Questions on the moon?
Info below retrieved from Wikipedia moon equatorial diameter = 3,476 km earth equatorial diameter = 12,756 km Then, the size of the moon compared to earth = 0.27 The inclination of the Moon's orbit makes it implausible that the Moon formed along with the Earth or was captured later; its origin is the subject of some scientific debate.The current theory on the moon's origin is that a very large object hit the earth some 4,527 ± 10 million years ago, causing a large amount of dust to orbit the earth. Eventually the dust accumulated to form the moon. The moon has many minerals which are similar to earth, and the moon lacks an molten iron core. The gravity on the moon is very small, about 0.1654 that of earth. This would account for the lack of atmosphere. The earth receives about 1,370 watts per square meter of solar energy, of which only about 1,000 watts per square meter reach the surface due to the adsorbtion of heat by the atmosphere. Since the moon has no atmosphere, the temperatures on the moon swing higher/lower than the temperatures on the earth. The min, mean and max temperatures on the surface of the moon (in Kelvin) are 40 K, 250 K, and 396 K respectively. The min, mean and max temperatures on the surface of earth are 185 K (-88 °C), 287 K (14 °C), and 331 K (58 °C) max respectively. The apparent lack of craters on the earth is due to "plate tectonics", or the movement of the surfaces of the earth. Many craters were swallowed up when, say, the India plate moved underneath the plate which contains the Himalaya mountains. Hope this helps!