Lab 1 The Scientific Method

Topics: Scientific method, Data, Physical exercise Pages: 3 (1190 words) Published: March 19, 2014
BIO 110

Lab 1 The Scientific Method
Exercise 1
1. Based on the information in Table 2, the patterns I observed were that were 2ppm of Dissolved Oxygen added each time and there was 1 fish less than the amount of Dissolved Oxygen, then 4 fish less, then 3 fish less, then 4 fish less, than 5 fish less. I think that the fish can handle the amount of Dissolved Oxygen to an extent then the population falls, but then starts to build back up. I also think that if the population is a bigger number than the amount of Dissolved Oxygen, the population of fish will fall. 2. Hypothesis: If the amount of fish in a lake is higher than the amount of Dissolved Oxygen, then the population of the fish will fall and the fish will die. 3. My experimental approach for this hypothesis would be to put gradually increase the amount of Dissolved Oxygen as well as increasing the amount of fish in the lake until the amount of fish is higher than the amount of Dissolved Oxygen to see if the population of the fish will still increase or if it will decrease. 4. The independent variable is the ppm of the Dissolved Oxygen and the dependent variable is the population of fish. 5. My control would be the ppm of the Dissolved Oxygen in the lake. 6. The appropriate type of graph for this data set would be a line graph to see how the population of the fish increase and decrease as Dissolved Oxygen is added. 7.

8. From the data you can see that the population of fish increase as the Dissolved Oxygen increases, but when there’s too much Dissolved Oxygen, it over powers the water and the fish die, but the population will gradually build back up, but will probably fall again.

Exercise 2
1. “When a plant is place on a window sill, it grows faster than when it is place on a coffee table in the middle of the living room.” Hypothesis: If the plant is placed on the window sill, it will grow faster than if the plant were to be placed in the middle of the living room. Experimental approach would...
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