Table of Contents
How large is the ocean?
360 million square kilometers
The ocean covers roughly 71% of our planet’s surface, some 360 million square kilometers, an area in excess of the size of 36 U.S.A.’s. It’s such a vast spread, when viewed from space, the ocean is, by far, the dominant feature of our planet.
How big is the ocean compared to land?
(o). Introduction to the Oceans
|Surface||Percent of Earth’s Total Surface Area||Area Square Kilometers|
|Earth’s Surface Area Covered by Land||29.2%||148,940,000|
|Earth’s Surface Area Covered by Water||70.8%||361,132,000|
What percentage of Earth is water?
Water covers 71 percent of Earth’s surface.
Is the Earth made up of 75 water?
Viewed from space, one of the most striking features of our home planet is the water, in both liquid and frozen forms, that covers approximately 75% of the Earth’s surface. Earth is a water planet: three-quarters of the surface is covered by water, and water-rich clouds fill the sky. (NASA.)
How much of Earth’s water is salt water?
Over 97 percent of the earth’s water is found in the oceans as salt water. Two percent of the earth’s water is stored as fresh water in glaciers, ice caps, and snowy mountain ranges.
Why is the ocean salty?
Ocean salt primarily comes from rocks on land and openings in the seafloor. Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks. This releases ions that are carried away to streams and rivers that eventually feed into the ocean.
How many sharks are in the ocean?
There are over 400 different species of shark. Some estimates suggest over a billion sharks in the ocean.
What ocean is the deepest?
The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.S. territorial island of Guam. Challenger Deep is approximately 36,200 feet deep.
Will we run out of water?
While our planet as a whole may never run out of water, it’s important to remember that clean freshwater is not always available where and when humans need it. In fact, half of the world’s freshwater can be found in only six countries. Also, every drop of water that we use continues through the water cycle.
Is the Earth 75% water?
Viewed from space, one of the most striking features of our home planet is the water, in both liquid and frozen forms, that covers approximately 75% of the Earth’s surface. …
Is the Earth 70 percent water?
About 71 percent of the Earth’s surface is water-covered, and the oceans hold about 96.5 percent of all Earth’s water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers, and even in you and your dog.