The layer of rock and mineral fragments that nearly everywhere covers Earth's surface
Dark, flat areas on the moon's surface formed from huge ancient lava flows.
Tall mountain ranges and appear as light areas on the moon
The belief that the Earth collided with a very large planet-sized asteroid & a part was ejected which is now our moon.
Moon or Lunar Phases
The appearance of the moon, as viewed from Earth, at different points along its orbit.
The phase of the moon where it's not seen. The moon is between the earth & the sun.
The phase of the moon when the full side facing us is illuminated. The moon is opposite the sun, with the earth in between them.
First Quarter Moon
The phase of the moon when it is halfway between the new & full moon phases. The moon is illuminated on the RIGHT side.
Third Quarter Moon
The phase of the moon when it is halfway between the full & new moon phases. The moon is illuminated on the LEFT side.
The lit part of the moon is increasing & on the RIGHT side. This phase occurs after the new moon & before the full moon.
The lit part of the moon is decreasing & on the LEFT side. This phase occurs after the full moon but before the new moon.
The phase of the moon that only the curved edge of the moon's side can be seen.
The natural satellite of the Earth
The movement of an object around another object
The act of rotating as if on an axis
The point or time at which the sun is farthest from the equator
The two days of the year on which neither hemisphere is tilted toward or away from the sun, equal hours of daylight & darkness
Partial shadow (in an eclipse)
A region of complete shadow resulting from total obstruction of light