Because the moon is in orbit around the earth and the sun is shining on a certain point of the moon. We can see the changes from our perspective. This is similar to a shadow. Sometimes we can only see a sliver of the moon because the sun is almost directly facing the moon and we can't see that side.
Quick answer: Over the course of a lunar cycle, you are observing the lunar day (exactly equal to the length of a lunar cycle of phases) unfolding on the moon's surface. [Some wrongly believe that the changing appearance of the moon has something to do with the earth's shadow on the moon; it does not. The earth's shadow is involved only during a lunar eclipse.]
NoNo
The lunar cycle is caused by the revolution of the Moon about the Earth.
full moon
The last three days of a lunar cycle are often referred to as the waning crescent phase. During this phase, the illuminated portion of the Moon visible from Earth decreases each day until it is no longer visible, marking the end of the lunar cycle.
The moon moves eastward during its lunar cycle due to its orbit around the Earth. This eastward movement is responsible for the changing phases of the moon as viewed from Earth.
Quick answer: Over the course of a lunar cycle, you are observing the lunar day (exactly equal to the length of a lunar cycle of phases) unfolding on the moon's surface. [Some wrongly believe that the changing appearance of the moon has something to do with the earth's shadow on the moon; it does not. The earth's shadow is involved only during a lunar eclipse.]
That is the lunar cycle, or the phases.
That is the lunar cycle, or the phases.
NoNo
The sun lights a different portion of the moon's face during the lunar cycle.
The appearance of the moon changes throughout the lunar cycle due to its position relative to the Earth and the Sun. As the moon orbits the Earth, different portions of its surface are illuminated by sunlight, creating the various phases such as new moon, crescent, first quarter, gibbous, and full moon. This continuous movement results in the changing shapes we observe from Earth over approximately 29.5 days.
iiWHAT IT MEANS!! A lunar week is when the whole week has every single phase of the moon.If there is lunar phases every single day of the year then there is a lunar year.If there is only for a month then it is called a lunar month.A lunar cycle are called to the phases of the moon.
The changing appearance of the Moon as seen from Earth is called the lunar phases. This phenomenon occurs due to the Moon's orbit around Earth, which causes different portions of its illuminated side to be visible from our planet. The main phases include the New Moon, First Quarter, Full Moon, and Last Quarter. These phases cycle approximately every 29.5 days.
The lunar cycle is caused by the revolution of the Moon about the Earth.
full moon
The last three days of a lunar cycle are often referred to as the waning crescent phase. During this phase, the illuminated portion of the Moon visible from Earth decreases each day until it is no longer visible, marking the end of the lunar cycle.