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Freshman Science: Chapter 1 - The Nature of Science Flashcards | StudBud
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Freshman Science: Chapter 1 - The Nature of Science
Freshman Science: Chapter 1 - The Nature of Science
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#science #ninth #scientificmethod #variables
Flashcards
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Questions
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Answers
1
How do weight and mass differ?
Weight = space an object occupies. Mass = amount of matter
Weight = amount of matter. Mass = force of gravity
Weight = force of gravity. Mass = amount of matter
2
A scientific representation of an object or event that is used to study the real object/event.
a model
a hypothesis
a theory
a law
3
In the experiment that we conducted with balls and ramps, the dependent variable was:
the height of each ramp individually
the type of ball used
the range that the balls flew out to
the launch height of the balls
4
A typical unit for measuring
mass
in the metric system may include...
g/mL (grams per milliliter)
meters (m)
kilograms (kg)
liters (L)
5
In order to be valid, what three qualities must a scientific theory possess?
be quantitative, be predictable, be flexible
explain all observations, be repeatable, be predictable
work well under certain conditions, be predictable, be safe
6
(1.2 x 10
8
) * (2.25 x 10
3
) =
3.56 x 105
1.74 x 1012
2.67 x 105
2.7 x 1011
7
13 kilometers converted to meters
300 m
3,000 m
13,000 m
13,000,000 m
8
The factor being manipulated by a researcher in an experiment is the _________ variable.
controlled
dependent
independent
initiated
9
A scientific explanation for how and why something occurs, backed by a large body of evidence.
Scientific Law
Scientific Theory
Hypothesis
Scientific Conclusion
10
A scientific law is more broad than a theory, it explains both why and how events occur.
TRUE
FALSE
11
The three main branches of science that are typically recognized:
physical, life, and earth science
physics, chemistry, and biology
geology, mineralogy, and earth science
biology, microbiology, and physical science
12
How many sig figs are in the number: 504.2
three
five
two
four
13
Dependent variables are typically graphed on which axis?
the yolo-axis
the abc-axis
the x-axis
the y-axis
14
Scientific Laws have strong predictive power and explain how something will happen under...
a broad variety of conditions
any given set of conditions
all possible conditions
certain conditions
15
Scientific models can take what forms?
physical, conceptual, and computer
biological, chemical, qualitative
procedural, conceptual, metaphorical
qualitative and qualitative
16
The prefix "kilo" indicates that how many grams are in a kilogram?
10 g
100 g
1,000 g
10,000 g
17
How can a hypothesis best be described?
a description of how something works
an explanation backed by a large body of evidence
a possible explanation or answer which can be tested
18
In the experiment that we conducted with balls and ramps, the independent variable was:
the launch height of the balls
the range that the balls flew out to
the type of ball used
the height of each ramp individually
19
0.25 ml of Acetic Acid were produced by the chemical reaction. Qualitative or Quantitative?
cannot determine what kind of statement this is
qualitative
quantitative
20
The reaction produced a "thick, black liquid in the beaker". Qualitative or Quantitative?
cannot determine what kind of statement this is
qualitative
quantitative
21
How is technology most commonly described?
the application of scientific knowledge
the use of scientific knowledge to make money
the process of gathering knowledge about nature
the process of converting standard and metric units
22
Evaluate (2.52 x 10
5
) x (0.1) with the correct number of sig figs in the answer:
2 x 104
2.52 x 104
0.25 x 106
2.52 x 106
23
750 centimeters converted to meters
75.0 x 10^2
7.5 x 10^2
0.75 x 10^3
7.5 x 10^-2
24
How many sig figs in the number: 0.5050
two
three
four
five
25
A 150 kg person travels to Mars (weaker gravity than Earth). How does the person's mass change?
it increases
it decreases
need to know more information to determine the answer
the person's mass will not increase or decrease
26
7,500,000 meters written in scientific notation
7.5 x 10^6 m
0.75 x 10^5 m
7.5 x 10^-6 m
65.0 x 10^5 m
27
25 centimeters converted to millimeters.
2,500 mm
25,000 mm
250 mm
2.5 mm
28
The best definition of science is given by which of the following...
an unchanging series of strictly followed steps for learning
a large collection of facts
the process & collection of knowledge from observing nature
29
A very precise measurement is one that:
is as close to the real value being measured as possible
has at least six significant figures
is very fine or exact in nature
has at least three significant figures
30
A very accurate measurement is one that:
is very fine or exact
is as close to the real value being measured as possible
has at least six significant figures
has at least three significant figures
31
The factor being measured/observed by a researcher in an experiment is the _________ variable.
independent
initiated
dependent
controlled
32
Derived units come from:
converting between metric and imperial units
a combination of two base units in the metric system
adding a prefix to a base unit in the metric system
33
The total space within a beaker describes what characteristic of the beaker?
it's volume
the beaker's mass
the density of the beaker
it's weight
34
The base unit for
length
in the metric system: (think about distances, ranges, etc.)
Pounds
Meters
Liters
Grams
35
The amount of matter that a person's body possesses is described by what measurement?
length
volume
weight
mass
36
Independent variables are typically graphed on which axis?
the xyz-axis
the y-axis
the z-axis
the x-axis
37
Qualitative data typically takes what form?
mathematical or numerical measurements of an observation
general descriptions of what is being observed
38
(4.22 x 10
5
) / (1.24 x 10
3
) =
3.4 x 108
340
5.46 x 102
5.46 x 108
39
The base unit for
volume
in the metric system: (think about bottles and beakers)
Pounds
Grams
Meters
Liters
40
Which of these is an example of quantitative data?
10.5 grams of carbon were produced by the reaction
the reaction vessel became very warm to the touch
the chemical reaction ran to completion very quickly
the reaction produced a large amount of gas
