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The name Earth is at least 1,000 years old. All of the planets, except for Earth, were named after Greek and Roman gods and goddesses. However, the name Earth is a Germanic word, which simply means “the ground.”
Earth is the third planet from the Sun and the only astronomical object known to harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all of Earth's water is contained in its global ocean, covering 70.8% of Earth's crust.
Oct 15, 2019 · The modern name “earth” is believed to be at least 1,000 years old. Initially, the Anglo-Saxons elected to name the earth “erda.” Anglo-Saxons were a people of Germanic origin who conquered and occupied Great Britain in the 5 th century.
- Ferdinand Bada
Earth also turns around in space, so that different parts face the Sun at different times. Earth goes around the Sun once (one year) for every 365 1 ⁄ 4 times it turns around (one day). Earth is the only planet in the Solar System that has a large amount of liquid water on its surface.
Oct 4, 2017 · Earth makes a full spin around its axis once every 24 hours, or one day. The axis is an imaginary line through the center of the planet from the North Pole to the South Pole. Rather than straight up and down, Earth’s axis is tilted at an angle of 23.5 degrees.
Earthquakes result when plates grind past one another, ride up over one another, collide to make mountains, or split and separate. Earth's global ocean, which covers nearly 70% of the planet's surface, has an average depth of about 2.5 miles (4 kilometers) and contains 97% of Earth's water.
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Apr 27, 2021 · The Earth consists of three distinct layers; crust, mantle, and core. The core is split into an outer and inner core made up of iron and nickel. The inner core is about 1,221 kilometers thick, while the outer core is 2,259 kilometers thick.
