Top 10 lakes factsLakes quiz
What kind of ships have typically the longest lifespan?
Great Lakes freighters. Since the freshwater lakes are less corrosive to ship than the salt water of the oceans, many of the Lakers remain in service for long periods and the fleet has a much higher average age than the ocean-going fleet. The St. Mary's Challenger, built in 1906, is currently the oldest boat on active duty on the Lakes.
Where was this photo taken most likely?
In Israel. The Dead Sea is one of the world's saltiest lakes. Its water has a density of 1.240 kg/l, which makes swimming similar to floating. For comparison, fresh water has 1.0 kg/l and average seawater has 1.025 kg/l.
In moderate and cold climates, a tree gains one ring every year, which allows us to estimate its age. Where else we can estimate age in similar fashion?
At the bottom of the lake, sedimentation. At the bottom of some lakes the sediments stay very well preserved. Lamina lucida and lamina densa are created during the one year cycle. This fact can be used as lake's age estimation.
Where is the saltiest lake in the world?
In Antarctica. With a salinity level of over 40%, Don Juan Pond is the saltiest of the Antarctic lakes. This salinity allows the pond to remain liquid even at temperatures as low as −50 °C (−58 °F) due to the interference of salts with the bonding of water molecules. Don Juan Pond was discovered in 1961 by George H. Meyer.
The Elevation of Lake Superior is 183m, Michigan 177m, Huron 176m and Erie 174m. How about Ontario?
75m. The gradient between The Great Lakes is generally very shallow. However, the descent between Erie and Ontario is greater than between any of the others, and includes the spectacular Niagara Falls, 51m high.
What is the largest lake in the world?
Caspian Sea. In the past, Caspian Sea was a part of the Tethys Ocean. It became landlocked about 5.5 million years ago due to tectonic uplift and a fall in sea level. With the total area of 370 000 square km, the lake is larger than Germany.
The Caspian Sea, the largest lake in the world, is:
North freshwater, south saltwater, east super salty. The Caspian Sea, fed by freshwater (sweet) rivers, mainly Volga (80%) and Ural in the north, is freshwater, while it's deeper, warmer and saline (1.2%) in the south. The salinity of Garabogazköl, shallow eastern bay is 35%!