AnswersFL-2001340-Environmental Science Sem 1 CRUnit Test

Science-Based Communication Answers

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A student is conducting an experiment to determine how cold temperatures affect the growth of tadpoles in a tank of water. Which instrument would be most appropriate to use in this experiment?

A
a calibrated bulb thermometer that has a readout from –15°C to 25°C
B
a calibrated digital thermometer that has a readout from 50°C to 250°C
C
an uncalibrated bulb thermometer that has a readout from 0°C to 100°C
D
an uncalibrated digital thermometer that has a readout from –10°C to 100°C
2
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Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. Which is most likely to result in the greatest amount of error in their scientific experiment?

A
One student measures the plant stem widths by using calipers. The other student measures the widths of the same plant stems again by using a different pair of calipers.
B
One student measures the plant stem widths by using calipers. The other student types the measurements as they are taken into a computer spreadsheet.
C
One student measures liquids for the experiment by holding the flask up at eye level. The other student measures liquids for the experiment while the flask sits on the table.
D
One student weighs liquids for the experiment by using a calibrated scale. The other student weighs liquids for the experiment by using a different calibrated scale.
3

Which best describes the role of communication in scientific investigations?

A
Communication can help identify good scientific questions to further investigate.
B
Communication is not necessary once the data are collected because the scientists can do the data analysis themselves.
C
Communication should not be used in planning the experimental design because the scientists want to have original ideas.
D
Communication is important because the scientists need to convince other researchers not to challenge their results.
4

Juan is planning an investigation about natural reserves. Which of these is most likely to be a reliable source of scientific information on the Internet?

A
nationalnaturalreserves.com
B
nationalnaturalreserves.net
C
nationalnaturalreserves.gov
D
nationalnaturalreserves.info
5

A television program that presents the most recent developments in cancer research would be considered

A
a primary source.
B
a secondary source.
C
an original source.
D
an unbiased source.
6

A wildlife researcher weighed all the raccoons that were trapped in suburban neighborhoods before they were released back into the wild. The researcher used this data to conclude that the raccoons in the state were getting heavier. What error did the researcher make?

A
The sample is biased because it only weighed raccoons that were trapped in suburban neighborhoods.
B
The researcher should not have released the raccoons back into the wild.
C
The sample is biased because the averages of the weights were not calculated.
D
The researcher should have weighed other animals besides raccoons.
7

Which statement describes the most common ways in which students and professional scientists communicate the results of their scientific research?

A
Students communicate results in oral reports to the class, and professional scientists communicate results in written reports.
B
Students communicate results in scientific journals, and professional scientists communicate results in laboratory reports.
C
Students communicate results in laboratory reports, and professional scientists communicate results in scientific journals.
D
Students communicate results through secondary sources, and professional scientists communicate results through primary sources.
8

The process through which professional scientists evaluate the quality of each other’s research is called

A
group counsel.
B
group review.
C
peer counsel.
D
peer review.
9

Which statement describes a problem with the peer review process in scientific research?

A
It can sometimes reject important new ideas or novel techniques.
B
It forces new scientists to meet the same standards that established scientists meet.
C
It always requires scientists to have to reanalyze their data.
D
It often makes it more difficult to justify a conclusion.
10

Typical methods of classroom scientific communication include

A
scientific journal articles, oral presentations, and Internet collaboration.
B
lectures, lab reports, term papers, and poster presentations.
C
scientific journal articles, professional organizations, and conferences.
D
lectures, conferences, term papers, and technical journals.

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