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Scientific Method
Test Description: Questions on nature of science
Instructions: Answer all questions to get your test result.
1) Which of the following questions CANNOT be answered by science?
A
How does a clock work?
B
What is an atom?
C
Is this a good song?
D
How do birds fly?
2) 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
an invalid problem
B
an invalid observation
C
a valid conclusion
D
a valid hypothesis
3) 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
How do mass and weight affect falling objects?
B
How does gravity affect objects of different densities?
C
How do size and shape affect an object’s rate of free fall?
D
How does height affect the force of gravity?
4) 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
invalid because only dung beetles were examined
B
valid because the sample size was sufficient for accuracy
C
erroneous because more beetles should have had parasites
D
unsupported because the parasite population was small
5) 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
One of the media lacked the nutrients needed for the bacteria to grow.
B
Only the culture that failed to grow bacteria was inoculated properly.
C
The media used in the experiment are all capable of sustaining bacterial growth.
D
The temperature varied greatly during the experiment.
6) Which of these is a hypothesis that can be tested through experimentation?
A
A fish’s ability to taste food is affected by the clarity of aquarium water
B
Tadpoles’ fear of carnivorous insect larvae increases as the tadpoles age.
C
Bacterial growth increases exponentially as temperature increases.
D
The number of times a dog wags its tail indicates how content the dog is.
7) In order to be valid, an experiment can only
A
test four variables at a time
B
have no controls
C
have two controls
D
test one variable at a time
8) Data that can be measured is said to be
A
Qualitative
B
Quantitative
C
valid
D
invalid
9) The independent variable in an experiment is the
A
variable that is being manipulated
B
variable that remains constant
C
variable that results from a manipulation
D
variable that is not tested
10) The dependent variable in an experiment is the
A
variable that is being manipulated
B
variable that results from a manipulation
C
variable that is not tested
D
variable that remains constant
*select an answer for all questions
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