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Artificial causes of earth movements include;Explosion especially in quarrying sitesMovement by heavy machines such a railwaysReserviours especially in water dammed areas.
Types of boundaries created as a result of earth movement are;Extension boundaries is the type of boundary created when plates move away from one another.Compression boundary is the type boundary created at the zone of convergence plate more towards one another.Conservative boundary is the type of boundary created when plates move past each other along the transform fault.
Difference between Orogenic And Epeirogenic earth movement is;Orogenic are horizontal/internal earth movements while Epeirogenic are vertical earth movements.
Possible causes of long sightedness are;Focal length being too longEye ball being too short
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.