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Nature Of Science
Test Description: Scientific method, variables, inferences, theory, law
Instructions: Answer all questions to get your test result.
1) The best description of a theory is...
A
a statement describing what always happens under certain conditions
B
a description of a specific relationship under given conditions
C
an explanation based on opinion
D
a well-supported and widely accepted explanation of nature
2) Which of these statements best describes how scientific ideas change?
A
As a scientific idea changes, it eventually becomes a scientific theory and then a law
B
Scientists form opinions based on evidence and decide how the idea should change
C
Scientific ideas rarely change, because they are based on extensive evidence.
D
New evidence leads to modification of ideas.
3) A chemist wants to examine specific chemical reactions and isolate certain products using a controlled experiment. How would the chemist perform this experiment?
A
in the field
B
by performing a survey
C
by using scientific laws
D
in a laboratory
4) Which of these scientists would most likely engage in fieldwork to observe organisms
A
mathematician
B
physicist
C
chemist
D
biologist
5) Which term describes a collection of observations on which a scientific explanation is based
A
empirical evidence
B
fieldwork
C
scientific theory
D
scientific law
6) During a scientific investigation, which step will a scientist likely perform first?
A
Plan the experimental procedure.
B
Defend conclusions drawn from data.
C
Collect and organize data.
D
Define the problem for investigation.
7) Which of these answers best describes a scientific law?
A
a description of a specific relationship under given conditions
B
an explanation based on the opinion of a scientist
C
a statement describing what always happens under certain conditions
D
a well-supported and widely accepted explanation of nature
8) How many independent variables does an experiment have?
A
two
B
four
C
three
D
one
9) What is a logical conclusion based on observations called?
A
observation
B
inference
C
data
D
experiment
10) Scientific investigations include many different steps. During a scientific investigation, which step occurs after a scientist collects data?
A
follow the procedure
B
plan the experiment
C
form the hypothesis
D
draw conclusions
*select an answer for all questions
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