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Improvised Dew Traps
Introduction
Purpose
To further find suitable material to replace normal material used to make dew traps.
My project is about dew traps, it mainly focuses on the amount of water it collects. Using different material to construct the dew trap will be crucial. This project is used for survival and fun camping activities, it can be used to improvise dew traps. I am using material that would be readily available when camping outdoors in the wilderness. A trash bag and aluminum, cutting the trash bag to create a flat surface and layering the aluminum too create a flat surface. This is only experimental; this method of using the wraps is not yet proven successful or unsuccessful. Dew traps depend on condensation and temperature differentials. Dew traps require some moisture in the air for the trap to work.
Analysis
Trial 1:
The Aluminum Foil collected an amount of 0.1 millimeters of water.
The Plastic Bag collected an amount of 0.3 millimeters of water.
Trial 2:
The Aluminum Foil collected an amount of 1.3 millimeters of water.
The Plastic Bag collected an amount of 3.5 millimeters of water.
Trial 3
The Aluminum Foil collected an amount of 2 millimeters of water.
The Plastic Bag collected an amount of 6 millimeters of water.
The analysis of the results is the aluminum foil collected about 1/3 of the water collected from the plastic bag. So the plastic bag had collected more water than the aluminum foil.
Hypothesis
I believe the aluminum covering will work the more efficiently than the plastic trash bag. Metal usually conducts the heat quite well and heat is part of the condensation process. Although, with the aluminum not being clear, I have doubts.
Materials
Procedure
1. Dig two holes (measuring 2 foot in diameter and 1 foot in depth)
2. Put a bowl in the middle of the hole
3. Cover the hole in the wrap
4. Cover the edges of the wrap with debris
5. Put a small item in the middle
6. Wait till next morning
7. Collect dew before the sun rises
8. Carefully collect dew
9. Measure dew
10. Record
11. Dismantle trap
12. Repeat steps 2-9 with different wraps
Variables
· Plastic trash can bag
· Aluminum wrap
· Shovel
· Rocks or debris
· Ruler (A 1 foot standard ruler)
· Clear cup
· Clock
· Camera or Ipad for photos
· Scissors
· An adult
· Bowl
Dependent Variable: The amount of water collected.
Independent Variable: The material that covers the dew trap.
Conclusion
The conclusion of this project is that the plastic bag collected more water. My hypothesis was not correct; the material that collected the most dew was the plastic bag. My possible explanation for the plastic bag collected more dew is that the plastic bag is more transparent than the aluminum foil. The sun being able to go through lets the condensation process happen for smoothly. The aluminum foil did not have transparency in its characteristics. Aluminum usually crumples and wrinkles, letting dew collected on the material not being able to form smoothly. A plastic bag is smooth and does not crumple too easily when tampered. The results show that the plastic bag collects more water than the aluminum in all the trials. So whenever you are camping and stranded in an unknown area, be sure to use plastic if you are making a dew trap.
Background Research
Graphs
A dew trap is a condensation trap, the trap relies on condensation. Dew is the result of condensation on surfaces; my method is one of the methods that can be used to collect dew. I use the Modern Method, I dig a hole and cover the top with a sheet of material, and it resembles leaves from a tree that collects dew. A dew trap is also a solar still, by using the sun to start the process of condensation. I am to pin the sheet to the ground so moisture does not escape the trap, creating a seal. A dew trap requires key basic elements to work. One of the most important elements is condensation. What is condensation? Condensation is the reversion of vapor, or when a gas turns back into a liquid. A dew trap requires humidity in the air for it to collect it. Without the humidity, there would be no water to collect. An example is, dew covering the grass when you wake up, if you brush your hand on the grass, you will feel that your hand is wet. A glass of cold water is outside in the blistering heat, you notice that drops start to form on the cup. This is an example of condensation, a mixture of two fronts of temperature. Dew is little droplets of water on thin objects. In order for dew to form, it requires heat. The heat in my project is essential.