axeo-tem3

toc = Big Bad Glass =

[[image:http://t0.gstatic.com/images?q=tbn:ANd9GcT-rLYyNGwtaB5gCWMsLg0oo2pS9aHDVO91lK8g41klQ8zWQ-0wLA width="139" height="136"]]
http://t0.gstatic.com/images?q=tbn:ANd9GcT-rLYyNGwtaB5gCWMsLg0oo2pS9aHDVO91lK8g41klQ8zWQ-0wLA

http://t2.gstatic.com/images?q=tbn:ANd9GcQmC1a8J5Qc5JWma5lTBUVxaMUWGF0UtBiQKcDJ2GQwCbD_Ndvr

Specific Question
Does Plexiglass hold more mass than glass?

Dependent Variable:
Weight (pounds)

http://t0.gstatic.com/images?q=tbn:ANd9GcScFDuQj9c7kx67YFtRXyixQY8isTE9XbSmYjBinSq9JnBOLAE8

[[image:graph_of_hypothesis6868686868886.JPG]]
Same kind of surface. Same thickness.

General Plan

 Experimental Design I will either conduct my experiment outside or in mt garage. There will only be one person in my experiment and that person will be me. I will do every thing in my experiment. I will be doing five trials for each type of glass. That should give me enough data for my experiment. I will print off a spread sheet for me to. When I'm done i will put the data on the computer. I will write many observations during my experiment. I will take pictures of my experiment.

MATERIALS List

1. Glass 2. Plexi glass 3. Copy of spread sheet 4. Weights 5. Scale 6. Pen/Pencil

Detailed Procedure:

1.Get all the materials 2.Put Glass on two boxes so there is a space in between the glass and the box. 3. Start to put weights in the middle of the glass. 4. Keep on adding weights until glass breaks. 5. When the glass breaks, get the scale and weigh the weights to see how much mass the glass can hold. 6. Record how much mass the glass held onto the spreadsheet. <span style="background-color: #e17a7a; color: #000000; font-family: Arial; font-size: 17px; text-decoration: none; vertical-align: baseline;">7.Do this procedure Four more times with glass. <span style="background-color: #e17a7a; color: #000000; font-family: Arial; font-size: 17px; text-decoration: none; vertical-align: baseline;">8. Switch to plexiglass and do the same procedure five times.

Background Research
<span style="background-color: transparent; color: #000000; font-family: Times New Roman; font-size: 16px; text-decoration: none; vertical-align: baseline;"> Poly methyl methacrylate is what Plexiglass is made out of. It is a clear plastic that is used for shatterproof replacement for glass. PMMA can go up to 13 inches thick and still be easy to see through. <span style="background-color: transparent; color: #000000; font-family: Times New Roman; font-size: 16px; text-decoration: none; vertical-align: baseline;"> Most glass is a mixture of a large amount of silica that comes from fine white sand or pulverized sandstone, combined with smaller amounts of an alkali like soda or potash to lower its melting point, and lime (from limestone) to help stabilize the mixture and ultimately make the glass stronger and water-resistant. <span style="background-color: transparent; color: #000000; font-family: Times New Roman; font-size: 16px; text-decoration: none; vertical-align: baseline;"> Force is when an object is moving at a speed and it another object. <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">Poly(methyl methacrylate) (PMMA) is a shatter resistant glass.

__Data Table:__
media type="custom" key="12298132"

Conclusion
The original purpose of this experiment was to find out whether Plexiglas or regular glass would hold more weight.

The results of this experiment were that plexiglass held more weight the regular glass. As i put more weight on the the plexiglass, the glass would flex a little and then eventually it would break. When i was putting weight on the glass it would just stay the same until there was to much weight on it then it shattered.

<span style="background-color: #ffffff; color: #000000; font-family: Arial; font-size: 19px; text-decoration: none; vertical-align: baseline;">My hypothesis was that plexiglass would hold more weight. My results do support my hypothesis. There is a relationship between the independent and dependent variables. <span style="background-color: #ffffff; color: #000000; font-family: Arial; font-size: 19px; text-decoration: none; vertical-align: baseline;">I think that there are trends in my data because plaxiglass held more weight. I think That my experiment went by smoothly with minor problems. Some of the pieces of glass were different sizes. They were two different in size but it could have been enough to change my data. If I could improve my experiment I would get all the pieces of glass were the same size so my data would be more accurate. An interesting future study might involve using bigger pieces of glass and a lot more weight.