Sun and Medium Motor Speed
Lab 4 – Energy Sources and Alternative Energy
Experiment 1: The Effects of Coal Mining
Table 1: pH of Water Samples
Water Sample
Initial pH
Final pH (24-48 hours)
Pyrite
6.9
6
Activated Carbon
6.9
7
Water
6.9
6
POST LAB QUESTIONS
1. Develop hypotheses predicting the effect of pyrite and coal on the acidity of water?
a. Pyrite hypothesis = it can contaminate water or dirt by increasing acidity levels.
b. Coal hypothesis = can cause a problem with underground mining because it can cause the river and the minds to be polluted. It can also increase the tempters and the ph.
2. Based on the results of your experiment, would you reject or accept each hypothesis that you produced in question 1? Explain how you determined this.
a. Pyrite hypothesis accept/reject = I accept my hypothesis because of all the acid that produces with the material used as well as the damage it makes to many surfaces
b. Coal hypothesis accept/reject = I accept my hypothesis because of the pollution and the minds are being claps.
3. Based on your data, what effect do you predict coal mining has on the environment?
Answer =
4. What can be done to prevent mine drainage from damaging the ecosystem? Utilize at least one scholarly resource to support your suggestions.
Answer =
Experiment 2: Solar Energy
Table 2: Solar Energy Experiment Results
Environmental Descriptor/Variable
Observations
(Each should be compared against direct subnlight)
Weather of the Day
Cloudy,49 degrees, wind wsw 5 mph
Motor speed in direct sunlight
Medium
Motor speed at 45 degree angle
Medium
Motor speed under reflectors
Medium
Motor speed with 25% shaded
Medium
Motor speed with 50% shaded
Medium
Motor speed with 75% shaded
Medium
Motor speed under red filtration
Medium
Motor speed under blue filtration
Medium
Motor speed under green filtration
Medium
Motor speed under yellow filtration
Medium
Post-Lab Questions
1. Develop hypotheses predicting the efficiency of solar energy from direct sunlight
Experiment 1: The Effects of Coal Mining
Table 1: pH of Water Samples
Water Sample
Initial pH
Final pH (24-48 hours)
Pyrite
6.9
6
Activated Carbon
6.9
7
Water
6.9
6
POST LAB QUESTIONS
1. Develop hypotheses predicting the effect of pyrite and coal on the acidity of water?
a. Pyrite hypothesis = it can contaminate water or dirt by increasing acidity levels.
b. Coal hypothesis = can cause a problem with underground mining because it can cause the river and the minds to be polluted. It can also increase the tempters and the ph.
2. Based on the results of your experiment, would you reject or accept each hypothesis that you produced in question 1? Explain how you determined this.
a. Pyrite hypothesis accept/reject = I accept my hypothesis because of all the acid that produces with the material used as well as the damage it makes to many surfaces
b. Coal hypothesis accept/reject = I accept my hypothesis because of the pollution and the minds are being claps.
3. Based on your data, what effect do you predict coal mining has on the environment?
Answer =
4. What can be done to prevent mine drainage from damaging the ecosystem? Utilize at least one scholarly resource to support your suggestions.
Answer =
Experiment 2: Solar Energy
Table 2: Solar Energy Experiment Results
Environmental Descriptor/Variable
Observations
(Each should be compared against direct subnlight)
Weather of the Day
Cloudy,49 degrees, wind wsw 5 mph
Motor speed in direct sunlight
Medium
Motor speed at 45 degree angle
Medium
Motor speed under reflectors
Medium
Motor speed with 25% shaded
Medium
Motor speed with 50% shaded
Medium
Motor speed with 75% shaded
Medium
Motor speed under red filtration
Medium
Motor speed under blue filtration
Medium
Motor speed under green filtration
Medium
Motor speed under yellow filtration
Medium
Post-Lab Questions
1. Develop hypotheses predicting the efficiency of solar energy from direct sunlight