General Knowledge For FPSC, PPSC, NTS, CSS And Various Exams Geography Exercise 03 (Geography of Earth)

General Knowledge For FPSC, PPSC, NTS, CSS 

And Various Exams  Geography Exercise 03

(Geography of Earth)

• Longitude is measured from East to West
• Latitude is measured from North to South of Equator.
• New Zealand is close to Int: Date Line.
• Arabia is the larges peninsula.
• Antarctica is in South Pole.
• The largest latitude circle on earth is the Equator.
• Equinox (equal nights) means the equal duration of day & night.
• Lines drawn parallel to equator is latitude
• 1 hour difference in local time between two places is 15 deg: Longitude 23 degree longitude is Tropic of Cancer
• 70% of earth’s surface is covered with water
• Isobar is the lines joining places of equal air pressure on a map
• Isohyets are lines joining places of equal rainfall over a period
• Isotherm are Lines of equal temperature
• Contours are places with equal altitude
• There are 36 tectonic plates
• Crust of earth is 0.5%
• Upper part of earth on which earth floats is Asthensosphere
• Earth’s speed is greatest when it is closest to the sun
• Spring tide occurs when earth, moon and sun are in straight line
• Isthmus is a narrow land strip separating two seas and connecting two land marks
• Day and night are equal on 21st March (at all parallel of latitude) and 23rd September
• Core of earth is metallic
• Temperature at earth’s core is 2000 deg: C
• Tide at its maximum height is spring tide
• International dateline lies along 180 deg: meridian
• Speed of earth rotation is highest at the north pole
• Minimum land area recommended for forest is 25%
• Earth’s total surface covered by forests is 15%
• Ordovician are the oldest rock
• Earthquake is a post volcanic activity
• Of total water on earth, fresh water reserves are 2.7%
• Highest grade of coal is Anthracite
• Coal mainly suitable for thermal power production is Bituminous
• First stage of coal formation is Peat.