Volcanoes and Eyjafjallajokull

Lava, as opposed to the Magma Chamber is an example of ...

• Extrusive Volcanic Features

• Igneous rock

• Molten Rock

• A Pyroclastic Flow

The presence of the mineral, Silica, makes lava ...

• Thinner

• Thicker

• Redder

• Hotter

We call lava with lots of Silica ..... Lava

• Strong

• Acid

• Basic

• Thick

Ash in the atmosphere blew across northern Europe and ...

• People in Norway were effected by a pyroclastic flow

• The sky went very dark

• Caused planes to be grounded, and flights to be delayed

• Volcanic Bombs reigned down on London

Magma Chambers are an example of ...

• Igneous Rock

• Lava

• Intrusive Volcanic Features

• Shield Volcanoes

Thick, acid lavas and ash falls make .... volcanoes?

• Big

• Shield

• Pyramidal

• Composite

Which element listed is not part of a Shield Volcano?

• Lava

• Ash

• Side Vent

• Crater

Shield Volcanoes are very broad. Why?

• The lava is very dense and so gravity has a greater affect here

• Very big explosions

• They are formed in valleys and have opportunity to spread out

• Thin, basic lava flows away from the vent quickly

When did Eyjafjallajokull erupt?

• Between March and June 2008

• Between March and June 2010

• Between March and June 2020

• Between March and June 2000

Eyjafjallajokull is a shield volcano, has thin lava, but erupted lots of ash. Why?

• The vent of the volcano (lava tube) was blocked by solid rock

• Lava had to melt through a glacier. Reaction with water caused ash

• The atmosphere in Iceland was very cold

• It was an anomalous eruption