Calendars
How many days are in a year?
365 1/4
What does the Earth do on it's axis?
rotate
in addition to rotating, earth travels around the
sun
What is the spinning of the Earth on its axis called?
Rotation
How long does it take Earth to rotate once?
24 hours
Where was the first calendar made?
Ancient Egypt
What is the imaginary line that passes through the Earth's center?
axis
one revolution of earth around the sun is called a
year
The Earth's path around the sun is called its what?
Orbit
People of many cultures have divided time based on the motions of what two things?
Earth and the Moon
How do people decide how to split months?
The Mooon Cycle
As the Earth rotates eastward, the sun appears to move ...
west
What is the motion of one object as it travels around another object?
Revolution
What is a system of organizing time that defines the beginning, length, and divisions of a year?
Calendar
What are two major ways Earth moves in space?
rotation & revolution
How many days did Gregory XIII drop in 1582
10 days
What does Earth's rotation cause?
Day and night
Earth's path, or orbit, is a slightly elongated circle called an
ellipse
What is the motion of one object as it travels around another object?
Revolution
The ancient Egyptians created one of the first...
calendars
How many days were left at the end of the year in a Roman calendar?
5 days
When the sun is facing away from the Earth, it is ...
night
Earth's orbit brings the planet closest to the sun in which month?
January
What is the imaginary line that passes through Earth's center and the North and South poles?
Earth's axis
Which group revised the Egyptian calendar?
The Romans