# data[].attributes.body
Hypothesis were overall supported

Results were fair

Use different types of plastic

Valid investigation

Analysis questions

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- 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.

# data[].attributes.body
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.

# data[].attributes.body
https://docs.google.com/a/reg4.k12.ct.us/document/d/1QkK1-Y9-2wI_baILBdkpMOwj2hk-16G1QLvQqIrjaek/edit?usp=sharing

# data[].attributes.body
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

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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.

# data[].attributes.body
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.

# data[].attributes.body
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

# data[].attributes.body
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.

# data[].attributes.body
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.

# data[].attributes.body
Tape

Ruler

Plastic Box

Plastic Wrap

Small ball bearing 8.4 grams

Medium ball bearing 29.3 grams

Large ball bearing 131.8 grams

# data[].attributes.body
- 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

# data[].attributes.body
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.

# data[].attributes.body
- Timer
- Sharpie
- Ruler
- Plastic wrap
- Large container
- Tape
- Small, Medium, and Large Ball weights