The Earth and the Moon are very different for many reasons, but they are also very similar in some ways. Earth is a planet that orbits a star, the sun. The Moon orbits the Earth and is not a planet. The Earth is a “living” and changing planet, while the Moon is “dead” and immobile. The Earth and the Moon have very different surfaces. The Earth's surface is constantly changing. Crustal movement, erosion by water and wind, and living organisms all contribute to these changes. Plate tectonics causes the Earth's crust to shift and create mountains and volcanoes. The movement of water can cause remodeling, just like wind when it picks up loose materials, they both sink into the Earth. Living organisms modify the surface a lot. They build, move and destroy things all the time. The surface of the Moon is practically still. It has no molten core, so there is very little tectonic activity. There is no wind and the small amount of water is buried in the polar areas. There are also no living organisms capable of modifying the surface. The only major factor in the Moon's change is the impact of meteoroids. They form craters when they hit the surface. Finally, the Earth's surface is very young, because it is constantly changing. The surface of the Moon is hundreds of millions or even billions of years old. The two atmospheres are also very different. The Moon is not considered to have an atmosphere. There is no wind, rain, snow, etc. Earth has a complex atmosphere. It consists of 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide and very small percentages of other elements. The atmosphere also contains water vapor. It is divided into layers: the troposphere, the stratosphere, the mesosphere, the ionosphere and the exosphere. Weather and clouds are in the troposphere. The orbital period and rotation period of O...... middle of paper ...... are 27.322 days, which is roughly the number of days there are in a month. Both the Moon and Earth have gravity. However, their severity is different. Earth's gravity is 9.78 m/s2. The gravity of the Moon is 1.622 m/s2. The Moon's gravity is 83.3% less than that of Earth. The Earth and the Moon are also similar. Both are made of rock. Both reflect sunlight. Both draw their energy from the sun. Even though the Moon orbits the Earth, it still orbits the Sun, just like the Earth. They also both tour. Finally, they are both heated by the sun.Works CitedDaunt, D.. Np. Internet. March 6, 2014... No. Internet. March 6, 2014..Cain, F.. Np. Internet. March 6 2014..