The document discusses the four interconnected spheres that make up Earth's systems - the geosphere (solid Earth), hydrosphere (water), atmosphere (air), and biosphere (living things). It notes that the Earth is a complex system of interacting rock, water, air and life and provides an example of how a sewage overflow during a storm can impact all four spheres through their interactions.

1. Earth’s Spheres

2. The Earth’s Spheres
 When you think of Earth science, what comes to
mind?
 In what ways have you learned about or
experienced any part of the Earth in the past?
 Think of the last time you were outside in the
natural world. What things did you notice?

3. The Earth is a complex
system of interacting
rock, water, air and life

4. GEOSPHERE

5. HYDROSPHERE

6. ATMOSPHERE

7. BIOSPHERE

8. Earth’s Interconnected Spheres
Biosphere
Geosphere Hydrosphere
Atmosphere

9. APPLY

10. Typical Combined Sewer System

11. System Interactions
Biosphere
Geosphere Hydrosphere
Atmosphere
EVENT:
Sewage
Overflow
During Storm