Lab 1: Scientific Method
Exercise 1
1. Based on the information in Table 2, it seems that the more dissolved oxygen in the water there is the higher the population of fish is.
2. If the ppm of dissolved oxygen is increased in water then there will be more fish observed.
3. The experimental approach to test this hypothesis would be to have two separate bodies of water, one with a set ppm of dissolved oxygen and another with an increasing amount of dissolved oxygen.
4. The Independent variable is the dissolved oxygen and the dependent variable is the number of fish observed.
5. The control is the fish.
6. The most appropriate graph for this data set would be a line graph because it showcases trends and findings within the trends.
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Control- fish
The data will be collected everyday at 7 o’clock and noon by counting the amount of fish caught at each time.
The most appropriate graph would be a bar graph.
I will analyze the data by looking for a trend in the amount of fish caught in the morning vs at noon.
4. No testable observation
5.
Hypothesis- eating healthy and exercising lowers blood pressure. Null Hypothesis- Blood pressure levels are not affected by eating fatty foods or healthy foods and exercise.
The experimental approach would be to check blood pressure levels after eating fatty foods and after eating healthy foods and exercising.
Dependent variable- Blood pressure levels. Independent variable- fatty/healthy foods and exercising.
Control- Sally
The data will be collected by testing the blood pressure levels daily after eating fatty foods and healthy exercise.
The most appropriate way to present the data would be by a table.
The data will be analyzed for any illustrations that indicate a relationship between healthy eating and exercise and lower blood pressure levels.
6. No testable observation
7. No testable observation
8. No testable observation
9. No testable observation
10.
Hypothesis- Ice cream melts faster in warm weather vs cold weather. Null Hypothesis- weather has no bearing on ice cream melting.
Taking ice cream outside on a warm day and then on a cold to see if warm weather affects the melting of ice cream would be the experimental approach.
Dependable
Answer = The graph demonstrates that as the dissolved oxygen levels increase the fish population will increase. The fish show strong growth from 6ppm to 12ppm dissolved oxygen. As the levels reach 14ppm to 18ppm the have a repeating effect as 6ppm to 12ppm.. With this being said, it shows that fish will show growth progress to a certain level of dissolved oxygen and then level off.
1. Record your hypothesis about what will happen when Biuret solution is mixed with the solutions from test tubes 1, 2, 3, and 4 here. Be sure to use scientific reasoning to support your hypothesis.
In this case, the independent variable is the gender and the dependent variable is the
You want to investigate a new wave of vitamin water is pH neutral. Results are: Three of the five samples turn a murky
2.1 To have an blood pressure maintenance we should maintain a healthy lifestyle, doing some exercises daily and eating healthier,
Based on the results of your experiment, would you reject or accept the hypothesis that you produced in question 1? Explain how you determined this.
Effect of Exercise on Arterial Pressure and Vascular Resistance Abbie DeBerg Ms. Brantley May 30, 2012
Why could having consumers as well as producers present change the amount of dissolved oxygen in the lake?
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.
- Having more dissolved oxygen increases the number of fish observed in the body of water.
* Physical exercise was recommended as well. Previous research has proven that physical exercise and good diet can efficiently control the patient blood pressure.
I would use a bar graph because it would be easy to follow and understand the information presented.
As the Dissolved oxygen increases so does the number of fish that are observed, until the ppm gets up to 14 then the
For starters, a fish stock is the subpopulation of fish that is studied in a particular region and are old enough to reproduce. Understanding a fish stock is important because they can tell scientists a lot about the population of fish in the area, and the oceanic conditions. This can help research and environmental efforts because they perform fish stock assessments as previously described in order to send out to fisheries to protect the fish and the environment. Assessments of fish stocks raise the question of how much catch can yield a sustainable population, current status’ of
important test of an individuals physical health since unhealthy levels can lead to heart attacks,