1)A scientist at a chemical company designs and conducts an experiment to determine if a chemical made by the company is harmful to crops. To do this, he sprays the chemical on three plants he has in the laboratory. None of the plants survive. The scientist reports that the chemical is not harmful to crops and publishes a paper stating that the chemical should be sprayed on all fields. The scientist is being(1point
Observant
Unethical***
Skeptical
Open-minded
2)You need to do a research paper on global warming. Which of the following would be a reliable source for the information you need?(1point)
A popular tabloid magazine
A scientific journal about global literacy
An environmental government agency’s website***
A website that could be edited by anyone
3)A student makes the following statement: Chocolate- covered donuts are 10 times better than plain, glazed donuts. Which of the following correctly describes the student’s statement?(1point)
The student’s statement is a quantative observation.
The students statement is and inference.
The student’s statement is a prediction.
The student’s statement is an opinion. ***
4)A student observes dark clouds are surrounding the school and the grass on the playground is wet. The student reasons that it rained. Which scientific skill did the student use to determine that it rained?(1point)
Classification
Observation
Inference***
Prediction
5)A student made the following observations about a squirrel’s movements:
>The squirrel traveled about 500 meters between 1:00 p.m. and 2:00 p.m.
>The squirrel stopped 17 times to eat nuts.
> The squirrel rested twice.
> The squirrel ran in a zigzag pattern.
Which of the students observations is a qualitative observation?(1point)
The squirrel traveled about 500 meters between 1:00 p.m. and 2:00 p.m.
The squirrel stopped 17 times to eat nuts.
The squirrel rested twice.
The squirrel ran in a zigzag pattern.***
D
A
A
D
D
B
C
D
C
D
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agree
I think 1-4 are answered correctly although in real life I don't agree with #2; however, that is a personal opinion and your answer is correct. I'm on the fence about the squirrel. Your answer probably is correct but my problem is with the word "about" in statement 1. A distance of 500 meters is certainly a quantitative statement but about 500 meters, to me at least, makes it qualitative. To me about 500 meters is the same as saying 500 meters more or less and that makes it a guess in my book.
Thanks I'm done
1) In this scenario, the scientist is being unethical. The scientist designed and conducted an experiment with a biased outcome. By only spraying the chemical on three plants in the laboratory and drawing a conclusion from that, the scientist did not consider the possibility that the chemical could be harmful to other crops or in larger quantities. To determine whether the chemical is harmful to crops, a more comprehensive study should have been conducted involving a larger sample size and field trials.
2) The reliable source for information on global warming would be an environmental government agency's website. Government agencies are typically responsible for collecting and analyzing data related to environmental issues. Therefore, their websites are likely to provide scientific, accurate, and up-to-date information on global warming.
3) The student's statement, "Chocolate-covered donuts are 10 times better than plain, glazed donuts," is an opinion. It is a subjective statement based on personal preference and cannot be objectively measured or proven. Quantitative observations involve numerical measurements, inferences involve drawing conclusions based on evidence, and predictions involve making future projections.
4) The scientific skill that the student used to determine that it rained is inference. The student observed the dark clouds surrounding the school and the wet grass on the playground and used logical reasoning to conclude that it had rained. Inferences are conclusions drawn based on observations and prior knowledge.
5) The student's observation that the squirrel ran in a zigzag pattern is a qualitative observation. Qualitative observations involve describing qualities or characteristics without numerical measurements. In this case, the observation is based on the visual pattern of the squirrel's movement and does not involve precise measurements or quantities. The other observations listed involve numerical measurements (distance, frequency) or specific actions (resting, eating) and are therefore not qualitative observations.