Tectonic Processes

Question 1

Lava flows

Answer 1

Streaks of lava that flows form a volcanic vent

The viscosity and speed depends on the type of volcanic eruption

Question 2

Pyroclastic flow

Answer 2

Caused by a very explosive eruption when the eruption column itself collapses and can’t continue to rise
Might happen when the material boils over from an eruption vent

Question 3

Tephra

Answer 3

Tiny particles of ash and rock and natural glass blasted into the air by a volcanic eruption
Transported by winds fr thousands of miles
Electrostatic can prompt thunderstorms which can cause Lahars

Question 4

Gas eruptions

Answer 4

Magma contains dissolved gases and these are released from the liquid magma as it reaches the surface

Question 5

Lahars

Answer 5

Caused by rain mixing with either ash on the steep side of the volcano creating a big mudflow or ash mixing with rain

Question 6

Jokulhlaups

Answer 6

Volcano beneath an ice cap erupts and large amounts of ice melts bursting out from the ice cap erupts and surging across the plain surrounding the ice caps