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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 do birds fly?
B
How does a clock work?
C
Is this a good song?
D
What is an atom?
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
a valid hypothesis
C
an invalid observation
D
a valid conclusion
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 does gravity affect objects of different densities?
B
How does height affect the force of gravity?
C
How do mass and weight affect falling objects?
D
How do size and shape affect an object’s rate of free fall?
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
unsupported because the parasite population was small
B
erroneous because more beetles should have had parasites
C
invalid because only dung beetles were examined
D
valid because the sample size was sufficient for accuracy
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
The temperature varied greatly during the experiment.
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
One of the media lacked the nutrients needed for the bacteria to grow.
6) Which of these is a hypothesis that can be tested through experimentation?
A
Tadpoles’ fear of carnivorous insect larvae increases as the tadpoles age.
B
Bacterial growth increases exponentially as temperature increases.
C
The number of times a dog wags its tail indicates how content the dog is.
D
A fish’s ability to taste food is affected by the clarity of aquarium water
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
valid
B
Quantitative
C
invalid
D
Qualitative
9) The independent variable in an experiment is the
A
variable that remains constant
B
variable that is not tested
C
variable that results from a manipulation
D
variable that is being manipulated
10) The dependent variable in an experiment is the
A
variable that is not tested
B
variable that remains constant
C
variable that is being manipulated
D
variable that results from a manipulation
*select an answer for all questions
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