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1) Earth has liquid water on its surface. Planet Earth. Earth is the only planet in the Solar system that is located in the habitable zone. The habitable zone (also called the goldilocks zone) is the area around a star where a planet could support liquid water. The distance varies from star to star and depends on its size and type.
- Earth is the third planet from the sun in our solar system. Its name comes from the the old English and Germanic words meaning ‘the ground’.
- Our amazing planet has been around for quite some time. By researching our planet’s rocks, scientists have calculated the Earth to be around 4.5 billion years old!
- Like all the planets, Earth orbits (travels around) around the sun. And it does so at some serious speed –– around 30 kilometres per second, in fact!
- Have you ever wondered why we have different seasons? We’ll tell you –– it’s because the Earth is tilted 23.4 degrees on its ‘axis’, an imaginary line straight through the middle of the planet form the North Pole to the South Pole.
Jan 25, 2023 · The Earth is a Unique Planet as it is the only planet that supports life in the solar system. Earth is also called a blue planet or water planet. It is the third planet from the Sun and the fifth largest planet in the solar system. Earth’s spherical shape is best represented using the globe. Man has constantly explored the four realms of the ...
- Ans: Earth is called a unique planet because it is the only planet that supports life. Earth has oxygen to breathe, moderate temperatures to sustai...
- Ans: Moon is the closest celestial body to our Earth.
- Ans: Earth is present at the right distance from the Sun. It is protected from harmful solar radiation by the ozone layer, and it is kept warm by a...
- Ans: Mars has only 0.13% of oxygen. It is dominated by a maximum amount of carbon dioxide.
- Ans: The microbes are the first life on the Earth.
- Crust. Temperature: 475 K (∼200°C) at the surface to 1300 K (∼1000°C) Thickness: 25 miles (32 km) for continental crust and 3-5 miles (8 km) for oceanic crust.
- Upper Mantle. Temperature: 1200 K (∼ 932°C) at the upper boundary with the crust to 1900 K (∼1652 °C) at the boundary with the lower mantle. Thickness: 255 miles (410 km)
- Lower Mantle. Temperature: 1900 K (∼ 1600°C) in the outer regions which can reach up to 4300 K (∼4000°C) at the bottom. Thickness: 1,400 miles (2,250 km)
- Outer Core. Temperature: 4,300 K (4,030°C) in the outer regions to 6,000 K (5,730°C) closest to the inner core. Thickness: 1,355 miles (2,180 km) Density: 9,900 – 12,200 kg/m3.
- Namesake. 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.”
- Potential for Life. Earth has a very hospitable temperature and mix of chemicals that have made life abundant here. Most notably, Earth is unique in that most of our planet is covered in liquid water, since the temperature allows liquid water to exist for extended periods of time.
- Size and Distance. With an equatorial diameter of 7926 miles (12,760 kilometers), Earth is the biggest of the terrestrial planets and the fifth largest planet in our solar system.
- Orbit and Rotation. As Earth orbits the Sun, it completes one rotation every 23.9 hours. It takes 365.25 days to complete one trip around the Sun. That extra quarter of a day presents a challenge to our calendar system, which counts one year as 365 days.
Oct 11, 2024 · Structure and Surface. Earth is a terrestrial planet. It is small and rocky. Earth's atmosphere is the right thickness to keep the planet warm so living things like us can be there. It’s the only planet in our solar system we know of that supports life. It is mostly nitrogen, and it has plenty of oxygen for us to breathe.
People also ask
What makes Earth unique?
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Why is Earth special?
What are some interesting facts about the layers of the Earth?
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Aug 1, 2023 · The outer core extends from 2,900 km to about 5,150 km beneath the Earth’s surface. It mainly consists of liquid iron and nickel. The motion within this layer generates the Earth’s magnetic field. The Inner Core. The inner core is the central part of the Earth. It extends from a depth of about 5,150 km to the Earth’s center at about 6,371 km.
