Greenhouses and Materials

Bridging Art and Science

Please pick up your houses and have it ready on your

desk!

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?

What are Materials?

Why study materials?

July 24, 2007Models & Materials

everyone makes material choices!

aluminum glass plastic

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

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

Crystalline Structure of glass

Transmission of Light through glass

http://earthguide.ucsd.edu/virtualmuseum/images/refractlightglassacr.html

Printer Paper

Kleenex Tissue

Do you think light can pass through Kleenex?

Aluminum Foil

Discuss with a neighbor…

Do you think the kind of material you use to cover

your greenhouse will affect the temperature

inside of it?

Design Process

2-D design 3-D design

Build the model

Test the variables (ex. CO2) Make modifications

Greenhouse Temperature ExperimentHypothesis (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 belowMaterial

used for building

Starting Temperature (°F)

Final Temperature (°F)

FoilPlastic WrapPaper

Greenhouse Effect

Atmosphere = layer of gases that keeps the Earth warm