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Ten different types of culture media were inoculated with the same strain of bacteria and incubated at the same temperature. Nine of the cultures grew. Which of these conclusions can be drawn from this information?
a valid hypothesis
Quantitative
variable that is being manipulated
valid because the sample size was sufficient for accuracy
One of the media lacked the nutrients needed for the bacteria to grow.
Is this a good song?
How do size and shape affect an object’s rate of free fall?
test one variable at a time
The independent variable in an experiment is the
a valid hypothesis
Quantitative
variable that is being manipulated
valid because the sample size was sufficient for accuracy
One of the media lacked the nutrients needed for the bacteria to grow.
Is this a good song?
How do size and shape affect an object’s rate of free fall?
test one variable at a time
As temperature drops to the dew point, clouds form in the atmosphere, and dew forms on ground surfaces. A scientist proposes that adding more water molecules to the atmosphere will change the dew point. This proposal is —
a valid hypothesis
Quantitative
variable that is being manipulated
valid because the sample size was sufficient for accuracy
One of the media lacked the nutrients needed for the bacteria to grow.
Is this a good song?
How do size and shape affect an object’s rate of free fall?
test one variable at a time
In order to be valid, an experiment can only
a valid hypothesis
Quantitative
variable that is being manipulated
valid because the sample size was sufficient for accuracy
One of the media lacked the nutrients needed for the bacteria to grow.
Is this a good song?
How do size and shape affect an object’s rate of free fall?
test one variable at a time
Which of the following questions CANNOT be answered by science?
a valid hypothesis
Quantitative
variable that is being manipulated
valid because the sample size was sufficient for accuracy
One of the media lacked the nutrients needed for the bacteria to grow.
Is this a good song?
How do size and shape affect an object’s rate of free fall?
test one variable at a time
Data that can be measured is said to be
a valid hypothesis
Quantitative
variable that is being manipulated
valid because the sample size was sufficient for accuracy
One of the media lacked the nutrients needed for the bacteria to grow.
Is this a good song?
How do size and shape affect an object’s rate of free fall?
test one variable at a time
In an investigation 10,000 dung beetles were examined for the presence of parasites. The data showed that about 5% of the beetles had parasites. The results are —
a valid hypothesis
Quantitative
variable that is being manipulated
valid because the sample size was sufficient for accuracy
One of the media lacked the nutrients needed for the bacteria to grow.
Is this a good song?
How do size and shape affect an object’s rate of free fall?
test one variable at a time
Objects of the same mass but of different sizes and shapes were dropped from a given height. Their rates of free fall were measured and recorded. Which of the following is most likely the question this experiment was designed to answer?
a valid hypothesis
Quantitative
variable that is being manipulated
valid because the sample size was sufficient for accuracy
One of the media lacked the nutrients needed for the bacteria to grow.
Is this a good song?
How do size and shape affect an object’s rate of free fall?
test one variable at a time
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