A
Sliver of a circle:
Crescent
Growing:
Waxing
Shrinking:
Waning
Larger than half but less than a whole circle
Gibbous
1
Waning Crescent
Earth's Moon is the _________ largest moon in the Solar System.
5th
A _____________ is when a second full moon phase occurs in one month.
Blue Moon
Planets and moons orbit in what shape?
Ellipses
6
Last Quarter
2
Waxing Gibbous
Scientists believe that the Moon formed approximately ________ years ago.
4.5 billion
A sidereal month is:
27.3 days; The time it takes for the Moon to make a full orbit around Earth and return to its starting location.
How often do Supermoons occur?
Once a year
7
Waxing Crescent
3
New Moon
Our Moon is about _______ (fraction) the size of Earth?
1/4
A synodic month is:
29.5 days; The time from one New Moon to the next New Moon.
The opposite of a Supermoon is a
Micromoon
8
Waning Gibbous
4
First Quarter
Describe a Young and an Old Moon.
Young Moon - Just starting Waxing Crescent from New Moon
Old Moon - Just finishing Waning Crescent to New Moon
A Hunter's Moon would happen in
October.
Why are synodic and sidereal months different lengths?
Since the Earth is moving through space as well, the Moon has to travel a slightly longer distance to get back into the New Moon phase.
Name 2 words in common usage derived from the word "Moon."
Month, Monday
5
Full Moon