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Introduction to Physical Science Flashcards | StudBud
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Introduction to Physical Science
Introduction to Physical Science
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First days of school review information
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
a summary of what you have learned from a scientific experiment is called
hypothesis
inquiry
conclusion
law
2
all of the following are good examples of lab preparation EXCEPT
reading through the entire lab proceedure before starting
rushing through the steps in the laboratory
knowing safety and first aid proceedures
always following your teacher's instructions
3
The closeness of a measurement to its true value is its
significant figures
estimate
accuracy
precision
4
In science a hypothesis must be
correct
controlled
testable
manipulated
5
during an experiment, which factors must be controlled?
hypotheses
variables
inquiries
theories
6
Ways to calculate and "average" include
percent, median, and mode
mean, percent, and mode
mean, median, and mode
mean, median, and percent
7
Which of the following are not examples of data?
qualitative observations
quantitative observations
theories
measurements
8
you measure a string three times and get 34.cm, 34.1cm, 34.2cm. The actual length is 39.0.
you are both accurate and precise
Your measurement is accurate
your measurement is precise
you are neither precise nor precise
9
The middle number in a set of data is the
median
mean
mode
significant number
10
Noticing that sugar tastes sweet is a(an)
inference
hypothesis
qualitative observation
quantitative observation
11
Which branch of physical science studies the properties of matter and changes in matter?
chemistry
engineering
photography
physics
12
Many nonscience careers require an understanding of science because workers must
use materials
keep up with new developments in science.
use the process of scientific inquiry.
develop new scientific laws and theories.
13
Counting the number of cookies on a plate is a(an)
inference
quantitative observation
qualitative observation
hypothesis
14
The variable that is expected to change because of another variable is known as the
independent variable
responding variable
controlled variable
manipulated variable
15
What are some reasonable safety precautions for field investigations?
be prepared and use common sense
always go alone
none, there are never any hazards
always wear goggles and aprons
16
If new evidence does not support a scientific theory, scientists will most likely
modify the theory or discard it altogether.
take no action in the matter.
make the theory into scientific law.
ignore the new evidence
17
The factor that may change in response to the manipulated variable is called the
independent variable
responding variable
hypothetical variable
manipulated variable
18
add the following 3.7 g, to 9.495 g, the sum with the correct number of significant digits is
13.20
13.195
13.19
13.2
19
If scientists cannot obtain exact numbers, they may rely on a(an)
estimation
calculation
guess
assumption
20
A physical representation of an atom is an example of a scientific
theory
law
model
observation
