1. Drill
Below is a “slick” sports car. Why do you think it is designed to look this way? How does this idea relate to the laws of thermodynamics?

2. Essential Question
How do energy conversions relate to the 1st and 2nd laws of thermodynamics?

3. Agenda Set-up Primary Productivity Lab
Complete energy lab with your group
Finish Lab if you did not in class
Lab Report due Wednesday 9/21

4. Primary Productivity Lab
Pick group of 3, go to a lab station.
Once there, one person should grab all materials
Fill pot with soil – dampen soil first
Weigh out 1.6 grams of fescue grass seed
Plant your seed on top of dampened soil
Water lightly, then place a damp paper towel over top.
Get a piece of tape, and write your names on the tape – attach to pot.

5. First Law of Thermodynamics –
In all physical and chemical changes, energy is neither created nor destroyed, but may be converted from one form to another.
Example:
Second Law of Thermodynamics –
When energy is changed from one form to another, some of the useful energy is always degraded to low quality, more dispersed, less useful energy
This is the first thing to understand about the 2nd Law. Energy always and inevitably flows from higher concentrations to lower concentrations. The next thing to understand is that every time energy changes or moves, some of it, or all of it, becomes less useful. That is the unchangeable result of becoming less concentrated. 

7. Links to environmental science
high-waste or high-throughput societies - attempt to sustain ever-increasing economic growth by increasing throughput of matter and energy resources in the economic system; will eventually become unsustainable
matter recycling society - allow economic growth to continues without depleting matter resources or producing excess pollution and environmental degradation; will but some time
low-waste society - recycling and reusing discarded matter, preventing pollution, conserving matter and energy resources; reducing