Lunar Cycle and Ocean Tides


Moon Phases:

Ocean Tides


Waxing:  the moon at anytime after the new moon and before the full moon (illuminated area is increasing)

Waning: the moon after the new moon and before the full moon (its illuminated area is decreasing)

Gibbous: illuminated part of the moon greater than a semicircle and less than a circle

Crescent: the curved sickle shape of the waxing or waning moon


Waxing Moon:  a crescent on the right side of the moon

Waning Moon: a crescent on the left side of the moon

Lunar Cycle:

Definition:  a cycle of 235 synodic months,about 19 years, after which the new moon occurs on the same day of the year as at the beginning of the cycle with perhaps a shift of one day, depending on the number of leap years in the cycle.

Earth's Season/Eclipses

3.) Nicolai Copernicus said that the Sun was the center of the solar system, not the Earth.

4.)      We have seasons because the Earth rotates on its axis that's tilted on its orbit.That 23.5 degree tilt cause the different hemispheres to be at different angles towards the sun at different times of the year.

5.) The angles during winter, the energy from the sun must travel through more atmosphere to reach the pole and the sun's energy has to cover more ground.

6.)  To have a lunar eclipse, the moon, sun and earth have to be aliened.The moon's orbit around the Earth is slightly inclined, that's why lunar eclipses don't occur every month.

8.) We have day and night because the Earth slowly rotates on its axis, which makes the sun hit the earth at different times.


10.) The seasons are marked by solstices and equinoxes astronomical terms that relate to Earth’s tilt.

Equinox- The vernal equinox and autumnal equinox mark the beginning of spring and fall. At these times of the year, the sun appears to be directly over Earth’s equator, and the lengths of the day and the night are equal over most of the planet.

Solstice- The solstices mark the points at which the poles are tilted at their maximum toward or away from the sun.