Earth The place we call home

History behind earth

I believe earth is around approximately 6,000 years old. Scientifically scientist believe that the world is 4.543 billion years old. Currently humans inhabit earth but we are working on ways to leave and go set up colonies on other planets such as mars. Earth is the only planet in our solar system that humans can inhabit without machinery or support systems. Because Earth has a breathable atmosphere. Oxygen is the gas that is required for the life of most creatures. This is present in Earth's atmosphere and also in water. Oxygen is constantly put into the atmosphere by plants and trees. Earth's atmosphere is thick enough to prevent poisonous rays of radiation from getting through it. Therefore Earth's atmosphere also contains a small amount of carbon dioxide. This is a poisonous gas which makes up most of the atmosphere of planets like Venus and Mars and makes them unable to support human life. However, its smaller presence on Earth is useful as it helps to moderate the planet's temperature and is absorbed by plants during photosynthesis to produce oxygen.

Information

Size/Radius: 3,959 mi.

Weight/Mass: 5.972 × 10^24 kg.

Age: 6,000 years or 4.543 billion years.

Inside Earth - The Earth is made of three layers: the crust, mantle and core. The brittle crust and uppermost mantle are together called the lithosphere. Beneath the lithosphere, the mantle is solid rock that can flow, or behave plastically. The hot core warms the base of the mantle, which cause mantle convection. Mantle convection is very important to the theory of plate tectonics.

What does Earth look like?: From space, Earth looks like a blue marble with white swirls. Some parts are brown, yellow, green and white. The blue part is water. Water covers most of Earth. The white swirls are clouds. The brown, yellow and green parts are land. And the white parts are ice and snow.

What have scientist learned about Earth?: It is round.

Human interaction

Have humans been to your planet?: Yes, we live on it.

Does Earth have any moons?: Yes, we have one named "The Moon"

How did Earth get its name?: I believe it got its name when God created land and he called it Earth. Scientifically - The answer is, we don't know. The name "Earth" is derived from both English and German words, 'eor(th)e/ertha' and 'erde', respectively, which mean ground. But, the handle's creator is unknown.

Have any manned or unmanned spacecraft visited Earth?: We live on it so I guess yes because they take of from Earth and come back to Earth so, Yes.

What is the temperature and atmosphere of Earth?: The average temperature on Earth is about 61 degrees F. But temperatures vary greatly around the world depending on the time of year, ocean and wind currents and weather conditions. Summers tend to be warmer and winters colder. Also, temperatures tend to be higher near the equator and lower near the poles. Earth's atmosphere is about 300 miles thick, but most of it is within 10 miles the surface. Air pressure decreases with altitude. At sea level, air pressure is about 14.7 pounds per square inch.

Definitions

Atmosphere: the envelope of gases surrounding the earth or another planet.

Astronomical unit: a unit of measurement equal to 149.6 million kilometers, the mean distance from the center of the earth to the center of the sun.

Magnetic field: a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Satellite: an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.

Evolution: I personally don't believe in evolution. Scientifically - the gradual development of something, especially from a simple to a more complex form.

Aurora: a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, usually near the northern or southern magnetic pole.

Facts and stuff

Earth is the only planet that has an atmosphere containing 21 percent oxygen.

Earth is the only planet that has liquid water on its surface.

Earth is the only planet in the solar system that has life.

Earth is the only inner planet (Mercury, Venus, Earth and Mars) to have one large satellite, the Moon.

Contact information And ETC.

Name: Carter Dobbs - Email: CarterDobbs@g.hayscisd.net - Date:5/5/17

Sources used: www.google.com -https://en.wikipedia.org/wiki/History_of_Earth -http://www.nationalgeographic.com/science/earth/surface-of-the-earth/earths-interior/

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