GEO12 – 2.1

January 25

Troubleshoot/discuss Assignments 4,5,6

Chapter 10 – HYDROSPHERE & HYDROLOGIC CYCLE

• Closed “Cascading” System (Fig.10.2 – p.197)
  • matter (water) changes state due to inputs/outputs of energy (the sun)
  • actual water is neither added nor taken from the system
• Hydrologic Cycle “Storehouses” and “Storage Time”
  • the places in the hydrologic cycle that water spends time in
  • the average time water spends in each of the places
  • Q: Where (in which storehouse) does water spend the least amount of “storage time”?
  • Q: Where (in which storehouse) does water spend the most amount of “storage time”?
• Storehouse:  The Oceans & Salinity
  • Abyssal Plain
  • Salinity
    • Q:What factors might affect the salinity of a particular sea?
  • Thermocline
    • “barrier” creates two distinct zones of temperature + salinity
  •  Ocean Currents
    • Video “How Do Ocean Currents Work?”
• Freshwater Storehouses
  • Glaciers & Ice Sheets
    • Earth has 2 Major Ice Sheets
      • Q: Name the two major ice sheets and their location
    • Warming Seas & Melting Ice Sheets – NASA Global Climate Change (see MOODLE)
  • Groundwater
    • water table:  level beneath surface of the earth where the ground is saturated with water
      • levels vary depending on climate, physical characteristics of the land
        • artesian wells vs non-artesian wells/springs
    • aquifers
    • permeable vs. impermeable rock
      • Q: explain how permeable and impermeable rock play a part in groundwater reserves
  • Rivers & Lakes
    • represent less than 1% of Earth’s fresh water
    • the St. Lawrence & the Mackenzie represent two of Canada’s greatest rivers that discharge into the oceans
    • importance of the Great Lakes
    • Q: What river on Earth is the greatest discharger of water into the oceans?
    • Q: Which lake on Earth holds the greatest amount of water?
    • Q: What is the Earth’s deepest lake?
    • Q: What is the largest lake on Earth in terms of surface area?
  • Atmosphere
    • Evaporation
      • rate is affected by variables that include wind, surface characteristics, air turbulence, and air temperature
    • Absolute Humidity (volume) vs Relative Humidity (ratio)
    • Dew Point (Condensation Point)
      • the temperature at which air is saturated (cannot hold any more water)
    • Condensation
      • dew, fog
      • Q: Explain the process of glasses fogging up immediately when a person goes inside from the cold.
      • hygroscopic particles attract water vapour
    • Precipitation
      • rain, snow, sleet, hail

SUSTAINABILITY

Ecological Footprint – complete as homework for tomorrow’s class

*Note upcoming due dates:

• January 29 –  Digital Portfolio entries on 2020 pandemic changes (Understanding the World through a New Lens)
• January 18 (week of) – Digital Portfolio – Blue Gold KWL
• January 25 (week of) – Assignment 5 Parts 1 & 2
• January 25 (week of) – ASSIGNMENT 4
• January 25 (week of) –  Assignment 6 
• January 29 – FINAL DIGITAL PORTFOLIOS 
• ONLINE Marks close February 1
• February 1 – Self Assessment