Its composition is not well defined, but is probably metallic iron alloyed with a small amount of sulfur and nickel; analyses of the Moon's time-variable rotation suggest that it is at least partly molten. Volcanic features Lunar nearside with major maria and craters labeled The dark and relatively featureless lunar plains, clearly seen with the naked eye, are called maria Latin for "seas"; singular mareas they were once believed to be filled with water;  they are now known to be vast solidified pools of ancient basaltic lava. Although similar to terrestrial basalts, lunar basalts have more iron and no minerals altered by water.
Many different tidal levels are in use throughout the world, some being more appropriate for diurnal or mixed tides, and some more relevant for semi-diurnal tides. Tidal Levels are frequently used as vertical datums by hydrographers and surveyors in cartography, in establishing legal boundaries and territorial rights, and in planning flood defences.
Note that througout this article, the tide is the "Astronomical Tide" - which is that part of the tide caused by the Moon and the Sun. The other part of the tide is caused by the weather e.
In most places the astronomical tide dominates. Because of this meteorological variation, HAT is not the highest possible tide and LAT is not the lowest possible tide.
Tidal Levels are often defined as being an average over a time period of one metonic cycle of 19 years or over a lunar nodal cycle of The arithmetic mean of mean higher high water and mean lower low water.
The arithmetic mean of mean high water and mean low water. The average observed height of the surface of the sea relative to a stated vertical datum. Indian Spring Low Water. GeoTide and Tidal Levels In determining tidal levels, GeoTide can improve upon the accuracy which would be obtained by a simple examination of past tidal records because i the harmonic analysis process automatically disregards the meteorological and other noise in the tide and ii its analysis can extend over the required Of course this does not obviate the need for as much accurate historical data as possible.
In order to gain a meaningful accuracy for these figures at least one month of very high quality data is required and preferably more. GeoTide Analyzer determines the following tidal levels.
Historical Tidal Levels The definition of tidal levels has changed considerable over the past years. The tables below show some historic tidal levels and their dates of usage.This page is a collection of links for children, teachers, and parents.
Science topics are based on the curriculum for Kindergarten through grade five, although many pages will be of interest to older students. Lunar Manipulation Lunar Master (Valkyrie Crusade) has absolute control over the moon and all its aspects, such as lunar cycles, lunar phases and is even the actual source of the moon's light.
Phases, Eclipses, and Tides. OVERVIEW When people look up at the moon, they often see what looks like a face. Some people call this “the man in the moon.” Of course, the moon really has n face.
What people are seeing is a pattern of light-colored and dark-colored areas on the moon’s surface that just happens to look like a face. Tidal cycles are affected by lunar day, semidiurnal and diurnal, lunar nodes, axial tilt earth, gravity, orbital inclination moon and the ecliptic plane of the earth - sun: tidal heights spring and neap tides.
About the partial Solar Eclipse in Leo on August 11th, Last solar eclipse in the Leo-August eclipse set; second to the last eclipse in the set (the next and final eclipse in this Leo-Aquarius set will be a lunar eclipse in Leo in January )..
A Solar Eclipse occurs on August 11th at AM EDT at 18 degrees and 42 minutes of the sign of Leo.
The Moon is tidally locked to the Earth, which means that it always shows one face to our planet. In fact, this is the case for most the large moons in the Solar System.