1. Unit 2: System Earth
E2.1 The Earth is a system consisting of four major interacting components: geosphere (crust, mantle, core); hydrosphere (water); atmosphere (air); and biosphere (living things).
E2.1B Analyze the interactions between the major systems that make up the Earth.
E2.1C Explain, using scientific examples, how a change in one system affects other Earth systems.
E2.3A - Explain how carbon exists in different forms such as limestone (rock), carbon dioxide (gas), carbonic acid (water), and animals (life within Earth systems) and how those forms can be beneficial or harmful to humans.

2. Earth as a System A system refers to any group of interacting parts.
Examples: schools, bodies, stereos, computers, and EARTH

3. Earth as a System
Earth is a system made up of 4 primary parts: Geosphere (land); Hydrosphere (water); Atmosphere (air); and Biosphere (life).

4. Earth As a System
Geosphere is the solid Earth that includes the continental and oceanic crust, the mantle, and the core.

5. Earth as a System
Atmosphere is the blanket of gases surrounding Earth. The primary gases are nitrogen, oxygen, carbon dioxide, and water vapor.
The atmosphere provides oxygen and CO2 for living things, protects us from harmful radiation, and helps control Earth’s temperature.

6. Earth as a System Hydrosphere includes all the water on the planet.
The water is in constant motion through the water cycle.

7. Earth as a System
Biosphere refers to all living organisms and their habitats.

8. Earth as a System
The parts of Earth’s system interact in many ways, all of which involve either matter, energy, or both. These interactions are responsible for everything we see here on the planet.

9. Earth as a System
This diagram shows one of the Earth’s most basic cycles: The Carbon Cycle.
Carbon is stored in vegetation (plants), soil, water, the atmosphere and fossil fuels.
Carbon is changed into another form by processes like photosynthesis, respiration, burning fossil fuels, etc.