Mid Atlantic Ridge, Iceland

Question 16

Conservative

Answer 16

2 plates slide past each other
No crust is formed or destroyed

Earthquakes form
ex. San Andreas Fault, USA

Question 17

Collision

Answer 17

2 plates meet and lift
Neither can sink so they push upwards
Forms mountains

Earthquakes form
ex. Himalayas, China,Nepal, India

Question 18

What is a tsunami?

Answer 18

series of waves in a body of water