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Volcanoes - Coggle Diagram
Volcanoes
Measuring volcanic activity
GPS
Monitors Earth's surface, records any changes to volcanic shape.
Satellite radar
Records images; accurately changes of deformation in volcanic shape.
Tiltmeter
Small bubble in water, used to detect any change in slope level.
Electronic distance measurement
Horizontal movement of volcano; device sends laser signal to reflector, which returns it.
Types
Dormant
Hasn't erupted recently; likely to erupt again.
Extinct
Will not erupt.
Active
Erupted recently; will erupt.
Lava
Acidic
Destructive plate boundaries; high sand content.
Basic
Runny; hot; constructive plate boundaries; forms gently sloping volcanoes.