Volcanoes Flashcards
(23 cards)
Ash falls
Ash is thrown high into the air and then down covering the land
Volcanic blast
Explosive blasts from volcanic eruptions carry rock debris
Lava flow
Molten rock flowing from volcanoes
Pyroclastic flows
Avalanches of ash, fragments of rock and superheated gas flows
Earthquakes
Lava flows and pyroclastiques flows
Lahars
Mudflows when heavy rainfalls
Sulphur dioxide
Emitted during an eruption causing respiratory problems
People living close to volcanoes
The soil around volcanoes is fertile
People living close to volcanoes
Volcanoes are tourist attractions
People living close to volcanoes
Volcanoes are a source of geothermal energy
Tectonic plates
Parts of the earth’s crust move due to convection currents
Continental drift
The movement of the continents
Constructive plate boundary
Two plates move apart
Destructive-collision plate boundary
Two continental plates collide upwards to form fold mountains
Major plates
14
Destructive-subduction plate boundary
One plate moves under another
Primary effect
An effect that is directly effecting a natural hazard
Secondary effect
An effect that is indirectly effecting a natural hazard
Landslide
On the slopes of volcanic eruptions
Acid raid
Sulphur dioxide mixes with rainwater
Minor plates
38
Plate total
52
Conservative plate boundary
Two plates slide past each other in opposite directions
