the spinning of a celestial body, such as a planet, around an axis

angular distance north and south of the equator

the circular path of an object as it revolves around another object

the orbiting of an object around another object

The regular rise and fall of the level of water in the ocean

an event in which a planet’s poles are most extremely inclined toward or away from the star it orbits.

an event in which a planet’s subsolar point passes through its Equator.

each of the four divisions of the year (spring, summer, autumn, and winter) marked by particular weather patterns and daylight hours, resulting from the earth's tilt on it's axis.

a regular oval shape

an imaginary line drawn around the Earth equally distant from both poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0°

- a force that attracts any two objects with mass

when the moon passes between the Sun and Earth, casting a shadow on Earth that either fully or partially blocks the Sun's light in some areas

the shape of moon's sunlit portion as seen from Earth.

event that occurs when the moon moves into the Earth's shadow, causing the moon to be darkened.