After looking at lots of atlases and physical geography books on the internet archive, the first mention I found of 70.8% water and 29.2% land is in the German Knaurs WELT-ATLAS, 1932 edition. Even more precise numbers are given by the book Mother Earth by T. A. Ryder in 1930 (so published two years earlier).
What is the percentage of water and land on earth?
In simplest terms, water makes up about 71% of the Earth’s surface, while the other 29% consists of continents and islands.
What percentage of Earth is 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.
What percentage of Earth is land?
There are over 510 million square kilometers of area on the surface of Earth, but less than 30% of this is covered by land. The rest is water, in the form of vast oceans.
Why is there a problem in the amount of water when it makes up 70% of Earth’s surface?
The main causes are population growth, the use of water in agriculture (70% of global water usage is in agriculture), poverty, poor water management and political instability.
Why is there a shortage of water even though it occupies about 71 of the earth surface?
Although water occupies about 71% of the earth’s surface, all of it is not potable water. Most of the water is available in the form of seas and oceans which is salty in nature. This saline water has its limitations and cannot be used for many purposes.
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. Geologic evidence suggests that large amounts of water have likely flowed on Earth for the past 3.8 billion years—most of its existence.
Who Named the Earth?
All of the planets, except for Earth, were named after Greek and Roman gods and godesses. The name Earth is an English/German name which simply means the ground. It comes from the Old English words ‘eor(th)e’ and ‘ertha’. In German it is ‘erde’.
What covers about 30% of the Earth’s land area?
We found 1 solutions for About 30% Of The Earth’s Land Mass . The most likely answer for the clue is ASIA.
Who named our planet?
The Greeks and Romans named most of the planets in the Solar System after particular gods, and we have kept those names in English. Uranus, Neptune and Pluto, all unknown in classical times, were named by the modern astronomers who discovered them, but still after Greek and Roman gods.
How can water be scarce when 71 of the Earth is water?
Even though about 71% of earth’s surface is covered with water, most of this water is not fit for consumption. Freshwater is the only source of useful water which is present in very small quantity thus limiting the accessibility to potable water. Rainwater is an important source of fresh water.
Which covers the Earth about 70% and much of it is in the form of ocean water?
Ocean Waves. The ocean is a huge body of saltwater that covers about 71 percent of Earth’s surface. The planet has one global ocean, though oceanographers and the countries of the world have traditionally divided it into four distinct regions: the Pacific, Atlantic, Indian, and Arctic oceans.
Why is usable water scarce when about 70% of the Earth is covered with water?
Freshwater makes up a very small fraction of all water on the planet. While nearly 70 percent of the world is covered by water, only 2.5 percent of it is fresh. The rest is saline and ocean-based. Even then, just 1 percent of our freshwater is easily accessible, with much of it trapped in glaciers and snowfields.
Who named Earth in the Bible?
Who Named the Earth in the Bible? Translations of the Bible into English was one of the earliest recorded use of the name Earth – ” God called the dry land Earth and the waters that were gathered together he called Seas. And God saw that it was good.
What is Earth’s nickname?
the Blue Planet
Earth has a number of nicknames, including the Blue Planet, Gaia, Terra, and “the world” – which reflects its centrality to the creation stories of every single human culture that has ever existed. But the most remarkable thing about our planet is its diversity.
Who named Moon?
The word moon can be traced to the word mōna, an Old English word from medieval times. Mōna shares its origins with the Latin words metri, which means to measure, and mensis, which means month. So, we see that the moon is called the moon because it is used to measure the months.
Does the Earth have 2 moons?
The simple answer is that Earth has only one moon, which we call “the moon”. It is the largest and brightest object in the night sky, and the only solar system body besides Earth that humans have visited in our space exploration efforts. The more complex answer is that the number of moons has varied over time.
Does the Sun have a name?
The Sun has been called by many names. The Latin word for Sun is “sol,” which is the main adjective for all things Sun-related: solar. Helios, the Sun god in ancient Greek mythology, lends his name to many Sun-related terms as well, such as heliosphere and helioseismology.