Rotation And Revolution Flashcards

1
Q

Earth Rotates in which direction

A

West To East

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2
Q

Rotation takes place on

A

Earth’s axis

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3
Q

Rotation causes

A

Shape of earth
Day n night
Coriollis force

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4
Q

Shape of earth is ___ due to ___

A

Geoidal
Rotation

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5
Q

Shape of earth is __ at Equator and __ at poles

A

Buldged out at EQ
Flat at poles ( that’s y dist between 2 latitude is more at poles )

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6
Q

What causes geoidal shape

A

Centripetal force at Equator
Gravitational force at poles

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7
Q

Different relations between Equator n poles

A

Equitorial radius > polar radius
Equitorial circumference> polar circumference
Equitorial distance>polar radius

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8
Q

Rotation speed more at

A

Equitorial speed>polar speed of rotation

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9
Q

Revolution(+tiltness) causes

A

Seasons

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10
Q

Titlness of earth on its own Axis

A

23.5

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11
Q

Tiltness of earth on wrt orbit

A

66.5

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12
Q

Max orbital speed
Min orbital speed

A

Mercury
Neptune

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13
Q

Perihelion

A

3 Rd Jan ( earth near sun )

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14
Q

Aphelion

A

4 th July ( earth away from sun )

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15
Q

Summer solstice date

A

21 June

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16
Q

Summer solstice features

A

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)

17
Q

Winter solstice date

A

22 dec

18
Q

Winter solstice features

A

Vertical sun rays on tropic of Capricorn
Continuous heat in south pole for 6 months
Southern hemis get more heat

19
Q

In winters solstice in northern hemisphere days are __ n nights are __

A

Short,long

20
Q

Autumn equinox

A

23 Sept

21
Q

Verbal or spring equinox

A

21 March

22
Q

At equinox what happens

A

Equal day n night
Sun directly at Equator