Definitions for planet earth
planet earth

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1. planet earth

   Earth is the third planet from the Sun and the only place known in the universe where life has originated and found habitability. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. Approximately 70.8% of Earth's surface is made up of the ocean, dwarfing Earth's polar ice, lakes, and rivers. The remaining 29.2% of Earth's surface is land, consisting of continents and islands. Earth's surface layer is formed of several slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth's liquid outer core generates the magnetic field that shapes the magnetosphere of Earth, deflecting destructive solar winds. The atmosphere of Earth consists mostly of nitrogen and oxygen. Greenhouse gases in the atmosphere like carbon dioxide (CO2) trap a part of the energy from the Sun close to the surface. Water vapor is widely present in the atmosphere and forms clouds that cover most of the planet. More solar energy is received by tropical regions than polar regions and is redistributed by atmospheric and ocean circulation. A region's climate is governed not only by latitude but also by elevation and proximity to moderating oceans. In most areas, severe weather, such as tropical cyclones, thunderstorms, and heat waves, occurs and greatly impacts life. Earth is an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution. The Earth rotates around its own axis in slightly less than a day (in about 23 hours and 56 minutes). The Earth's axis of rotation is tilted with respect to the perpendicular to its orbital plane around the Sun, producing seasons. Earth is orbited by one permanent natural satellite, the Moon, which orbits Earth at 384,400 km (1.28 light seconds) and is roughly a quarter as wide as Earth. Through tidal locking, the Moon always faces the Earth with the same side, which causes tides, stabilizes Earth's axis, and gradually slows its rotation. Earth, like most other bodies in the Solar System, formed 4.5 billion years ago from gas in the early Solar System. During the first billion years of Earth's history, the ocean formed and then life developed within it. Life spread globally and began to affect Earth's atmosphere and surface, leading to the Great Oxidation Event two billion years ago. Humans emerged 300,000 years ago, and have reached a population of 8 billion today. Humans depend on Earth's biosphere and natural resources for their survival, but have increasingly impacted the planet's environment. Humanity's current impact on Earth's climate and biosphere is unsustainable, threatening the livelihood of humans and many other life, causing widespread extinctions.

Editors ContributionRate this definition:0.0 / 0 votes

1. planet earthadjective

   A planet

   Planet earth is so beautiful, amazing to view from space

   
   

   Submitted by MaryC on February 25, 2023  

How to pronounce planet earth?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say planet earth in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of planet earth in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of planet earth in Pythagorean Numerology is: 3

Examples of planet earth in a Sentence

1. Hosam Zowawi:

   Yet, it is also very important to consider that a very small portion of the caves on planet earth have been discovered and the microbial ecology of the discovered caves are heavily understudied.

2. Sipho P Nkosi:

   The planet Earth was a gift to us, we should have taken care of it with love.

3. Tim Peake:

   Christmas Day is generally a time for friends and families to get together, and although we can't be with our families this year, we will be orbiting the Earth 16 times on Christmas Day and sending all our good wishes to everybody back down on beautiful planet Earth.

4. Michael Garcia:

   Finding Earth's largest shield volcano in the 21st Century is a surprising discovery, but then we know more about the surface of Mars than what is below the ocean on Earth, we are still discovering things about our physical planet that we did not know. There is still much to learn about planet Earth.

5. Steven Wright:

   A friend of mine once sent me a postcard with a picture of the entire planet Earth taken from space. On the back it said, Wish you were here.

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Planet_Earth