Seventy percent of the Earth's surface is covered by water, while the remaining 30 percent consists of the seven continental landmasses. The Earth is unique among the known planets in that is has an abundance of liquid water.Know More
The outer layer of the Earth, known as the crust, was formed 4.5 billion years ago when lava cooled to create a hard surface. The crust is broken into several large continental plates that are in constant movement. These plates drift upon the asthenosphere of Earth's upper mantle, moving slowly in relation to each other. Earthquakes are the result of collision between these plates. Many of the Earth's land features, such as mountain ranges, are a result of their movement.
Earth's crust is made up of several different chemical elements. While iron, oxygen and silicon are the most abundant elements within the crust of the Earth, there are several other elements present in smaller quantities. While the crust is only 3 miles deep at its thinnest point below the oceans, it may be up to 46 miles in depth below the continents. The oceans that cover the vast majority of Earth's surface are thought to have formed by the impact of comets over millions of years.Learn more about Earth Science
Geysers are located in areas where an underground water source can heat up enough to explode through an entrance to the surface. The presence of geothermal energy and fissures in the earth near tectonic plate boundaries create the ideal locations for geysers.Full Answer >
Salt water can refer to a solution of salt and water, or the water contained in oceans and seas that has a high level of dissolved salt. Humans cannot drink a large amount of salt water without facing adverse health effects.Full Answer >
According to the U.S. Geological Survey, water makes up about 71 percent of the Earth's surface. About 96.5 percent of that water is in the oceans. Bodies of water, rivers, icecaps and water vapor hold much of the rest of the water.Full Answer >
Around 71 percent of the Earth's surface is covered in water. The world's oceans hold more than 96 percent of that water and the rest is located in the air, rivers, streams, lakes and other bodies of water.Full Answer >