earth process

• geological process- natural process feature are modified
• exogenous process- (outside the surface)

  endogenous process- (within the interior of earth)
• type of exogenous process

  1. weathering
  2. erosion
  3. mass wasting
  4. sedimentation
• weathering- disintegration of rocks, soil with other material, happen without movement or transportation.
• physical weathering- breakdown of rocks by mechanical forces.
• • abrasion- by friction of water or wind
  • freezing and thawing
  • heating and cooling
  • plant growth
  • animal activity
• chemical weathering-rocks break down by chemical reactions
• • oxidation- reaction of a substance with oxygen
  • hydrolysis- chemical breakdown of substance when combined with water
  • acid rain- may cause metals and stones to corrode.
• acid precipitation- precipitation that contains acid due to air pollution
• erosion- movement of earth's solid materials from one place to another
• mass wasting- movement of large masses of materials down to slope
• • mud flow- soil=water, near rivers or streams
• • debris flow- does not need water to flow
• • slump -slow movement of soil along a curved surface
• sedimentation- accumulation of materials such as soil
• magmatism- happens when a magma generated and develops into igneous rocks
• volcanism- eruption of molten rocks from opening
• lava - magma reaches the surface