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Flashcards in L4 - Sublime Or Ridiculous Deck (20)
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1

How can ash from volcanic eruptions affect communications/transport

Ash can damage plane engines and make it difficult for planes to travel eg. Air travel disruption after 2010 Eyjafjallajökull eruption causing worldwide flight delays

2

What is a long-term positive impact of an eruption?

Improved soil - land is more fertile

3

What is the effect of lava bombs?

Volcanic (lava) bombs can rain down on settlements, which impacts properties and people due to lava flow.

4

What can accumulations of ash cause?

Roofs to collapse

5

Pyroclastic flow is a typical impact of an eruption. Define pyroclastic flow

A dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing at great speed.

6

What is the effect of heavy rainfall following an eruption?

Flooding

7

What is are lahars?

When ash and mud from a volcanic eruption mix together with rain or melting snow - so fast mudflows called lahars are created

8

Earthquakes often occur with volcanic eruptions. Name a common effect of these earthquakes

Ground shaking
buildings get damaged

9

In Jokhlulhaup Iceland, there was an eruption. How many flights were cancelled as a result?

100,000 flights ($1.7 billion)

10

Name physical primary changes due to the Jokhlulhaup eruption

Lightning storm
Heavy rain causing flooding
Poisonous gases

11

In Jokhlulhaup how many tonnes of flowers were destroyed?

400 tonnes ($3.8 billion)

12

What happened to agricultural output following the Jokhlulhaup eruption

It declined

13

What is a seismometer?

An instrument that measures and records details of seismic activity, such as force and duration. (Can help predict where and when earthquakes or volcanic eruptions will happen)

14

How far can lahars flow from their source volcanoes?

100km

15

Name a secondary physical impact of a volcanic eruption

Improved soils
Climate cols - less co2 from planes/ more so2 from volcanoes
Jokulhluaps - glacier megalfood

16

Who was stranded in Svalbard without food or water

Sir David Attenborough and his team

17

What happened at Raufarfell - secondary economic impact of the eruption in Iceland

Livestock grazing

18

What economic aspects were disrupted due to the volcanic eruption in Iceland - secondary impact

Employment and travel

19

Name a secondary social effect of the eruption

Threats to life consequential on these in remote communities or in the past
Decline in income consequential

20

What can ash do to plane windows

It sandblasts them