Astronomy 1
One of the 24 standard zones into which Earth is divided, corresponding to the 24 hours in a day
What is time zone?
The length of time it takes for a planet to rotate once on its axis
What is a day?
The act of turning or spinning on an axis
What is rotation?
Imaginary line that runs from a planet's north pole to its south pole on which the planet rotates
What is axis?
The path of an object as it revolves around another object in space
What is orbit?
When the Sun's rays directly strike the equator and both hemispheres have 12 hours of daylight and 12 hours of darkness
What is equinoxes?
In the United States there are 4
What is time zones?
Two times of year when the Sun's direct rays strike Earth the farthest north or south of the equator
What is solstices?
The length of time it takes for a planet to make one complete revolution around the Sun
What is year?
The act of moving in a curved path or orbit around another object
What is revolution?
The periodic changes in climate caused by the change in solar energy due to the axial tilt of the Earth as it orbits around the Sun
What is seasons?
The angle at which a planet's axis tilts
What is axile tilt?
When the Earth is closest to the sun
What is winter or January?
December 21st or 22nd
June 20th or 21st
What is the summer solstice?
When the Earth is farthest from the sun
What is summer or July?
The sun's rays are directly on the equator during these times.
What is the Vernal and Autumnal Equinox?
What is rotate in different directions and different speeds around the sun?
As Earth travels around the sun the axial tilt of 23.5 degrees is _____________________.
What is the same?
The earth receives more daylight hours, and the sunlight is concentrated in a smaller area during this time of year.
What is the summer?