Main types of extrusive landforms

Question 1

Whats the pneumonic to remember main types of extrusive landforms?

Answer 1

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Question 2

What is a lava plateaux formed from?

Answer 2

fissure eruptions

Question 3

What are the lava flows for a lava plateaux?

Answer 3

basaltic so travel far

Question 4

What are the slopes of lava plateaux like?

Answer 4

flat and featureless

Question 5

Where do lava plateaux occur?

Answer 5

at divergent margins

Question 6

Whats an example of a lava plateaux?

Answer 6

Antrim lava plateaux, northern ireland

Question 7

What type of lava are basic/shield volcanoes formed from?

Answer 7

free-flowing, basaltic lava

Question 8

What type of slopes do basic/shield volcanoes have?

Answer 8

gentle sides that cover a large area

Question 9

Where do basic/shield volcanoes occur?

Answer 9

divergent margins/hotspots

Question 10

Whats an example of a basic/shield volcano?

Answer 10

Mauna Loa, Haiwaii

Question 11

What are the sides and cone of acid/dome volcanoes like?

Answer 11

steep-sided convex cones

Question 12

What lava do acid/dome volcanoes consist of?

Answer 12

rhyolitic lava, viscous

Question 13

Where do acid/dome volcanoes usually occur?

Answer 13

convergent plate margins

Question 14

Whats an example of an acid/dome volcano?

Answer 14

Puy region, france

Question 15

What are ash and cinder cones formed from?

Answer 15

ash, cinders and volcanic bombs ejected from the crater

Question 16

What are the sides of ash and cinder cones like?

Answer 16

steep-sided and symmetrical

Question 17

Whats an example of an ash and cinder cone?

Answer 17

Paricutín, Mexico

Question 18

What are the shape of composite cones?

Answer 18

classic pyramid shaped volcanoes

Question 19

What do composite cones consist of?

Answer 19

layers of ash and lava that are usually andesitic

Question 20

What are examples of composite cones?

Answer 20

Mount Etna, Mount Fuji (Japan)

Question 21

How is a caldera formed?

Answer 21

when the build up of gases becomes extreme and a huge explosions removes the summit of the cone, leaving an opening several km in diameter

Question 22

What might the caldera become flooded by?

Answer 22

the sea, or a lake might form within it

Question 23

Where do calderas often occur?

Answer 23

at convergent margins

Question 24

What lava do calderas produce?

Answer 24

rhyolitic and andesitic

Question 25

Whats an example of a caldera?

Answer 25

Krakatoa (Indonesia) Santorini (Greece)