Phases of the Moon

| The Shang developed the cycle of the moon, their calendar lasted for 366 days, and they have many records about solar eclipse, lunar eclipse and nova. The

Currently, the concept of a year is based on the earth's motion around the sun. The time from one fixed point, such as a solstice or equinox, to the next is called a tropical year; its length is currently 365.242. Our concept of a month is based on the moon's motion around the earth, although this connection has been broken in the calendar commonly used now, the Gregorian calendar. The time for the moon to complete a full cycle of phases is called a synodic month, and its length is currently 29.53 days. Note that these numbers are averages. The actual length of a

The moon is by far the biggest and most easily recognizable object in earth’s atmosphere that can be perceived by the naked eye on a cloudless night. It is hypothesized that it came into existence nearly 4.5 billion years ago, from residual debris after a planetary body collided with earth. Although, considered the runner-up to the sun as the second brightest object in the sky, its illumination is deceitful, insomuch as the moon is not a source of light, but instead reflects the sun’s illumination from the half of the moon that is in direct alignment with the sun at that time. More readily identified as a satellite of the earth rather than as a planet itself or even a star, it has a diameter a quarter of the size of earth’s size and it

the moon 's orbit around the Earth, and the planets ' motions around the Sun. The

The Earth revolves around the sun due to the gravitational force between them, so the Earth is pulled by the gravitation between it and the Sun. The Sun moves in an orbit as well due to the same gravitational force between it and the planet, which is the same as in real life. Also, the Moon revolves around the Earth like the moon revolves around the planet. It can be observed that the moon moves faster when the planet (Earth) is closer to the sun. This can be confirmed using Kepler’s Second Law (Equal Areas) because it states that the speed of the planet constantly changes and becomes faster when it is closer to the sun because it is in an elliptical

In the diagram below the sun's light is coming in from the right. The moon's location is marked at several points on its orbit. These are the points the moon was at when the sketches above were drawn. Identify each position with the letter of the corresponding sketch.

between light and shadow) from the north pole to the south pole of the moon. This is how the moon would be seen if it were on the observer’s meridian. We can use the drawing above to determine the amount of illumination and whether it is on the left or right hand side of the moon. Use the drawing above to draw the appearance of the moon in the box below.

Lunar phase (or Moon phase) refers to the appearance of the illuminated portion of the Moon as seen by an observer, usually on Earth. The lunar phases vary cyclically as the Moon orbits the Earth, according to the changing relative positions of the Earth, Moon, and Sun. One half of the lunar

17. The moon changes its phase because it orbits the earth, and half the moon always faces the sun, the other half is always dark, we just see the combination of the two.

Asking the class as a whole. Can we see the moon during the daytime? Does the moon appear in the sky during daytime?

right hand side of the moon. Use the drawing above to draw the appearance of the moon

| 2. If there is a full moon visible from Paris one evening, twelve hours later in Australia there will be a _________ visible. Answer

From memory, draw the positions of the Earth-Moon-Sun system during a complete monthly tidal cycle. Indicate the tide conditions experienced on Earth, the phases of the Moon, the time between those phases, and syzygy and quadrature.

The moon, similar to other stars, is in a perpetual motion. “The cycle of the phases and the Moon’s changing position against the stars are caused by the Moon’s orbital motion around the Earth.” (Thomas. Page 27) The Position of the Moon toward the Sun and the Earth determine its phases. In addition, when the Moon and the Earth are in the same line with the Sun, Eclipses can occur. During this Lab activity, I try to understand the phases of the Moon and Eclipses by studding the moon phase diagram and by simulating the Moon’s motions. The result of this simulation are presented in the next part of this document.

I) According to my previous observation with the full moon, this observation was less lit up than before. There was a small sliver of darkness that appeared now on the right side of the moon from where I was standing.