y8 finals geography

• definition of life expectancy is the average age in an area that people that are expected to live up to
• literacy rate definition is the percentage of people in an area above the age of 15 that can read and write
• birth rate = number of babies born per year x 1000
• primary employment is the percentage of people who work extracting raw materials from the ground
• population density is the number of people living in a certain area
• biome: a large ecosystem with a similar climate and vegetation e.g. desert or tundra
• an advantage of melting ice is that more natural resources will be dicovered as the arctic is believed to have 13% of undiscovered oil
• an advantage of melting ice is that shipping routes would be 40% quicker than normal and packages will be delivered at a faster rates
• a disadvantage of melting ice is that it will contribute to global warming causing sea levels to rise
• a disadvantage of melting ice is habitats will be lost which could result to extinction of certain animals
• the arctic is a northern hemisphere
• The Arctic is located on 3 continents. Asia, north America and Europe
• in the centre of the Arctic Circle, you can find the Arctic Ocean and the north pole
• Longshore Drift


  Movement of sediment along a beach in a direction parallel to the shoreline
• What causes Longshore Drift?

  Waves approaching the beach at an angle and the resulting longshore current
• What is the result of erosion due to Longshore Drift?

  Loss of land and potentially exposing underlying rocks or infrastructure
• 4 Ways Sediment is Transported

  Suspension, solution, Traction, and Saltation
• What is Suspension?


  Carrying sediment as suspended load in the water column
• Traction Transport

  Moving larger particles, like cobbles and boulders, through direct contact with the bed
• What type of particles are involved in Traction Transport?

  Larger particles, such as cobbles and boulders