The 'blue' pages quiz Unit 1.1

What percentage of earthquakes are found in the Pacific Ring of Fire?

• 50%

• 70%

• 80%

• 100%

The oceanic fracture zone (OFZ) includes

• Spain, the Alps, the Middle East and the Himalayas.

• The Middle East, the Himalayas, the East Indies and the Pacific

• Th Red Sea, the Dead Sea and the Middle East.

• The Red Sea, the Dead Sea and California

Earthquakes that occur within a tectonic plate are called:

• Hotspots

• Interplate earthquakes

• Intraplate earthquakes

• Large earthquakes

Approximately how many active volcanoes exist worldwide?

• 500

• 1000

• 800

• 5000

90% of tsunami are generated at subduction zones in which area?

• The Atlantic Ocean

• The Mediterranean Sea

• The Pacific Basin

• The South China Sea

At a divergent oceanic-oceanic plate margin you would expect:

• large, basaltic eruptions and minor, shallow earthquakes

• Large, violent volcanic eruptions

• Small, basaltic eruptions and minor, shallow earthquakes

• Very violent earthquakes

When two continental plates diverge the landform created is:

• An ocean trench

• Fold mountains

• new islands

• A rift valley

Eruptions at constructive margins are small and effusive (flows steadily) as:

• lava has low viscosity and low gas content

• lava has low viscosity and high gas content

• lava has high viscosity and low gas content

• lava has high viscosity and high gas content

A good example of hotspot volcanoes are:

• Mount Pinatubo

• Krakatoa

• Mount Etna

• The Hawaiian Islands

The process of subduction takes place at the following boundary type.

• Destructive

• Constructive

• Conservative

• Collision