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Effects of soil creep on the earth surface include;It can push fence posts and telegraph poles from their original positions so they appear inclinedStone walls built across the slope can be destroyed by the creeping soilSoil creep results in the accumulation of soil particles at the base of the slopeSoil creep can also interfere with infrastructure such as road and railwaysWhen fine soil particles move downhill the upper slope are left bare and exposed
Causes of earth movement are;Magma movement within the crustal rocksConvectional currents within the mantleGravitational pressure/forceIsostatic adjustment
Proofs for the shape of the earth include;Satellite photographs taken from very high altitudes show that the earth has a spherical shape.Visibility of a ship approaching a shore from a distance its appearance is gradual, smoke is seen first gradually until the entire ship is seen.During the eclipse of the moon, a shadow of the earth which is circular appears on the moon only spherical bodies have round/circular shadows.The earth rotates from east to west and the sun appears earlier in the east compared to the west; otherwise if the earth was round, it;s entire surface would receive the sun at the same time.Circumnavigation - it is possible to fly, sail around the earth in the same direction and come back to the same starting point.The distant horizon of the earth viewed from a higher point appears curved and only spherical bodies have curved horizons.When viewed through a telescope, all the other planets, the sun and moon are spherical; the earth being one of the planets is also therefore spherical.
Characteristics of the earth include;Support lifeTakes 365 1/4 days to make a complete revolutionHas one satelliteTakes 24 hours to rotate
Characteristics of the outer core in the interior structure of the earth are;Composed of molten rock materialsMade up of iron and nickelEstimated to be about 2100 to 2900km thickHas temperature tanging from 3700 to 50000cHas an average density of 10.0gm/cc to 12.3gm/cc