General Knowledge For FPSC, PPSC, NTS, CSS And Various Exams Geography Exercise 04 (Geography of Earth)

General Knowledge For FPSC, PPSC, NTS, CSS 

And Various Exams  Geography Exercise 04

(Geography of Earth)

• Equator is called the great circle
• Mean radius of earth is 6400 km
• Total world surface area is 510 million sq: km
• Soil formed by deposition of silt is Alluvial soil
• Winds blow from areas of high pressure to low pressure.
• Movement of tectonic plates may cause eruption of a volcano
• What creates new islands in the ocean? Volcanoes
• Soil best suited for deep rooted crops is Black soil
• Latitude of south pole is 90 deg:, latitude of equator is 0 deg:
• Humidity in air is maximum in Monsoon
• Earth revolves in its orbit 1 deg: per day
• 1 deg: longitude on equator is equal to 112 km
• Doldrums is a belt of low atmospheric pressure on either side of Equator.
• Removal of rock layer by layer due to weathering is called Exfoliation
• Rocks formed by the solidification of lava are Basalts
• Tundra region gets no rainfall throughout the year
• At equator an object weights the least.
• At 7050 km per hour, Sun rotate on its axis.
• The northern polar lights are called Aurorae Borealis, and southern polar lights are called Aurorae Australis.
• The pulsating universe theory explains the evolution of universe.
• 230 million years ago there was only one huge continent on earth. This super continent is known as Panagea, which means all lands
• In 1912 Alfred Wegener said that continents drift around on earth’s surface
• Continental drift means plate tectonics
• Rain forests grow near the equator.
• In autumn deciduous forests glow with brilliant red and gold colors as the leaves dry up and fall off the trees.
• The shape of the earth is an oblate spheroid.
• Arctic is the worlds northmost region.
• The largest latitude circle on earth is Equator.
• 230 million years ago, there was only one huge continent on Earth. This super continent is known as panagea, which means all lands.
• In 1912, a German Scientist called Alfred Wegener (1880-1930 suggested that the continent drift around on Earth’s surface.
• The latitude of a point on the Earth’s surface is the angular distance of that point measured at the centre of the Earth
• Mass of earth is 6 X 10²¹ tons
• Density of earth is 5.52.
• Chemically earth id made up of Oxygen 46.6%, Silicon 27.7%,
• Aluminum 8.1%, iron 5%, Calcium 3.6%
• Earth is divided into four zones.
• Torrid zone lies b/w Tropics of Cancer & Capricorn.
• Torrid zone lies between the Tropics and is bisected by the Equator
• The North Temperate Zone lies b/w Tropic of Cancer & the Arctic Circle.
• The South Temperate Zone lies b/w Capricorn & Antarctic Circle.
• The area around north and south poles within the polar circles is called ‘the frigid zone’.