A scientist has recorded whale sounds. What is he doing if he calculates the average length of each whale sound he recorded?
He is analyzing data.
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5
After observing phenomena and asking a question about it, a scientist could propose a hypothesis, or they could ___________.
Research their question to see if someone else has already done a scientific study to answer it.
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A scientist analyzes her data and says, "We gotta start this miserable experiment all over again." What is she doing?
Drawing a conclusion.
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5
A scientist who wants to study the affects of fertilizer on plants sets up an experiment. Plant A gets no fertilizer, Plant B gets 5 mg. of fertilizer each day, and Plant C gets 10mg. of fertilizer each day. Which plant is the control group
Plant A is the experimental control because it gets NO fertilizer.
An experimental control is the ABSENCE of what you are testing. You need it for comparison.
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5
An experiment with plants is testing the effect of increasing amounts of water and increasing sunlight availability. Why is this a bad experiment?
It has more than one independent variable. You will not know if it was the sunlight or the water that caused growth.
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5
When making a hypothesis, should you just restate the question?
For example, "Does increasing the heat make seeds germinate faster?"
Written as "Will more heat make germination happen quicker?"
Nope! Don't do this! Use an "if than" statement or a null hypothesis.
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5
What is qualitative data?
Qualitative data can be observed and recorded. This data type is non-numerical in nature.
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Is this a rule of the scientific method?
"Your hypothesis must be testable."
Yes! Your hypothesis MUST be testable.
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5
After deciding to subject bean seeds to different amounts of water (1 ml, 5 ml, 10 ml) a lab technician is tasked with measuring the length of bean roots once a week. What is this experiment's dependent variable?
The length of the bean seed roots.
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5
When you place one of these in your scientific paper, what are you doing?
Communicating your results.
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5
You have finished an experiment, gathered all your data, analyzed all the data using EXCEL, and you have come up with a conclusion. What's next?
Communicate your results.
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In scientific experimentation, what does it mean to replicate or have replication?
You have more than one test subject per treatment (4 sheep) or you repeat the experiment more than once in order to determine how correct the results are.