1. Earth as a System Please take out ISN Turn to pg.12 Science Warm UP
Tuesday – Sept. 11th
Earth as a System
Please take out ISN
Turn to pg.12
Science Warm UP
Tues. 9/11
Describe a situation in which two or more of Earth’s spheres are interacting.

2. ISN 17 – Earth as a System
What is a system? A system is any size group of interacting parts forming a whole. Most natural systems are driven by sources of energy that move matter/ or energy from one place to another.

3. Two Types of Systems
Open System – energy and matter move in and out of the system
Ex: weather system, river system
Closed System – energy moves in and out of the system, but matter cannot enter or leave.
Cooling system

4. Earth’s Energy Sources
Earth has two energy sources
Sun
Drives external processes
Ex: Weather and climate, ocean circulation, erosional processes
Earth’s Interior
Continuously generated by decay of radioactive elements
Powers internal processes that produce volcanoes, earthquakes, and mountains

5. ISN 16 Volcanic Connections
Working with a partner (or self) Brainstorm how a volcanic eruption can cause changes to the other spheres. How is it a system? (biosphere, hydrosphere, atmosphere) Draw a picture or create a concept map of your ideas. Include labels for drawings to show connections. Answer question. Don’t forget color!