Geology Chapter 2.9 0.0 / 5 ? Geologymagma moving A2/A-levelOCR Created by: abbbywCreated on: 01-01-18 09:45 Tiltmetres designed to measure very small changes in vertical level 1 of 5 GPS (Global Positioning System) radio navigation system that allows the determination of an exact position 2 of 5 Fumaroles openings in / near a volcano, through which hot gases emerge 3 of 5 Harmonic tremors result of magma vibrating in the vent, as it moves upwards 4 of 5 Earthquakes provide earliest warning that magma is moving 5 of 5
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