EARTH AS A SYSTEM

Chapter 1

Past Perceptions Meet New Issues pg 4-5

Past Perceptions (paragraph

1):***don’t write about CFCs

New View (paragraph 3):

A New View of EarthPast Perceptions Meet New Issues

Past Perceptions: scientists studied Earth as a collection of parts

New View: Earth is more than a collection of parts---various parts are connected (Earth as a whole)

The Rise of Earth System Science pg 5

What is a model?

What does it do?

The Rise of Earth System Science

What is a model? A representation of an object, a process, or a phenomenon

What does it do? It may show physical features or show how something works

Examples of Models

Model house---lacking water, electricity, smaller

Globe/map---smaller, not always to scaleCarbon cycle*****

What Is a System? Pg 5/6

What is a system?Fill out the Venn Diagram:

CLOSED SYSTEM OPEN SYSTEM

What is entering and leaving?

ENERGY—sunlight, heatMATTER---anything physical, made of atoms

What Is a System?

What is a system? A kind of model, part of the universe that can be studied separately

CLOSED SYSTEM OPEN SYSTEM

Energy Can enterOr leave

Matter CANNOTEnter or Leave

Matter CANEnter or Leave

A Planetary System pg 6/7

Overall, Earth is a ___system because______.

A consequence of Earth being a _______system is that________

Pair Share: Decide if the following are open or closed systems

Is energy entering and/or leaving?Is matter entering and/or leaving?

Pair Share: Decide if the following are open or closed systems

Is energy entering and/or leaving?Is matter entering and/or leaving?

Pair Share: Decide if the following are open or closed systems

Is energy entering and/or leaving?Is matter entering and/or leaving?

Pair Share: Decide if the following are open or closed systems

Is energy entering and/or leaving?Is matter entering and/or leaving?

WhiteboardDraw a model---decide if it is open or closed

You can draw an object, a process, a phenomenon (situation)

THINK:Is energy entering/leaving?Is matter entering/leaving?Individually decide:1. Open or Closed?2. Why?

Earth as a Closed System

Explain the significance of Earth as an essentially closed system.

HINT: natural resources, waste…

Earth System’s Four Spheres pg 8-10

Atmosphere Geosphere

Hydrosphere Biosphere

Interactions among the Spheres pg 10

Read

Pick one example: draw scenario and label the 4 spheres.

How interactions Change the spheres pg 11

What factors have caused spheres to change? List the factor(s) of which sphere and the sphere that changed.

FACTOR/part of which sphere? SPHERE THAT CHANGED

Cold temp/atmosphere biosphere (plants died)

Classzone.com---Sphere Interactions

ES0103#1-6