Completion Section (5 pts. @)
Correctly complete the following questions.
1. The ________________ is the part of an experiment which is changed.
2. The ________________ is the part of the experiment is left unchanged that we compare to.
3. The metric prefix meaning 1/1000 is the _________________.
4. The metric prefix meaning 1/100 is the ___________________.
5. The metric prefix meaning X 1,000 of a unit is the ________________.
6. The variable which the experimenter changes or manipulates is called the ________________ variable.
7. An educated guess which guides a scientific experiment is called a(n) ______________________
8. The factor influenced by the independent variable is called the __________________________.
9. A well designed experiment should have ______ independent variable(s).
True-False Section: Indicate whether the following statement is true or false. (5 pts. @)
1. There is no need to gather information on a problem before a hypothesis is formed about the problem.
2. Results can be accurately repeated and results verified in an experiment, even if the design of the experiment is not good.
3. The hypothesis of an experiment must support the conclusion of the experiment.
4. One of the chief purposes of a hypothesis in an experiment is to direct the forming of the procedure of the experiment.
5. The greater the number of experimental trials, the lesser the validity of an experiment..
6. Scientific theory a generally accepted explanation of a concept or a broad explanation of a natural phenomena.
7. A researcher must strive to prevent personal opinion about a hypothesis from influencing how tests are made and must also be aware of the bias that any technique or instrument may introduce in the outcome of an experiment.
8. Charts, graphs, and drawings often form the data collected in an experiment.
9. Experiments and their results need not be repeated by other researchers to be considered valid.
Short Answer Question
Correctly indicate the missing steps of the scientific method in the scheme below.
Problem ----> ______1_________ ----> Materials and Procedure ----> Data Collected ----> ________2__________ (which may lead to more experimentation)