In an experiment, the one variable that is changed is called the
A.
dependent variable
B.
experimental variable
C.
independent variable
D.
controlled variable
Answer Explanation:
Therefore, the Correct Answer is C.
More Questions on TEAS 7
Q #1: Parasitic worm infestation is a hypothesized to be damaging to the host. However, scientists have recently discovered that worm infestation can relieve the effects of certain autoimmune disorders. In which of the following ways should the hypothesis be modified, given the new findings?
A.
Lack of worm infestations is the cause of some autoimmune disorders
B.
Worm infestation prevents the body from immune malfunction.
C.
Worm infestation reduces the severity of certain autoimmune disorders
D.
Worm infestations exacerbate the body’s immune reactions.
Answer Explanation
From the recent discovery, worm infestation relieves the effect of certain autoimmune disorders. From the given options, the hypothesis can be modified as: worm infestation reduces the severity of certain autoimmune disorders.
Q #2: In an experiment, the one variable that is changed is called the
A.
dependent variable
B.
experimental variable
C.
independent variable
D.
controlled variable
Answer Explanation
Q #3: Which of the following reasons explains why it is important for new scientific findings to be published?
A.
Publishing findings will help scientists become more biased
B.
Scientists will get paid if their findings are published
C.
Other scientists can validate or disprove the findings
D.
This prevents other scientists from performing similar tests.
Answer Explanation
Learning is a continuous process and publishing new findings help discover new and unknown discoveries. Publishing the results of experiments enables the scientific community the evaluate the finding themselves and help them repeat the experiment or build on them to verify or disapprove results.
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