motions of the solar system. earth’s motions earth has three motions 1. daily 2. yearly 3. cyclic
DESCRIPTION
Earth’s Motions Rotation Causes Day and Night Two types of Day Sidereal Sidereal Time it takes for the Earth to make one Complete rotation Time it takes for the Earth to make one Complete rotation 23 hrs and 56 minutes23 hrs and 56 minutes Solar Solar Time it takes to go from one Noon to the NextTime it takes to go from one Noon to the Next 24 hours24 hours Earth has a tilt of 23.5 Degrees One cause of the seasons One cause of the seasonsTRANSCRIPT
Motions of the Solar Motions of the Solar SystemSystem
Earth’s MotionsEarth’s Motions
Earth has Three MotionsEarth has Three Motions1.1. DailyDaily2.2. YearlyYearly3.3. Cyclic Cyclic
Earth’s MotionsEarth’s MotionsRotationRotation Causes Day and NightCauses Day and Night Two types of DayTwo types of Day
SiderealSidereal• Time it takes for the Earth to make one Complete rotationTime it takes for the Earth to make one Complete rotation• 23 hrs and 56 minutes23 hrs and 56 minutes
SolarSolar• Time it takes to go from one Noon to the NextTime it takes to go from one Noon to the Next• 24 hours24 hours
Earth has a tilt of 23.5 DegreesEarth has a tilt of 23.5 Degrees One cause of the seasonsOne cause of the seasons
How Fast are We Moving?How Fast are We Moving?
Earth’s MotionsEarth’s MotionsRevolutionRevolution Earth’s Yearly Journey around the SunEarth’s Yearly Journey around the Sun 365 days 365 days One Cause of the SeasonsOne Cause of the Seasons
Changes the Amount of solar radiation reaching Changes the Amount of solar radiation reaching the earththe earth
AphelionAphelion Furthest point away from the sunFurthest point away from the sun
PerihelionPerihelion Closest point to the sunClosest point to the sun
Annual Motion of the EarthAnnual Motion of the Earth
Earth’s Annual Motion around the Sun is Earth’s Annual Motion around the Sun is an ellipsean ellipse
EllipseEllipse An Elongated Closed CircleAn Elongated Closed Circle Sun is not at CenterSun is not at Center
Earth’s MotionsEarth’s Motions
PrecessionPrecession
The Cause of the SeasonsThe Cause of the Seasons
Sun Position Relative to EarthSun Position Relative to Earth
EventEvent Degrees in Degrees in LatitudeLatitude DateDate SeasonSeason
Vernal EquinoxVernal Equinox 0 or Equator0 or Equator March 21March 21stst SpringSpring
Summer SolsticeSummer Solstice 23.523.500 N or N orTropic of CancerTropic of Cancer June 21June 21stst SummerSummer
Autumnal Autumnal EquinoxEquinox 0 or Equator0 or Equator September 21September 21stst FallFall
Winter SolsticeWinter Solstice 23.523.500 S or Tropic S or Tropic of Capricorn of Capricorn December 21December 21stst WinterWinter
No Tilt, No SeasonsNo Tilt, No Seasons
Height of Sun in SkyHeight of Sun in Sky
Angle of InsolationAngle of Insolation
Angle of InsolationAngle of Insolation
Length of Day and LatitudeLength of Day and Latitude
Latitude and Amt. of Solar Latitude and Amt. of Solar RadiationRadiation