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EARTH’S MOON

EARTH’S MOON. By: Brenda Bimantoro. What is Earth Moon??.

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EARTH’S MOON

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  1. EARTH’S MOON By: Brenda Bimantoro

  2. What is Earth Moon?? .. • The celestial object which revolves round the earth; the satellite of the earth; a secondary planet, whose light, borrowed from the sun, is reflected to the earth, and serves to dispel the darkness of night. The diameter of the moon is 2,160 miles, its mean distance from the earth is 240,000 miles, and its mass is one eightieth that of the earth. See Lunar month, under Month.

  3. Properties Earth Moon Diameter: 3,476 km Size: (the picture) Mass: 7.349 x 1022 kg Color: The color of the Earth Moons is grey to white Moon are made from many rocks and it was combine into one so they have an magnet to get the rock.

  4. Distance … Earth: The Moon takes about 27 days (27 days, 7 hours, 43 minutes, 11.6 seconds) to go all the way around the Earth and return to its starting position. The Moon is about 250,000 miles (384,400 kilometers) from Earth. The moon orbits Earth at an average speed of 2,288 miles per hour (3,683 kilometers per hour). The Moon travels at different speeds during different parts of its orbit. It moves slowest when it is at furthest distance from Earth. The Moon moves fastest in its orbit when it is closest to Earth. Sun: The Moon, on average, is about 150 million kilometers away from the Sun. That's actually an interesting coincidence, since the Earth orbits about 150 million kilometers away from the Sun. What? Well, the Moon orbits the Earth, so it's following the Earth around in its orbit around the Sun. Now, we can actually get a little more precise here. The Earth actually takes an elliptical path around the Sun. It ranges in distance from 147 million km to 152 million km. So the Moon can actually range in this distance as well. But wait, we can get even more precise. The Moon takes an elliptical orbit around the Earth. Sometimes it gets as close as 363,000 km, and other times it gets as far as 406,000 km. So the closest point that the Moon can get to the Sun is when the Earth is at its closest point in orbit, and the Moon is most distant from the Earth. The closest point that the Moon can actually get to the Sun is 146,692,378 km

  5. Life cycle of the Earth Moon

  6. Lunar month • A lunar month is the time the moon takes to pass through a complete cycle of its phases and is measured from New Moon to New Moon. A lunar month is about 29.5 days (29 days, 12 hours, 43 minutes, 11.6 seconds) • Whilst the Moon is orbiting the Earth, the Earth is constantly moving because it is orbiting the sun. The Moon therefore travels slightly more than 360° to get from one new moon to the next. Thus the lunar month is longer.

  7. How old isthe Moon ..?? • The Moon is 4.5 billion years old

  8. History of Moon • Nobody knows exactly how the moon formed, but this is one possibility: after the planet Earth formed (along with the other planets), about four and a billion years ago, during the Hadean Eon, there were still a lot of leftover bits of rock going around the Sun that were not part of any plane. One especially big chunk of rock smashed into the Earth

  9. Temperature • The temperature on the moon varies from -387 Fahrenheit (-233 Celsius), at night, to 253 Fahrenheit (123 Celsius) during the day. • Because the moon has no atmosphere to block some of the sun's rays or to help trap heat at night, its temperature varies greatly between day and night.

  10. Motion • The Moon moves in a counterclockwise direction with an average orbital speed of about 0.6 miles/sec or 2,160 m.p.h. • Because the lunar orbit is elliptical, the distance between the Earth and the Moon varies between about 227,000 miles (365,000 km) at perigee, and about 254,000 miles (409,000 km) at apogee, when the Moon is farthest from the Earth. The average distance is about 240,000 miles (385,000 km), or about 60 times the radius of the Earth itself.

  11. Mass / Weight • The mass of the Moon is about 7.35 x 1022kg, or about 1/81 of the Earth's mass. • The weight of the moon varies in different situations.

  12. Connection to the Earth • There was no consensus about the origin of the Moon. • There were three principal theories: co-accretion which asserted that the Moon and the Earth formed at the same time from the Solar Nebula; fission which asserted that the Moon split off of the Earth; and capture which held that the Moon formed elsewhere and was subsequently captured by the Earth. • None of these work very well. But the new and detailed information from the Moon rocks led to the impact theory: that the Earth collided with a very large object (as big as Mars or more) and that the Moon formed from the ejected material. • There are still details to be worked out, but the impact theory is now widely accepted.

  13. Conditions • The moon's diameter is about 2,160 mi (3,476 km), somewhat more than 1/4 the earth's diameter. The moon has about 1/81 the mass of the earth and is 3/5 as dense. • The surface of the Moon is rocky and covered with craters. Mountains and hills surround the edges of large, flat plains. The lunar mountain ranges, with heights up to 25,000 ft (7,800 m), are comparable to the highest mountains on earth but in general are not very steep.

  14. Conditions • There is no air on the Moon, but it has recently been announced that water is definitely present - according to NASA between 10 and 300 million tons of water-ice is scattered inside the craters of the lunar poles. • There are dark areas on the Moon. These are really dry land but long ago astronomers thought they were filled with water, so they called them seas.

  15. Time Length • The Moon is a 4.6 billion year old ball of rock that circles around Earth once every 27 days, 7 hours and 43 minutes.

  16. Bibliography • http://wiki.answers.com/Q/What_is_the_distance_from_the_moon_to_the_sun • http://www.lunarlandowner.com/moon_data.htm • http://www.universetoday.com/20050/10-interesting-facts-about-the-moon/ • http://answers.yahoo.com/question/index?qid=20100914035436AAKhhrE • http://nineplanets.org/luna.html • http://solarsystem.nasa.gov/planets/profile.cfm?Display=Facts&Object=Moon • http://www.woodlands-junior.kent.sch.uk/time/moon/facts.htm • http://coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/moontemp.shtml

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