Moon Facts
What is the moon's age?
4.5 billion years OR roughly the same age as Earth
True or False: The seasons are caused by the distance between the Sun & Earth.
False
Define Revolution
When an object orbits another
Phase that is "invisible"
New Moon
This gets blocked out during a solar eclipse
Sun
Reason why craters exist on the moon's surface.
Meteorite impacts OR The moon has NO atmosphere
Main 2 causes for the seasons.
Earth's tilt & it's position in it's revolution around the Sun.
Define Rotation
When an object spins about its axis
Term used when the moon is "growing".
Waxing
A dark shadow produced during an eclipse.
Umbra
The moon's gravitation pull is what fraction of Earth's gravitational pull?
1/6th
When daytime & nighttime are the same length.
Equinoxes
Causes Day & Night
Rotation
Number of days in a Moon Phase Cycle
29.5
What causes a lunar eclipse?
Moon passing through Earth's umbra
Year humans first landed on the moon.
1969
The longest & shortest days of the year.
Solstices
Moon Phases are caused by this.
Moon's Revolution around Earth
Phases when a tiny sliver is visible on the left side of the moon.
Waning Crescent
What do those standing in the penumbra experience?
Partial Eclipse
Dark, flat lava fields found on the lunar surface.
Maria
When is the vernal equinox in the Southern Hemisphere?
September 21st
Earth days required for the moon to make one rotation.
27.3 days
Moon Phase 2 weeks after a Last Quarter Moon
1st Quarter
Why don't eclipses occur every month?
Moon's orbit is tilted 5-6 degrees