What makes up the land part of the Earth?

What makes up the land part of the Earth?

Mountains, valleys and flat places make up the land. The air is made of different gases. One of the gases is oxygen. Oceans, lakes, rivers, streams, rain, snow and ice are made of water.

What covers 1/6 of Earth’s land area?

The territory of the Arctic occupies approximately one-sixth of the Earth’s surface area. Nature in the Arctic is without equal and rich in contrasts – endless expanses of ice and snow turn into prodigal abundances of wildflowers and berries that confound the imagination.

How is land created?

Tectonic plate movement under the Earth can create landforms by pushing up mountains and hills. Erosion by water and wind can wear down land and create landforms like valleys and canyons. Both processes happen over a long period of time, sometimes millions of years.

Who named Planet 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 percent of Earth is land?

Less than 30% of the 510 million square kilometers of area on the Earth’s surface is covered by 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.

What percent of Earth is water?

71 percent
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 made up the Earth’s with life?

A special planet: the habitable Earth What makes the Earth habitable? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.

How long ago did life begin?

3.5 billion years ago
We know that life began at least 3.5 billion years ago, because that is the age of the oldest rocks with fossil evidence of life on earth. These rocks are rare because subsequent geologic processes have reshaped the surface of our planet, often destroying older rocks while making new ones.

How did the Earth get water?

Multiple geochemical studies have concluded that asteroids are most likely the primary source of Earth’s water. Carbonaceous chondrites–which are a subclass of the oldest meteorites in the Solar System–have isotopic levels most similar to ocean water.