1. Greenhouses and Materials Bridging Art and Science Please pick up your houses and have it ready on your desk!

2. What we will talk about: Part 1: What are materials? Part 2: How does a greenhouse work?  Does the type of material I use to cover a greenhouse matter? Part 3: How is Earth like a greenhouse?  What is the Greenhouse Effect?  What is Global Warming?

3. What are Materials?

4. Why study materials? July 24, 2007 Models & Materials everyone makes material choices! aluminum glass plastic

5. Kinds of Materials Models & Materials Metals good conductors of electricity and heat shiny appearance susceptible to corrosion strong, but deformable Glasses insulators resistant to high temperatures and harsh environments hard, but brittle Plastics very large molecules low density, low weight maybe extremely flexible

6. Materials Basics How is glass made? http://www.youtube.com/watch?v=v5PlOkH9v-k How is paper made? http://www.youtube.com/watch?v=7SdJtYkAzTw&feature=related

7. Crystalline Structure of glass

8. Transmission of Light through glass http://earthguide.ucsd.edu/virtualmuseum/images/refractlightglassacr.html

9. Printer Paper

10. Kleenex Tissue Do you think light can pass through Kleenex?

11. Aluminum Foil

12. Discuss with a neighbor… Do you think the kind of material you use to cover your greenhouse will affect the temperature inside of it?

13. Design Process 2-D design 3-D design Build the model Test the variables (ex. CO 2 )Make modifications

15. Greenhouse Temperature Experiment Hypothesis ( Which do you think will have the highest and lowest temperatures? WHY? ):  We think that will create the highest temperature and will create the lowest temperature in the greenhouse because. Copy the chart below Material used for building Starting Temperature ( °F) Final Temperature ( °F) Foil Plastic Wrap Paper

16. Greenhouse Effect Atmosphere = layer of gases that keeps the Earth warm