Earth

by elcracken
Last updated 6 years ago

Discipline:
Science
Subject:
Planets & Astronomy
Grade:
5

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Earth

source list-http://space-facts.com/earth/-http://en.wikipedia.org/wiki/Earth

Characteristic

EARTH

Info

Earth is the third planet from the Sun and is the largest of the terrestrial planets. Unlike the other planets in the solar system that are named after classic deities the Earth’s name comes from the Anglo-Saxon word erda which means ground or soil. The Earth was formed approximately 4.54 billion years ago and is the only known planet to support life.

Habitability

A planet that can sustain life is termed habitable, even if life did not originate there. The Earth provides liquid water—an environment where complex organic molecules can assemble and interact, and sufficient energy to sustain metabolism. The distance of the Earth from the Sun, as well as its orbital eccentricity, rate of rotation, axial tilt, geological history, sustaining atmosphere and protective magnetic field all contribute to the current climatic conditions at the surface.

Moon

The Moon is a relatively large, terrestrial, planet-like satellite, with a diameter about one-quarter of the Earth's. It is the largest moon in the Solar System relative to the size of its planet, although Charon is larger relative to the dwarf planet Pluto. The natural satellites orbiting other planets are called "moons" after Earth's Moon.

Mass - 5,972,190,000,000,000 billion kgEquatorial Diameter - 12,756 kmPolar Diameter - 12,714 kmEquatorial Circumference - 40,030 kmOrbit Distance - 149,598,262 km (1 AU)Orbit Period - 365.26 Earth daysSurface Temperature - -88 to 58°C


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