Y8 Geo Revision 1

What is a fault?

• a place on Earth where earthquakes cannot occur

• a fracture in Earth where movement has occurred

• the place on Earth’s surface where structures move during an earthquake

• another name for an earthquake

What is an earthquake’s epicenter?

• the place on the surface directly above the focus

• a spot halfway between the focus and the surface

• the spot below the focus

• any spot along the nearest fault

Where do most earthquakes occur?

• in the mountains of Africa

• around the edge of the Pacific Ocean

• around the edge of the Atlantic Ocean

• on the western lowlands of Europe

Liquefaction occurs when

• large waves wash over coastal areas and destroystructures

• earthquakes occur in the ocean and damage ships at sea.

• loose, saturated soil turns into liquid that can’t support buildings.

• mud slides downhill and buries buildings.

Violent shaking from an earthquake can cause soil and rock on slopes to move and cause a

• fault

• landslide

• tsunami

• sinkhole

Earth’s thin, rocky outer layer is its

• core

• mantle

• crust

• outer core

What does Earth’s crust and uppermost mantle form?

• asthenosphere

• hydrosphere

• lithosphere

• atmosphere

The Earth’s core is made of an alloy of

• iron and nickel.

• copper and iron.

• zinc and magnesium.

• iron and zinc.

Earth’s inner core is solid because of

• the composition of its rock.

• its great diameter.

• extreme cold.

• immense pressure.

An instrument that detects and measures earthquakes is a 

• seismogram
• focus seismic map
• focus
• seismograph