1. What’s the humour?

2. Introduction to Earth Sciences: Earth’s Four Spheres
On your whiteboards use a drawing/illustration that indicates what you think the four spheres are.
HINT: the four spheres include all aspects of the earth as a planet.

4. The Four Spheres of the Earth

5. The four spheres: 1.) Atmosphere 2.) Geosphere (Lithosphere)
3.) Hydrosphere
4.) Biosphere

6. #1 Atmosphere Gaseous envelope surrounding the earth
Earth is only planet with free oxygen

7. Layers of the Atmosphere

8. #2 Lithosphere The earth and it’s physical features and landscapes
Includes the upper mantle and crust

9. #3 Hydrosphere All water at or near the surface of the earth
Water is constantly recycled (groundwater, glaciers, oceans, freshwater etc)

10. #4 Biosphere
All living things supported on earth

11. Event <=> Sphere
Causes & Effects
Interactions
Event <=>Sphere
Sphere<=>Sphere

12. How do processes affect our four spheres?
Example: Volcano
How does a volcano affect each sphere?
Event
Volcano
Atmosphere Geosphere Hydrosphere Biosphere

13. Group Activity
Each group will complete the following for your assigned event
Group 1 – hurricane
Group 2 – deforestation
Group 3 – large scale mining project (i.e. oilsands)
Group 4 – asteroid hitting earth
Group 5 – factories emitting Carbon Dioxide
Group 6 - land Slide
Group 7- Nuclear Waste Spill
Atmosphere Geosphere Hydrosphere Biosphere