Geological Extremes Quiz

20 out of 24. Not too bad! Fun quiz!

I'm wondering on what basis you classified Niagara as the "biggest waterfall." I'm pretty sure that either Victoria/Zambezi falls and/or Iguazu Falls outshine Niagara in most measurable categories.

It is Niagara, surprising isn't it. A good 35% more mean annual flow rate than Iguazu and more than tiwce the annual flow rate of Victoria. http://www.worldwaterfalldatabase.com/largest-waterfalls/volume/ There are some falls in that list above Niagara but they appear to be rapids and not free falls.

I'd guess they are going by volume / flow rate. Niagra is about 2400 m3/s while Iguazu is a hair over 1700 m3/s and Victoria comes in about 1000. (source: Wikipedia).

i thought Everest was the highest mountain and mauna kea in hawaii was the tallest?

Mauna Kea in Hawaii is tallest when measured from its base; it rises over 10,200 feet m(6.3 mi) when measured from its base on the mid ocean floor, but only attains 4,205 m (13,796ft above sea level). http://en.wikipedia.org/wiki/Mount_Everest#Comparisons

I should've known Dead Sea! And I kept misspelling Sicily! Arrgh...

100% I don't know why but I just love gepgraphy

I kept on saying stupid yellow river, thames, and Victoria falls. Those three screwed me.. I should have known yangtze though

Strictly speaking, Denali is the world's tallest mountain from base to peak above sea level, since everest's base is on the Tibean plateau. Highest would be a better word.

@Copper no. Mauna Kea is. If it isn't then every book on mountains and even the Field Museum in Chicago, IL are liars.

@xolkan no. I went there and the hawaiians said that it was at least 14,000 feet above sea level.