Moon Origins
This ancient planet-sized object collided with Earth, leading to the Moon's formation
What is Theia?
The Moon takes this many days to complete one orbit around Earth
What is 27.3 days
During this phase, the Moon appears completely dark from Earth
What is the new moon?
Tides are highest when the Moon and Sun are in this alignment
During this type of eclipse, Earth's shadow falls on a full moon
What is a Lunar Eclips?
The Moon formed approximately this many billion years ago
What is 4.5 billion years?
This term describes the Moon's furthest point from Earth in its orbit
What is apogee?
"Light on Right" indicates this type of phase
What is waxing?
These occur when the Moon is at right angles to the Sun-Earth line
What are neap tides?
This theory suggests the Moon formed from debris after a massive collision
What is the Giant Impact Theory?
This type of rotation means the same side always faces Earth
What is synchronous rotation?
A complete cycle of lunar phases takes this many days
What is 29.5 days?
Each day, most coastal areas experience this many high tides
What is 2?
Unlike most satellites, the Moon contains this percentage of Earth's mass: 1.2%
True
This term describes the moon's closest orbit location
Perogee
This phase occurs when the Moon is exactly half illuminated and growing fuller
What is first quarter?
The Moon's gravitational pull creates this many tidal bulges on Earth
What is 2?