Read
Lab 4: Energy Sources and Alternative Energy
. This lab will allow you to investigate the effects of acid mine drainage through experimentation. Additionally, it will allow for the exploration of solar energy through the use of a solar cell motor. Then, utilize this information and your eScience lab kit to complete Experiments 1 and 2 on the
Lab 4 Reporting Form
, completing all tables as you proceed. Make sure that all of the following items are completed before submission:
All post lab questions for “Lab 4: Energy Sources and Alternative Energy” should be completed on the Lab 4 Reporting Form. Save your completed Lab 4 Reporting Form as a Word document. The document must be formatted according to APA style, including a title page and references page.
Lab 4 – Experiment 1: The Effects of Coal Mining
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Table 1: pH of Water Samples |
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Water Sample |
Initial pH |
Final pH |
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Pyrite |
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Activated Carbon |
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Water |
Hypothesis:
Post-Lab Questions
1. Restate your hypothesis. Was it confirmed or denied? How do you know?
2. What, if any, change did you observe within your water samples?
3. What type of substance formed in the jars?
4. What effect do you predict coal mining has on the environment?
5. What can be done to prevent mine drainage from damaging the ecosystem?
Lab 4 – Experiment 2: Solar Energy
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Table 2: Solar Energy Experiment Results |
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Environmental Descriptor/Variable |
Observations |
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Weather of the Day |
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Light Source |
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Incandescent Bulb Wattage |
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Sunlight Angle |
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Sunlight with Reflector |
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Shaded Configuration A Description |
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Shaded Configuration B Description |
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Shaded Configuration C Description |
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Red Filter |
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Blue Filter |
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Green Filter |
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Yellow Filter |
Hypothesis:
Post-Lab Questions
1. Restate your hypothesis. Was it confirmed or denied? How do you know?
2. How did the revolutions of the motor compare when the solar cell was held to an incandescent light source vs. the sun as a light source?
3. Does increased exposure to the sun’s light produce more current? Explain.
4. How did shading different parts of the solar panel affect the motor’s output?
5. What effect did you observe when different colored filters were placed atop the solar panel? What does this indicate about different wavelengths of light?
6. How could you increase the electricity generated by a solar cell during the day, when the sun’s angle is constantly changing?
© eScience Labs, 2012
Tableof Contents Environmental Science
Lab 4
Energy Sources and Alternative Energy
Introduction
Non-renewable Sources
Concepts to ExploreConcepts to ExploreConcepts to ExploreConcepts to Explore
???? Did You Know… Did You Know… Did You Know… Did You Know…
Energy Sources and Alternative Energy
Passive Solar Energy
Active Solar Energy
Energy Sources and Alternative Energy
Photovoltaics
Energy Sources and Alternative Energy
Wind Energy
Energy Sources and Alternative Energy
Experiment 1: The Effects of Coal Mining
Procedure
Materials
Energy Sources and Alternative Energy
Hypothesis
Post-Lab Questions
Energy Sources and Alternative Energy
Experiment 2: Solar Energy
Procedure
Materials
Energy Sources and Alternative Energy
Energy Sources and Alternative Energy
Energy Sources and Alternative Energy
Hypothesis
Post-Lab Questions
Energy Sources and Alternative Energy
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