EDEXCEL A-LEVEL GEOGRAPHY: Tectonic Processes & Hazards

What are the three main layers of the Earth as shown in the diagram?

• The Crust, The Mantle, The Inner and Outer Core

• The Lithosphere, The Asthenosphere, The Mesosphere

• The Crust, The Lithosphere, The Asthenosphere

Fill in the blank: The ________ is the Earth's outermost layer, varying in thickness from 5-10km beneath the ocean.

• crust

• mantle

• core

• asthenosphere

What is a tectonic plate?

• A perfectly shaped solid block of rock

• A massive, irregularly shaped slab of solid rock, composed of both continental and oceanic lithosphere

• A thin layer of liquid rock

Match the following types of plate boundaries with their descriptions:

• 1-A

• Two plates of oceanic crust collide and the older, denser plate subducts, creating volcanic island arcs.

• 3-B

• Subduction of an ocean plate at oceanic and continental plate margins leads to fold mountains & volcanoes.

• 2-C

• Two plates carrying continental crust collide, forming fold mountains.

The Benioff Zone is an inclined zone of earthquake activity associated with subduction zones.

• True

• False

Which of the following is NOT evidence for the theory of plate tectonics?

• Rock sequences

• Fossil records

• Living species

• Weather patterns

Fill in the blank: The point within the crust where pressure is released during an earthquake is called the ________.

• focus

• epicenter

• fault

• seismic zone

Which type of seismic wave travels through both solids and liquids?

• P Waves

• S Waves

• Surface Waves

Fill in the blank: A ________ is a thick, viscous lava fragment that is ejected from a volcano.

• volcanic bomb

• ash cloud

• lava tube

• pyroclastic flow

Which of the following is a secondary earthquake hazard?

• Liquefaction

• Subduction

• Plate movement