Statistics for Geology general knowledge

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Question	Answer	% Correct
Average thickness of oceanic crust [km]	7	60%
average geothermal gradient [°C/km]	30	46%
Term for the formation of mountains through plate tectonics	Orogeny	46%
Term for the mapping of the sea-floor	Bathymetry	21%
Speed of sound in water [m/s]	1500	17%
Boundary between the Lithosphere and Astenosphere	Mohorovicic	11%
Radius of the earth [km]	6370	9%
Divergent plate boundary	Mid oceanic ridge	7%
Largest mass extinction event	Perm-trias	5%
Famous german Research Vessel (Icebreaker)	Polarstern	4%
Age of the earth [Ga]	4,57	3%
Famous scottish geologist known for metamorphic petrology	George Barrow	3%
Rock formed by an impact event	Suevite	3%
Half-life of 14C [a]	5728	2%
Distance between the peak of Everest and the Challenger deep [m]	19832	0%