Geo🌿

• coastal management strategies

  1. sea walls - these are large walls built at the foor of a cliff or ontop of the beach to prevent erosion ... often curved to reflect waves away
• coastal management strategies

  2. rock armours /riprap

  • these are boulders or big rocks that are piled on the beach,or infront of a cliff or a seawall to reduce erosion
  • they do this by soaking up the waves energy as they hit the coastline
• coastal management strategies

  3. Reefs

  • an artificial reef racks is built out at sea so that the waves break early,away from the beach
• coastal management strategies

  4. Revetments

  • these are slanted structures made from wood,concreted or rocks designe
• coastal management strategies

  5. Groynes

  • barriors of wood or stone built on the beach to stop sand being carried away
• coastal management strategies

  6. beach nourishment

  • this is the process were by sediments or fills are placed on a beach using heavy machinery
• Protecting places from sea

  we can protect places by:

  1. keeping the sea away
  2. reducing the energy of the waves as they hit the coastline
• Coastal defenses

  • are barriers that are used to protect the coast from erosion or flooding
• Flood defenses refers to structures built to prevent flooding;an embarkment
• Coastal management challenges

  • Lack of funds
  • these coastal defenses can be costly to install and require heavy machinery
• Coastal management challenges

  • Regular maintainance
  • most break down eventually or washed away
• Deforestation is the purposeful clearing of forested land. 
• Causes of deforestation

  • for more land and space
  • firewood
  • to provide items such as wood for construction
  • to provide paper and money
  • construction of buildings
• Effects of deforestation

  • Climate change
  • depletion or extinction of renewable resources
  • soil erosion
  • flooding
  • loss of habitat
  • extinction of wildlife
• Global warming

  • This is the rise in the average temparatures around the world
• why do temperatures change?

  • the greenhouse gases
  • change in the earths tilt andpath around the sun
  • changes in the amount of energy emitted by the sun
• Greenhouse gas

  • this is a gas that absorbs and emits radiation energy within the thermal infrared range,causing the greenhouse effect
  • eg. carbon dioxide
  • methane
  • water vapour