SCI 207 Week 4 Laboratory Questions

Topics: Sun, Light, Solar power Pages: 3 (553 words) Published: October 30, 2014

In this file of SCI 207 Week 4 Laboratory Questions you will find the next information:

1. Identify natural and human-made causes of climate change visible in the computer simulation. According to the computer model, how have sources of heat-trapping pollution changed from 1750 to today? How does the simulation predict they will change by 2050?

2. According to the computer model and your readings, which source of heat-trapping pollution, contribute the most to climate change? Explain.

3. Recalling your observations from the three time periods, how has the thickening blanket of heat-trapping pollution affected Earth
General Questions - General General Questions
Lab 4 - Experiment 1: The Effects of Coal Mining

Post-Lab Questions

1.  Restate your hypothesis. Was it confirmed or denied? How do you know?

1.  What, if any, change did you observe within your water samples?

1.  What type of substance formed in the jars?

1.  What effect do you predict coal mining has on the environment?

1.  What can be done to prevent mine drainage from damaging the ecosystem?

Lab 4 - Experiment 2: Solar Energy

1.  Restate your hypothesis. Was it confirmed or denied? How do you know?

1.  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?

1.  Does increased exposure to the sun’s light produce more current? Explain.

1.  How did shading different parts of the solar panel affect the motor’s output?

1.  What effect did you observe when different colored filters were placed atop the solar panel? What does this indicate about different wavelengths of light?

1.  How could you increase the electricity generated by a solar cell during the day, when the sun’s angle is constantly changing?  
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