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23 terms

Seasons

STUDY
PLAY
Astronomy
The study of moon, stars, and other objects in space.
Axis
Imaginary line that passes through center of Earth.
Rotation
Earth spinning on its axis.
Revolution
The movement of the Earth around the Sun.
Orbit
The Earth's path as it travels around the Sun.
Solstice
June 21st is summer solstice, the longest day of year, December 21st is winter solstice, the shortest day of year.
Equinox
Equal amounts of day and night. When sun's rays point at the equator. Occurs in Spring March 21st, & Fall Sept. 21st.
Vernal Equinox
March 21st Spring Equinox.
Autumnal Equinox
Sept. 21st Fall Equinox.
23.5
The tilt of Earth on axis.
24 hours
Amount of time it takes Earth to rotate around once on its axis.
Daytime
The point on Earth which is facing Sun.
Nightime
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.
Seasons
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.
Summer
Tilt towards the Sun.
Winter
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.
Autumnal Equinox
Sept. 21st Equal amounts of day & night. First day of fall.
Spring Equinox
March 21st. Equal amounts of day & night. First day of spring.
tilt
a slant, or a lean to one side