Rotation And Revolution Flashcards
Earth Rotates in which direction
West To East
Rotation takes place on
Earth’s axis
Rotation causes
Shape of earth
Day n night
Coriollis force
Shape of earth is ___ due to ___
Geoidal
Rotation
Shape of earth is __ at Equator and __ at poles
Buldged out at EQ
Flat at poles ( that’s y dist between 2 latitude is more at poles )
What causes geoidal shape
Centripetal force at Equator
Gravitational force at poles
Different relations between Equator n poles
Equitorial radius > polar radius
Equitorial circumference> polar circumference
Equitorial distance>polar radius
Rotation speed more at
Equitorial speed>polar speed of rotation
Revolution(+tiltness) causes
Seasons
Titlness of earth on its own Axis
23.5
Tiltness of earth on wrt orbit
66.5
Max orbital speed
Min orbital speed
Mercury
Neptune
Perihelion
3 Rd Jan ( earth near sun )
Aphelion
4 th July ( earth away from sun )
Summer solstice date
21 June
Summer solstice features
Day is more ( lengthy)
Sun at Northern hemis
Continuous heat at North pole for 6 months
Vertical sun rays at Tropic of Cancer (23.5N)
Winter solstice date
22 dec
Winter solstice features
Vertical sun rays on tropic of Capricorn
Continuous heat in south pole for 6 months
Southern hemis get more heat
In winters solstice in northern hemisphere days are __ n nights are __
Short,long
Autumn equinox
23 Sept
Verbal or spring equinox
21 March
At equinox what happens
Equal day n night
Sun directly at Equator