SCI 207 (Dependence of Man on The Environment) Entire New Course
SCI 207 NEW Week 1 Assignment Environmental Footprint
1. What are the 3 everyday products and practices that contribute most to your environmental footprint?
Mobility, Goods and services
2. What impacts might result if everyone in the world had the same lifestyle as you? For example, what might the impacts be on:
A. Earth’s climate? We would have a really polluted air more than what it is now
B. The health of ecosystems and biodiversity? It would not have much of a health
C. Humanity’s natural resource base and thus economic security? NO security or natural resource, our natural resources will be contaminated.
SCI 207 NEW Week 1 Lab 1 Introduction to Science
- What patterns do you observe based on the information in Table 4?
The fewer amounts of fish, the more oxygen there is in the water. They oxygen is measured in 2’s and the less fish there is the more oxygen there is.
- Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water?
The more fish there is, the less amount of oxygen there is in the water. According to author’s Mckinsey& Chapman, “for fishes, dissolved oxygen is an abiotic factor that can limit habitat quality and affect survival, growth, and reproduction” (Mckinsey, D. & Chapman, L. 1998, pg. 211, para. 1).
- What would your experimental approach be to test this hypothesis?
I would add fish to the water and test the oxygen, and then remove fish and test the oxygen with each (ppm) in counts of 2 (ppm). Also, I would use the same spot, and the same time of day.
- What would be the independent and dependent variables?
SCI 207 NEW Week 2 Lab 2 Water Quality and Contamination
Hypothesis:
If I put a mixture of potting soil and oil/vinegar/laundry detergent it will make four different types of dirty water.
Post-Lab Questions:
- 1. Restate your hypothesis. Was it confirmed or denied? How do you know?
If I put a mixture of potting soil and oil/vinegar/laundry detergent it will make four different types of dirty water. Yes, the experiment did confirm my hypothesis since when I added the soil mixture in it did make four dirty types of filthy water.
- 2. What affects did each of the contaminants have on the water in the experiment? Which contaminant seemed to have the most potent effect on the water?
The effects of the contaminated water were that the mixture showed each water type to have a brown color to them. The water type that seemed to have both a surprising and potent effect was the water and soil mixture. I would have thought with using strictly water and potting soil the water turned the darkest brown out of all the other contaminants that I used for the mixture. The vinegar and soil mixture seemed to have cleaner look to them.
- 3. On a larger scale, what type of affects would these contaminants have on a town’s water source and the people who drank the water?
If people were to ingest this contaminated water they might get sick, have birth defects, have trouble having a child, may die, etc.
- 4. What type of human activity would cause contaminants like oil, acid and detergents to flow into the water supply?
On a daily basis humans are dumping waste like oil and acid onto their earth without even realizing it. With drilling for oil they risk the occasional oil spill and if humans are taking the proper care of a landfill site they also risk these contaminates to sink into the Earth’s surface.
SCI 207 NEW Week 3 Assignment Outline if the Final Lab Report
ABSTRACT
Ground water is the biggest source of drinking water available to human population around the world and is rapidly being polluted because of industrialization and increasing demands of agriculture around the world. A set of simple experiments were done to find out what kind of changes do some of these contaminants cause in ground water. Samples of tap water and bottled water were also analyzed for safety. Chemicals like oil, vinegar and soap cause turbidity, odor and color change in water samples. Tap water is much safer to drink than bottled water because it contains less contamination than bottles water.
INTRODUCTION
Ground water is present below the surface in porous rocks and is susceptible to contamination by natural and especially human related activities. Large amounts of chemicals like soap and detergents, fertilizers and pesticides, pharmaceutical by-products are discharged in to fresh water aquifers every day. These contaminants leach in to the soil and dissolve in ground water. Different contaminants have different rates of solubility and degradation once they reach the underground water table either by simple flow or by the downward movement of rain water. The ground water may become contaminated with both organic and inorganic substances especially heavy metals like Cadmium, Chromium and Nickel, etc. (Christensen et al, 2001).
SCI 207 NEW Week 3 Lab 3 Biodiversity
Lab 3 - Experiment 1: Interdependence of Species
Table 1: Interdependence of Species Results | |
Round | Species Missing (Bead Color and Name) |
1 | Red-Flowers |
2 | Yellow-Bees |
3 | Orange-Trees |
4 | Blue-Humans |
Hypothesis: If trees were not part of the ecosystem, then there would be a lack of food for the bees.
Post-Lab Questions
- Restate your hypothesis. Was it confirmed or denied? How do you know?
If trees were not part of the ecosystem, then there would be a lack of food for bees. It was confirmed because of the chart that showed each part of the ecosystem and how it affected other parts of the ecosystem.
- Indicate which species was removed during each round of the experiment.
Flowers were removed the first round, bees in the second round, trees in the third round, and humans in the last round.
- Explain how the ecosystem was affected by the missing species for each round of the experiment.
In the first round the flowers weren’t there, which means the bees would lose out on a food source. In the second round there were no bees, which means the flowers and trees would not get pollinated. In the third round there were no trees, which means that the flowers wouldn’t get shade and wind protection. In the last round there were no humans, which I personally felt made the least significant change to the ecosystem.
- What actions do we as humans engage in that can lead to extinction of any of these components?
We as humans pollute the air and environment with our cars and littering carelessly. Also, we chop down trees to build building we do not need as much as the trees.
- What can we do to minimize our impact on the ecosystem?
SCI 207 NEW Week 4 Lab 4 Energy Sources and Alternative Energy
ab 4 - Experiment 1: The Effects of Coal Mining
Table 1: pH of Water Samples | ||
Water Sample | Initial pH | Final pH |
Pyrite | 5 | 5 |
Activated Carbon | 5 | 7 |
Water | 5 | 5 |
Hypothesis: The beaker with only water would be clear the carbon would turn black when added and the other one will turn grey.
Post-Lab Questions
- Restate your hypothesis. Was it confirmed or denied? How do you know?
The beaker with only water would be clear the carbon would turn black when added and the other one will turn grey. The beaker with water stayed clear so that was confirmed. The beaker that the carbon was added to did not turn black so that was denied. I know due to the carbon sank to the bottom and some floated on top. The third beaker did not turn grey. that was also denied. The pyrite sank to the bottom with a little floating at the surface of the water.
- What, if any, change did you observe within your water samples?
The changes that I observed was that the pyrite was at the bottom and a handful of the particles formed little balls. The water was a light shade of grey. The Carbon stayed mostly on the bottom with a handful of them on top of the surface and the water had a tint of black. The water remained clear but had air bubbles in the beaker.
- What type of substance formed in the jars?
The substance I would have to say was the ball formation of the pyrite and the air bubbles in the water.
- What effect do you predict coal mining has on the environment?
I would have to say that from the reading that it can be very harmful for the coal mining chemicals to seep into the ground into our drinking water.
- What can be done to prevent mine drainage from damaging the ecosystem?
Maybe putting in some weeping system that would pull the water to a different location that could drain into a container of some sort.
SCI 207 NEW Week 5 Lab 5 Weather and Climate Change
Lab 5 - Experiment 1: Modeling the Water Cycle
Hypothesis: The jar will steam up and sweat and the water will return to the water.
Post-Lab Questions
- Restate your hypothesis. Was it confirmed or denied? How do you know?
The jar will steam up and sweat and the water will return to the water. Yes, there was water under the lid of the jar.
- Which water cycle processes are represented in this model and by what components?
Evaporation and condensation, the warm water evaporated into water vapors that were trapped under the lid then returned to water.
- Which processes are not represented? How could the model be altered to include these processes? Transpiration, sublimation, surface run-off, infiltration, and percolation. I really do not see how to make the model different unless you also include soil and make the jar larger, but with the other experiment being done in the same week it all works together.
- How would the “weather” be affected if the water was at a decreased temperature? What about at an increased temperature? How could you model these changes in this system? I think that a decreased temperature would cause the water to evaporate slower and an increased temperature would cause it to evaporate quicker.
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