Volcanoes Flashcards
(20 cards)
Define volcanoes
A mountain with a crater full of magma and lava
How many volcanoes erupt each year worldwide?
50
How many are still active?
500
How many off them erupt?
10% of them
How many of them are in the Ring of Fire?
75% of them.
How many plate are there?
8
How many plate boundaries are there?
4
What is a seismometer?
It is a measuring machine that measures earthquakes caused by moving magma or rising magma.
What is a spectrometer?
The unit of measurement that measures gas emitted from the volcano.
What is a tilt meter?
The unit of measurement that shows the changes in the volcano shape
What is a thermometer?
A transparent measuring stick that measure the temperature in the water.
What are the hazards of a volcano?
Ash clouds, pyroclastic flows, lava flows and volcanic mud flows.
What are the pros of an eruption?
Tourism, geothermal power heats places, GTP is used to grow crops and rocks from volcanoes have gemstones.
What are the cons of volcanoes?
Death and destruction
When did the eruption of Mount Merapi happen?
26th October 2010.
Where is Mount Merapi?
In Java, Indonesia.
How many fatalities occurred during the eruption?
353
How many people were evacuated?
350,000.
How long did it last for?
For 1 month and 4 days (30th of November).
What is geothermal power made from?
Steam created by hot earth boiling water.
