Earth's+moon



**Definition**: The earth’s satellite (the moon)

 The moon has many interesting surface features. The moon has craters, mountain ranges, rilles, and lava plains. The moon's interior is more difficult to study.

The moon's top layer is a rocky solid. Beneath this layer is a partially molten zone. Lunar geologists think the moon may have a small iron core, even though has no magnetic field. Unlike other planets, the moon has no atmosphere so it can’t trap heat.This being the case, the temperatures on the moon are extreme. They range from 100° C at noon to -173° C at night.

(source: [|windows on the universe])



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 * The moon is terrestrial.
 * The moon has a rocky surface
 * Humans have visited the moon
 * Has craters,mountain ranges,riles,and lava pains
 * Interior is more difficult to study.
 * The moon is Earth's satellite
 * The moon has a small iron core.
 * Really cold and can't hold heat
 * We also know that the moon has lava plains
 * The moon causes the tides.
 * Many craters are on the moon.
 * Life is not on the moon
 * Temperatures are extreme
 * Top layer is a rocky

<span style="color: rgb(0, 43, 255)"> Q:Why are the temperatures so variable? A:The moon has no atmosphere, so there is no greenhouse effect trapping heat and keeping the moon warm at night.

Q:Has anyone been to it? A: 12 Astronauts have walked on the moon.

Q:What is a rille? A: A ditch on the surface of the Moon where molten lava flowed in the past. <span style="color: rgb(0, 43, 255)"> Q:Why are there light and dark places on the moon? A: The moon has two kinds of surface - highlands and maria. The highlands are light in color and very old. There are a lot of craters in the highlands regions. The maria are very dark in color and younger. They most likely formed when lava filled in a large crater and then hardened. They have few craters. <span style="color: rgb(0, 43, 255)"> Q:Why don’t people float away when they visit the moon? A:Because there is a gravitational pull.

Q:Does the moon move at the same speed as earth? A: It rotates while it orbits the earth. In the 27.32 days it takes for the moon to go around the earth, it also spins on its axis for one full rotation. This is why we always see the same face of the moon.

Q:What gives it light at night? A: A reflection from the sun

Q:What’s the distance from earth? A:The closest it gets to the earth is about 221,463 miles. The farthest that it usually get is 238,857 miles.

Q:How does it affect tides on earth? A: The gravitational pull of the moon tugs on the surface of the ocean until its surface mounds up and outward in the direction of the moon. When the mound of water has reached its highest point it is called high tide. On the opposite side of the earth from the moon, the centrifugal force caused by the earth's rotation produces another mound of water and high tide. Between these two high tides are two flat areas on the surface of the ocean which are the low tides. Q:How many times have we been there? A:6 missions flew to the moon

Q:Is it possible for life to live on it? A:For short periods, yes. In order to live there for long periods would require precautions that astronauts do not have.

Q: What would a scale model of the earth and moon look like? A : __Earth-Moon Data__ Earth-Moon Distance 384,000 km Diameter of the Earth 12,756 km Diameter of the Moon 3476 km Typical Space Shuttle Orbit 400 km above Earth's surface Geosynchronous Satellite Orbit 33,000 km (from center) Size of the Space Shuttle 50 meters Size of Satellite 6 meters

Q: What would you need to survive on the moon and why? A:We cannot survive on the moon there is more light than we need in many cases we can't survive on the moon

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