Brief Notes on Geography for Upcoming Exams SSC CGL,CHSL,SSC GD,RRB,UPSC,PSC & many more
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Today a short notes on World Geography have been given for the upcoming exams like SSC CGL,CHSL,RRB,UPSC,PSC and other central or state exams.Follow our notes and quiz on regular basis that will help you to enrich your Gk stock.The topic of the day is Various points on Indian Defence.So let's start-
● Also called 'Blue Planet'.It is the densest of all planets.
● Circumference : 40,232 km, Area : 510 million sq km.
● 2 types of movements :
◆ Rotation or daily movement
◆ Revolution or annual movement
Rotation
● Spins on its imaginary axis from west to east in 23 hrs,56 minutes and 40.91 seconds.
● Earth's rotation results in :
i) Causation of days and nights
ii) Change in the direction of wind and ocean currents
iii) rise and fall of tides everyday.
● The longest day in North Hemisphere is June 21,while shortest day is on 22 December.
● Days and nights are almost equal at the equator.
Revolution
● It is earth's motion in elliptical orbit around the sun.Earth's average orbital velocity is 29.79 km/s.
● Takes 365 days,5 hrs,48 minutes and 45.51 seconds.It results in one extra day every fourth year.
● Revolution of the earth results in (i) change of seasons (ii) variation in the lengths of days and nights at different times of the year (iii) shifting of wind belts (iv) determination of latitudes.
Equinoxes
● These are dates when days and nights are equak.During these days the sun shines directly over the equator.
● March 21 : Vernal equinox.
● September 23 : Autumnal equinox
Solstice
● The time of the year when the difference between the length of days and the length of nights is the largest.
● During these days the sun shines directly over the topics.
● June 21 : Summer Solstice
● December 22 : Winter Solstice
Latitude
● Imaginary lines drawn parallel to the equator.Measured as an angle whose apex is at the centre of the earth.
● The equator represents 0° latitude, while the North Pole is 90°N and the South Pole 90°S.
● 23 1/2° N represents Tropic of Cancer while 23 1/2° S represents Tropic of Capricorn.
Longitude
● It is the angular distance measured from the centre of the earth.On the globe the lines of longitude are drawn as a series of semicircles that extend from the North Pole to the South Pole through the equator.They are also called meridians.
● India,whose longitudinal extent is approx. 30°,has adopted only one time zone , selecting the 82.5°E for the standard time which is 5 hrs and 30 minutes ahead of GMT ( Greenwich Mean Time ).
International Date Line
● It is the 180° meridian running over the Pacific Ocean,deviating at Aleutian Islands,Fiji,Samoa and Gilbert Islands.
● Travellers crossing the Date line from west to east ( from Japan to USA ) repeat a day and travellers crossing it from east to west ( from USA to Japan ) lose a day.
Lunar Eclipse
● When earth comes between sun and moon.
● Occurs only on a full moon day.However,it does not occur on every full moon day.
Solar Eclipse
● When moon comes between sum and earth.
● Can be partial or total.
● Occurs only on a new moon day when the moon is in line with the sun.However,due to the inclination of the moon's orbit,a solar eclipse does not occur on every new moon day.
The Crust
● It is the outermost and the thinnest layer of the earth's surface about 8 to 40 km thick.
● The crust is made up of two layers-an upper lighter layer called the Sial (Silicate + Aluminium) and a lower density layer called Sima (Silicate + Magnesium).
The Mantle
● This layer extends up to a depth of 2900 kms.
● This line of separation between the mantle and the crust is known Mohoviricic Discontinuity.
The Core
● Beyond a depth of 2900 km lies the core of the earth.
● The line of separation between the mantle and the core is called Gutenberg-Wiechert Discontinuity.
Today a important note on Geography has been given.Hope You guys will like it and it will help you to score well in Gk sections
Thank you.
Hello Readers,welcome to Job Guide,A friendly website that you need most in competitive field.Job guide will guide through the path of your struggle to get a Govt. Job.
Today a short notes on World Geography have been given for the upcoming exams like SSC CGL,CHSL,RRB,UPSC,PSC and other central or state exams.Follow our notes and quiz on regular basis that will help you to enrich your Gk stock.The topic of the day is Various points on Indian Defence.So let's start-
The Earth
● Also called 'Blue Planet'.It is the densest of all planets.
● Circumference : 40,232 km, Area : 510 million sq km.
● 2 types of movements :
◆ Rotation or daily movement
◆ Revolution or annual movement
Rotation
● Spins on its imaginary axis from west to east in 23 hrs,56 minutes and 40.91 seconds.
● Earth's rotation results in :
i) Causation of days and nights
ii) Change in the direction of wind and ocean currents
iii) rise and fall of tides everyday.
● The longest day in North Hemisphere is June 21,while shortest day is on 22 December.
● Days and nights are almost equal at the equator.
Revolution
● It is earth's motion in elliptical orbit around the sun.Earth's average orbital velocity is 29.79 km/s.
● Takes 365 days,5 hrs,48 minutes and 45.51 seconds.It results in one extra day every fourth year.
● Revolution of the earth results in (i) change of seasons (ii) variation in the lengths of days and nights at different times of the year (iii) shifting of wind belts (iv) determination of latitudes.
Equinoxes
● These are dates when days and nights are equak.During these days the sun shines directly over the equator.
● March 21 : Vernal equinox.
● September 23 : Autumnal equinox
Solstice
● The time of the year when the difference between the length of days and the length of nights is the largest.
● During these days the sun shines directly over the topics.
● June 21 : Summer Solstice
● December 22 : Winter Solstice
Latitude
● Imaginary lines drawn parallel to the equator.Measured as an angle whose apex is at the centre of the earth.
● The equator represents 0° latitude, while the North Pole is 90°N and the South Pole 90°S.
● 23 1/2° N represents Tropic of Cancer while 23 1/2° S represents Tropic of Capricorn.
Longitude
● It is the angular distance measured from the centre of the earth.On the globe the lines of longitude are drawn as a series of semicircles that extend from the North Pole to the South Pole through the equator.They are also called meridians.
● India,whose longitudinal extent is approx. 30°,has adopted only one time zone , selecting the 82.5°E for the standard time which is 5 hrs and 30 minutes ahead of GMT ( Greenwich Mean Time ).
International Date Line
● It is the 180° meridian running over the Pacific Ocean,deviating at Aleutian Islands,Fiji,Samoa and Gilbert Islands.
● Travellers crossing the Date line from west to east ( from Japan to USA ) repeat a day and travellers crossing it from east to west ( from USA to Japan ) lose a day.
Eclipse
Lunar Eclipse
● When earth comes between sun and moon.
● Occurs only on a full moon day.However,it does not occur on every full moon day.
Solar Eclipse
● When moon comes between sum and earth.
● Can be partial or total.
● Occurs only on a new moon day when the moon is in line with the sun.However,due to the inclination of the moon's orbit,a solar eclipse does not occur on every new moon day.
Internal Structure of Earth
The Crust
● It is the outermost and the thinnest layer of the earth's surface about 8 to 40 km thick.
● The crust is made up of two layers-an upper lighter layer called the Sial (Silicate + Aluminium) and a lower density layer called Sima (Silicate + Magnesium).
The Mantle
● This layer extends up to a depth of 2900 kms.
● This line of separation between the mantle and the crust is known Mohoviricic Discontinuity.
The Core
● Beyond a depth of 2900 km lies the core of the earth.
● The line of separation between the mantle and the core is called Gutenberg-Wiechert Discontinuity.
Today a important note on Geography has been given.Hope You guys will like it and it will help you to score well in Gk sections
Thank you.
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