Statistics for Technology by Letter: O

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Hint	Answer	% Correct
Hot chamber, e.g. for cooking	Oven	94%
Tells you how far your car has travelled	Odometer	81%
Viscous organic fluid, lubricant	Oil	81%
Wooden board to propel a boat	Oar	56%
Underwater petroleum extraction	Offshore drilling	56%
Relationship between Volt and Ampere	Ohm's law	56%
Display technology based e.g. on polymers	Organic Light-emitting diodes (OLED)	44%
Courtship on the internet	Online dating	38%
Makes electrical signals visible	Oscilloscope	38%
Atmospheric result of using CFCs as refrigerant	Ozone hole	31%
Printing technique	Offset printing	19%
Tool to look into ears	Otoscope	19%
A Mars rover	Opportunity	6%
Laser tool to put molecules in the right place	Optical tweezers	0%