Vocab
Rocks composed of small rock fragments, glass, and soil that have been compacted into cohesive rocks
What are breccias?
This natural satellite moves in a continuous elliptical orbit around a planet and is held captive by the planet's gravity force
What is a moon?
This means center-seeking
What is centripetal?
In 1961, this president set the national goal of a manned moon exploration
Who was John F Kennedy?
The time from one full moon to the next (approx. 29.5 days)
What is the synodic phase?
The shape of lunar rocks
What are angular?
What are impact craters?
These are caused mainly by the pull of the moon's gravity and a smaller amount of the sun's gravity
What are the earth's tides?
For this reason, impact craters on the moon look different than those on Earth
What are forces like erosion of wind, water and tectonic processes?
The "rocking" slightly back and forth of the moon in orbit
What is libration?
These two things are missing but necessary for the existence of life on the moon
What are carbon and free oxygen?
These previous theories were used to explain what created lunar craters
What are volcanic activity, giant gas bubbles, and collapsed sinkholes?
These types of universal laws refer to orderliness and being constant
What are physical laws?
Some felt frozen water might have accumulated here deep within craters that are not reached by sunlight
What is the South Pole of the moon?
The moon's rotation time with respect to the stars (approx. 27.5 days)
What is the sidereal period?
The size of the moon
What is 1/4 the size of earth, 2,160 miles in diameter, or 81 times smaller than earth?
This indicates that there was rapid cooling of the moon's surface at some point
What are crystalline rocks?
These are a result of our partial view of the sunlit portion of the moon
What are moon phases?
This extreme method was used by NASA to try and find water molecules on the moon
What is crashing two probes into the lunar surface?
Tides are highest during the full moon and new moon phases when there is a lineup between the sun, earth, and moon and the gravity of both objects then contribute to the tidal pull on the earth
What are spring tides?
These three Hebrew words are used in the Old Testament to refer to the moon
What are hodesh, ya-reah, and labana?
This occurs with the earth is lined up exactly between the sun and the moon
What is a lunar eclipse?
This is where Neil Armstrong took his first steps on the Moon on July 20, 1969
What is the Sea of Tranquility?