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PURPOSE
The purpose of this experiment was to see how different types of polluted water affected the survival time of brine shrimp.
I chose this idea because I am interested in pollution and want to see how long micro organisms can live in water that is polluted.
The information gained from this experiment might show people how bad pollution is for living creatures in the water or on the land.
HYPOTHESIS
My hypothesis was that the brine shrimp would live the longest in the saltwater because they usually live in saltwater naturally (the salt for the sidewalks has salt in it.)
I base my hypothesis on the information
I gained at the Selah Public Library. I found out that the shrimp will
be the least affected by the salt for sidewalks.
EXPERIMENT DESIGN
The constants in this study were the water temperature, the amount of water, room temperature, number of brine shrimp, the kind of brine shrimp, the same amount of time, and the same amount of pollutants.
The manipulated variable was the type of pollutant.
The responding variable was how long brine shrimp lived in the pollutant.
To measure the responding variable I will time how long the brine shrimp can live in each pollutant using a stopwatch.
MATERIALS
| QUANTITY | ITEM DESCRIPTION |
| 1 each | Gasoline, Anti-freeze , Saltwater, Fertilizer |
| 5 | Plastic cups |
| 2 cups | Tap Water |
| 1 | bubbler |
| 1 | Brine Shrimp hatching kit |
| 1 | Stopwatch |
PROCEDURES
1. Gather your materials.
2. Follow the directions on the package
or on the instruction paper to hatch
them. The kit usually has a container
for you to hatch in them so you would need to start from there. There is
a package of brine shrimp eggs with salt in it. You pour the mixture into
the container with water. Then you just wait for them to hatch.
3. Once they have hatched, you can begin
your experiment.
4. Put five plastic cups on a flat surface
5. Fill one of the jars with a half-cup
of plain water and fill the other four with the same amount of water and
add one fourth of a teaspoon of pollutant to each of the four. Leave one
plain without any pollutant. This is your control group.
6. Divide the brine shrimp into five
groups.
7. Put one group into each of the five
cups.
8. Leave them on a shelf where they will
not be bothered.
9. Observe them every fifteen minutes.
10. Record the number in each group still
alive.
11. Repeat observations for four hours.
RESULTS
The original purpose of this experiment was to see how different types of polluted water affected the survival time of brine shrimp.
The results of the experiment were that the Brine shrimp live the longest in the salt rather than any of the other pollutants.
CONCLUSION
My hypothesis was that the Brine shrimp would live the longest in the saltwater because they usually live in the ocean or in the salt lakes.
The results indicate that this hypothesis should be accepted.
Because of the results of this experiment, I wonder how the saltiness level in the water would affect the survival time of brine shrimp.
If I were to conduct this project again
I would check on them every fifteen minutes instead of every five minutes.
I would also take pictures of me doing the experiment .
ACKNOWLEDGEMENTSIwould like to thank the following people who helped make my science project possible
- Mr. Newkirk for teaching me the scientific method.
- Mrs. Pasckvale for taking our pictures with our boards.
- Mrs. Hostetler for helping us with our projects and evaluating them.
- My Mom and Dad for buying the Brine shrimp hatching kit and the pollutants.
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