What does 'highest mountain' mean exactly? Actually there are many different contenders for this title, depending on how you measure it. Do you know the mountains that are the highest in their classifications? Many are very surprising, and the ones in this quiz aren't just limited to this planet!
No need to type 'Mount' or 'Mt.' when answering, just the name will do.
'Elevation' is height above sea level, the centre of the earth, the Lunar Mean or the Geodetic datum; and 'Height' is maximum height from base to summit.