North Carolina Science Grade 8

Chapter 1: The Nature of Science and Technology

The Nature of Science

1.
A(n) __________ is a well-organized procedure that tests an idea.
A)experiment
B)hypothesis
C)theory
D)method
2.
What occurs when the expectations of a scientist change how the results of an experiment are viewed?
A)bias
B)conclusion
C)data
D)revision
3.
A(n) __________ is a rule that describes a pattern in nature.
A)scientific law
B)hypothesis
C)theory
D)observation
4.
__________ science deals with living things.
A)Human
B)Earth
C)Physical
D)Life
5.
Which of the following questions is legitimate for science to consider?
A)How many seals can a killer whale consume per day?
B)Which type of orchid flower is most beautiful?
C)When is religion better than philosophy?
D)Is competition good or evil?
6.
__________ science investigates Earth and space.
A)Physical
B)Earth
C)Astrology
D)Life
7.
What factor is not changed in an experiment?
A)temperature
B)constant
C)independent variable
D)dependent variable
8.
A(n) __________ is a prediction or explanation that can be tested by experimentation.
A)method
B)scientific law
C)hypothesis
D)theory
9.
Explanations of natural phenomena supported by large amounts of data are called __________.
A)laws
B)theories
C)experiments
D)hypotheses
10.
__________ is the practical application of science.
A)Technology
B)Scientific law
C)Knowledge
D)Data
11.
How are a hypothesis and a theory similar?
A)They are attempts to explain natural phenomena.
B)Neither a hypothesis nor a theory can be revised.
C)They are about equally true.
D)Theories and hypotheses are produced by experts.
12.
__________ science deals with matter and energy.
A)Earth
B)Life
C)Social
D)Physical
13.
Which of the following models can you see and touch?
A)concept
B)physical
C)computer
D)idea
14.
Which of the following is an example of technology?
A)studying the behavior of light as it travels through fiber optic wires
B)studying how to harness the energy of sunlight
C)developing new materials based on knowledge gained by studying animals
D)studying how the skin of a shark repels water
15.
__________ is a process that uses observation and experimentation to gain knowledge about the regularities in nature.
A)Science
B)Graphing
C)Measurement
D)Hypothesizing
16.
Information gathered during experiments is/are called __________.
A)data
B)conclusions
C)a theory
D)a hypothesis
17.
Which of the following is not useful for showing patterns in data?
A)table
B)chart
C)graph
D)procedure
18.
Which of the following is NOT a method that scientists might use to communicate their findings to other scientists?
A)mental telepathy
B)publishing articles in professional journals
C)publishing reports on the Internet
D)giving speeches at conventions
19.
What is the primary difference between a scientific theory and a scientific law?
A)A theory describes a pattern and a scientific law explains why something happens.
B)A theory explains why something happens and a law describes a pattern.
C)A theory does not have a large body of supporting data.
D)Scientific theories are absolute.
20.
A(n) __________ is something that represents an idea or object to help people better understand it.
A)method
B)observation
C)model
D)theory
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