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Scientific Method and Lab Questions

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1. List and describe the steps of the scientific method.

3. Is it sufficient to do a single experiment to test a hypothesis, why or why not?

4. What do you call a sample that goes through all the steps of an experiment but does not contain the factor being tested?

7. Why is it important to test one substance at a time when doing an experiment?

Indicate whether statements 8 and 9 are hypothesis, conclusions, or theories.

8. The data show vaccines protect from disease.
9. All living things are made of cells

Questions about a lab project (see attached file):

2. Describe the pillbug, including its classification and its structure. (Or the type of organism you are using)
3. Describe how the pillbug or your organism displayed behaviors that would
a. protect it from predators.
b. help it acquire food.
c. protect it in its environment.
d. allow interaction with its environment.
4. When the pillbug crawls on you hand, how does it feel or how does it act?
5. Insert the data that was received for the following tables: [see attachment]
5. What part of a pill bug is for protection, and does tit do to protect itself?
6. Name one criterion that you used to formulate your hypotheses regarding pill bug reactions toward various substances.

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Solution Preview

Scientific Method Worksheet

1. List and describe the steps of the scientific method.
The scientific method is a series of steps that are used to formulate and test scientific hypotheses. The steps are:
(1) Observation: you observe some phenomena or occurrences and identify a problem or something that is yet unexplained.
(2) Background: you learn what the existing knowledge is about this phenomenon/problem, and search for items that might help answer your question.
(3) Hypothesis: after your observations and background research, you propose a hypothesis concerning the phenomenon; the hypothesis must be testable.
(4) Experimentation: you design and conduct an experiment to test the truth or falseness of the hypothesis.
(5) Results: you analyze the results of your experiment and see if they support or undermine your hypothesis. If the results are inconclusive, design a new experiment.
(6) Conclusion: if the results were conclusive, accept, modify, or reject the hypothesis as the case may be. Check to see if your results and your acceptance/modification/rejection of your hypothesis adds to or contradicts the existing knowledge on this topic.
(7) Repeat: repeat the experiment to confirm your results; identify new questions raised after the completion of your study.

2. Describe the pillbug, including its classification and its structure. (Or the type of organism you are using)
I used the garden slug. The slug is in the kingdom Animalia, the phylum Mollusca, the class Gastropoda, the order Pulmonata, the suborder Stylommatophora, and the family Arionidae. The scientific name is Arion hortensis. The slug is native to Europe and North America. Its habitat is moist terrestrial places such as gardens and parks. It is nocturnal, and spends more time underground than the snail. Slugs eat many things including: vegetation, ...