Waves, sometimes earthquakes.
No, the position of the Moon and the Sun as OBSERVED from the Earth.
gravitational pull
The position of the moon because of its gravitational pull.
The moon has many different phases that it goes through multiple times throughout the year. The two factors that cause these phases are its position in relation to the Earth's shadow. The second one is the position of the sun in relation to the moon.
The moon has gravity just like the earth and this gravity from the moon pulls the sea around as it changes its relative position to us.
No planet blocks the light from the moon. The moon's phases are caused by the position of the moon relative to Earth and the Sun. At times, the Earth's shadow can cause a lunar eclipse, but this is not a planet blocking the moon's light.
The moon needs to be in line with the sun, creating a syzygy, for a spring tide to occur. A syzygy happens during a full moon and new moon when the gravitational forces of the sun and moon combine to produce higher high tides and lower low tides.
The position of the sun and moon cause shadowing effects. These shadowing effects are the phases of the moon. A moon can be partially shadowed as in the crescent to a new moon, which is dark.
The orientation of the crescent Moon depends on the time, the position of the observer (that's you), the declination of the Sun (how far north or south of the equator) and the declination of the Moon. If the crescent Moon were a bow, the arrow would be pointed toward the Sun.
On Earth, someone would most likely see less then half of a moon.
a full moon.
the moon in on the horizon =)