What Is Sea Level?
We say that Mount McKinley in Alaska is 20,320 feet above sea level, or that Death Valley, in California, is 282 feet below sea level. And we say that the surface of...
Read MoreWe say that Mount McKinley in Alaska is 20,320 feet above sea level, or that Death Valley, in California, is 282 feet below sea level. And we say that the surface of...
Read MoreHow Do We Measure the Height of a Mountain? Most of our figures for mountain heights were obtained with an “altimeter.” This is kind of barometer that uses...
Read MoreWhat Is Local Mean Sea Level? Sea level is the base level for measuring elevation and depth on Earth. Because the ocean is one continuous body of water, its surface...
Read MoreHow Do Scientists Measure the Depth of the Ocean? Historically, before scientists developed new techniques, the depth of the ocean was actually measured by sending a...
Read MoreHow Much Does the Earth Weigh? Scientists estimate that the Earth weighs about 7 sextillion tons! To get an idea of what that number looks like, you’d have to write a...
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