1.5 Congo

Question 1

When did this volcano eruption occur?

Answer 1

2002

Question 2

How many people were killed and evacuated?

Answer 2

147 killed
400,000 evacuated

Question 3

What type of volcano was it?

Answer 3

Shield volcano

Question 4

Extra info

Answer 4

Responsible for 40% of Africas volcanic eruptions
2km wide continuous lava lake

Question 5

Lava flows:

Answer 5

• Molten magma on the earths surface is so hot, it flows
• Viscosity determined by the amount of silicon dioxide
• Buildings can be burnt and covered if it’s runny

Question 6

Gas / steam emissions:

Answer 6

H20 vapour : heavy rainfall events, then potentially lahars
So2: forms very fine particles that get into the stratosphere. These can cause acid rain (which corrodes buildings and affects vegetation)
Fluorine: gas is poisonous in high concentrations and contaminates farmland or water supply
Co2 - need 700/eruptions a year to match human cause emissions

Question 7

Lahars

Answer 7

Water mixes with volcanic deposits and flows rapidly along existing valleys
Lahar flow is very fast and can carry large amounts of materials

Question 8

Ash / tephra

Answer 8

Carried high into the atmosphere
Most ash falls locally, causing roofs to collapse, choke machinery and electronics, breathing difficulties for people and animals, buried crops and vegetations
It can disrupt flight path of planes

Question 9

Pyroclastic flows

Answer 9

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