Red
One full moon to another is about __ days
29
Earth completing 1 orbit around the sun = ?
1 year
The imaginary line that passes through Earth’s center and the North and South poles
axis
The spinning of Earth on its axis
rotation
Seasons are _______ in the Northern and Southern hemispheres
reversed
The movement of one object around another
revolution
The time it takes for one rotation of the Earth
24 hours
A system of organizing time that defines the beginning, length, and divisions of a year
calendar
Earth turning once on its axis = ?
1 day
Earth moves in space in two major ways:
rotation and revolution
Cultures divided time based on the motions of _______ and _______.
Earth, moon
Earth’s path, or orbit, is an elongated circle called:
ellipse
Borrowed the Egyptian calendar
Determined Earth’s orbit actually takes 365 ¼ days
Romans
Adjusting the calendar by adding 1 day every 4 years is known as ______ ______ when February is given 29 days instead of 28.
Leap Year
Determined the Roman calendar was off by a little more than 11 minutes each year and dropped 10 days from the calendar in 1585
Pope Gregory XIII
A year is divided into months based on...
the moon's cycle