The study of moon, stars, and other objects in space.
Imaginary line that passes through center of Earth.
Earth spinning on its axis.
The movement of the Earth around the Sun.
The Earth's path as it travels around the Sun.
June 21st is summer solstice, the longest day of year, December 21st is winter solstice, the shortest day of year.
Equal amounts of day and night. When sun's rays point at the equator. Occurs in Spring March 21st, & Fall Sept. 21st.
March 21st Spring Equinox.
Sept. 21st Fall Equinox.
The tilt of Earth on axis.
Amount of time it takes Earth to rotate around once on its axis.
The point on Earth which is facing Sun.
The point on Earth which is facing away from Sun.
365 and 1/4 day
The amount of time it takes the Earth to orbit the Sun.
Result from Earth's tilt on its axis and its orbit around Sun.
Seasons are a result of....
The amount of sunlight the region receives.
Tilt towards the Sun.
Tilt away from Sun.
Shortest day of year
Winter Solstice-Dec. 21st. First day of winter.
Longest day of year
Summer Solstice-June 21st. First day of summer.
Sept. 21st Equal amounts of day & night. First day of fall.
March 21st. Equal amounts of day & night. First day of spring.
a slant, or a lean to one side