Maddy M & Maddy J's Investigation by Madison Just https://padlet.com/madijust/qgzwbjn3yyzp Tensile Stretch and Puncture Resistance en-us 2016-03-21 14:41:36 UTC 2016-04-06 12:19:05 UTC hello@padlet.com Tensile Stretch Investigation madijust https://padlet.com/madijust/qgzwbjn3yyzp/wish/102123379 2016-03-22 00:09:10 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102123379 Punture Resistance Investigation madijust https://padlet.com/madijust/qgzwbjn3yyzp/wish/102124076 2016-03-22 00:20:11 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102124076 Materials: madijust https://padlet.com/madijust/qgzwbjn3yyzp/wish/102124094 - Timer
- Sharpie
- Ruler
- Plastic wrap
- Large container
- Tape
- Small, Medium, and Large Ball weights ]]> 2016-03-22 00:20:27 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102124094 Procedure: madijust https://padlet.com/madijust/qgzwbjn3yyzp/wish/102124367 The materials were gathered and the saran wrap (enough to cover top of container and bit of sides) was taped over the container to a tight fit. Using the ruler and sharpie provided, a line was drawn from one inside edge to the other and the measurement was recorded in centimeters. In the center of the line, 400 g was placed on the wrap and a timer was started for 1 minute. After the minute was over, the weights were taken off and the wrap was removed from the container. The "new" line was measured and recorded and the procedure was repeated. With each trial, a new amount of weight was added (600 g for the 2nd and 800 g for the 3rd) and the wrap on the container was replaced with a fresh new sheet per trial.]]> 2016-03-22 00:24:54 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102124367 Hypothesis madijust https://padlet.com/madijust/qgzwbjn3yyzp/wish/102125091 - 400 g of weight would stretch the plastic wrap about 1/2 an inch.
- 600 grams would stretch the plastic about 1 inch.
- 800 grams would stretch the wrap about an inch and a half. 

** As the experiment went on, our hypothesi]]> 2016-03-22 00:35:51 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102125091 Materials mademeyer https://padlet.com/madijust/qgzwbjn3yyzp/wish/102126850 Tape
Ruler
Plastic Box
Plastic Wrap 
Small ball bearing 8.4 grams
Medium ball bearing 29.3 grams
Large ball bearing 131.8 grams
]]> 2016-03-22 00:55:45 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102126850 Procedure mademeyer https://padlet.com/madijust/qgzwbjn3yyzp/wish/102126932 Plastic wrap was placed over a 31 cm plastic box and held down by tape. A small ball bearing(8.4grams) was held 1 meter above the center of the box. The ball was dropped onto the plastic and qualitative data was observed. A medium ball bearing(29.3gram) was held 1 meter above the center of the box.The ball was dropped onto the plastic and qualitative data was observed. A large ball bearing(131.8 grams)  was held 1 meter above the center of the box.  The ball was dropped onto the plastic and qualitative data was observed.]]> 2016-03-22 00:56:57 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102126932 Controls: madijust https://padlet.com/madijust/qgzwbjn3yyzp/wish/102126938 In order to isolate our results, our controls were the amount of time each amount of weight was placed on the wrap and the box. These were kept constant because if one amount of weight was on for longer, it could have slowly stretched it more over time and if it was not on at the same time, it could have not had the "opportunity" to stretch the material as the others.]]> 2016-03-22 00:57:04 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102126938 Results mademeyer https://padlet.com/madijust/qgzwbjn3yyzp/wish/102127082 Trial 1: 
  • Made small dent
  • Dent smoothed out 
  • Small ball bearing was 8.4 grams
  • Dropped at 1 meter
Conclusion: small ball bearing did not go through the plastic, but made a small dent.

Trial 2: 
  • Made a bigger dent 
  • Dropped at 1 meter 
  • Medium ball bearing was 29.3 grams
  • Ripples left in plastic wrap
Conclusion: medium ball bearing did not go through the plastic, but made a larger dent

Trial 3: 
  • Dropped at 1 meter
  • Large ball bearing was 131.8 grams
  • Ball went right through the plastic
  • Left a flap
  • Hole is the size of the ball
Conclusion: Large ball bearing broke through plastic
]]> 2016-03-22 00:59:17 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102127082 Results: madijust https://padlet.com/madijust/qgzwbjn3yyzp/wish/102127187 Trial 1: Plastic wrap did not stretch.

Trial 2: Plastic wrap did not stretch.

Trial 3: Plastic wrap did not stretch.

** As the trials were done, there was a noticeable "dip" in the wrap where the weight was applied. The dip increased as the trials went on and more weight was added.]]> 2016-03-22 01:00:59 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102127187 Hypothesis mademeyer https://padlet.com/madijust/qgzwbjn3yyzp/wish/102127205 Trial 1: Small ball bearing will not go through the plastic. 
Trial 2: Medium ball will go through the plastic
Trial 3: Large ball bearing will go through the plastic. 

]]> 2016-03-22 01:01:25 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102127205 Controls: mademeyer https://padlet.com/madijust/qgzwbjn3yyzp/wish/102128827 Independent Variable- Type of plastic 
Dependent Variable- How much weight the plastic can hold until it punctures the plastic
Control Group- Height of ball, type of plastic wrap
]]> 2016-03-22 01:22:00 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102128827 Link to data table: madijust https://padlet.com/madijust/qgzwbjn3yyzp/wish/102129203 https://docs.google.com/a/reg4.k12.ct.us/document/d/1QkK1-Y9-2wI_baILBdkpMOwj2hk-16G1QLvQqIrjaek/edit?usp=sharing]]> 2016-03-22 01:26:55 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102129203 Conclusion and analysis: madijust https://padlet.com/madijust/qgzwbjn3yyzp/wish/102129580 Independent Variable: Plastic Wrap.
Dependent Variable: Weight added.

1+ 2) Even though only one type of plastic was tested, it is concluded that the plastic wrap we used was very strong and resistance. This conclusion was drawn because of the fact that the plastic did not stretch even when all of the provided "100 gram weights" were used. This is not concluding that plastic wrap is stronger than all types  of plastic, it is just concluding that is it very strong from what we have tested.
3) These results suggest that in the plastic tested, or the plastic wrap, the atoms have a strong bond. The data show that the atoms within the plastic have a small odds of separation or of being pulled apart considering that in the experiment, even 800 grams did not stretch the plastic even 1/10 of a centimeter.]]> 2016-03-22 01:31:11 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102129580 Qualitative data: madijust https://padlet.com/madijust/qgzwbjn3yyzp/wish/102130781 - Amount of creases each trial changed
- May have affected the data because it showed the tightness of the plastic.
- The wrap looked like it was stretching because of the dip from the weight. ]]> 2016-03-22 01:44:22 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102130781 Conclusion mademeyer https://padlet.com/madijust/qgzwbjn3yyzp/wish/102186285
  • Hypothesis were overall supported
  • Results were fair
  • Use different types of plastic
  • Valid investigation
  • Analysis questions

    • ]]>     2016-03-22 12:30:05 UTC https://padlet.com/madijust/qgzwbjn3yyzp/wish/102186285