PHYSICS 165 MODULE 9 ACTUAL EXAM
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
⩥ Physics. Answer: involves the search for relationships between matter
and energy
⩥ Steps for the scientific method. Answer: 1.) Identify the Problem
2.) Gather Information
3.) Form a Hypothesis
4.) Expand the Hypothesis
5.) Test the Hypothesis
6.) Accept, Reject or Modify the Hypothesis
⩥ What does a good hypothesis need to be?. Answer: Plausible and
testable
⩥ independent variable. Answer: the physical quantity that is
manipulated
⩥ dependent variable. Answer: any other physical quantity that will be
observed during the experiment but that is not directly manipulated
,⩥ control. Answer: a physical quantity that remains constant during the
experiment
⩥ scientific law. Answer: generalized rule used to explain observations
of the natural world
⩥ scientific theory. Answer: an explanation for patterns in nature that is
supported by scientific evidence and verified multiple times by various
groups of researchers
⩥ Natural philosophy. Answer: the study of nature. This field
encompassed several scientific fields including astronomy, biology,
chemistry, physics, mathematics, and medicine.
⩥ Classical physics. Answer: the branch of physics that was discovered
during the Renaissance, works in these settings: Objects must be moving
at speeds less than about 1% of the speed of light (3 x 106 m/s)
Objects must be able to be seen with a microscope or larger
Only weak gravitational fields, like that of the Earth, can be involved.
⩥ Modern physics. Answer: consists of the two revolutionary theories of
relativity and quantum mechanics
⩥ physical quantity. Answer: a property of an object that can be
measured (distance, mass, time, force, velocity, and acceleration)
,⩥ fundamental units. Answer: 1.) the meter (m), which measures
length2.) the kilogram (kg), which measures mass3.) the second (s),
which measures time4.) the Ampere (a), which measures electric
current5.) the mole (mol), which measures the amount of a substance6.)
the candela (cd), which measures brightness7.) the Kelvin (K), which
measures temperature
⩥ derived units. Answer: a combination of more than one fundamental
unit
⩥ accuracy. Answer: the closeness of a measurement to the correct value
of that measurement.
⩥ precision. Answer: the agreement of several measurements among
each other
⩥ factors contributing to uncertainty in a measurement. Answer:
Limitations of the measuring device
The skill of the person making the measurement,
Irregularities in the object being measured,
Any other factors that affect the outcome (highly dependent on the
situation)
, ⩥ absolute uncertainty. Answer: absolute value of the difference
between the accepted value and the measurement that is furthest away
from that accepted value.
⩥ Percent uncertainty. Answer: the absolute uncertainty divided by the
accepted value times 100%.
⩥ deci (d). Answer: 10^-1
⩥ centi (c). Answer: 10^-2
⩥ milli (m). Answer: 10^-3
⩥ micro (u). Answer: 10^-6
⩥ nano (n). Answer: 10^-9
⩥ hecto (h). Answer: 10^2
⩥ kilo (k). Answer: 10^3
⩥ mega (M). Answer: 10^6
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
⩥ Physics. Answer: involves the search for relationships between matter
and energy
⩥ Steps for the scientific method. Answer: 1.) Identify the Problem
2.) Gather Information
3.) Form a Hypothesis
4.) Expand the Hypothesis
5.) Test the Hypothesis
6.) Accept, Reject or Modify the Hypothesis
⩥ What does a good hypothesis need to be?. Answer: Plausible and
testable
⩥ independent variable. Answer: the physical quantity that is
manipulated
⩥ dependent variable. Answer: any other physical quantity that will be
observed during the experiment but that is not directly manipulated
,⩥ control. Answer: a physical quantity that remains constant during the
experiment
⩥ scientific law. Answer: generalized rule used to explain observations
of the natural world
⩥ scientific theory. Answer: an explanation for patterns in nature that is
supported by scientific evidence and verified multiple times by various
groups of researchers
⩥ Natural philosophy. Answer: the study of nature. This field
encompassed several scientific fields including astronomy, biology,
chemistry, physics, mathematics, and medicine.
⩥ Classical physics. Answer: the branch of physics that was discovered
during the Renaissance, works in these settings: Objects must be moving
at speeds less than about 1% of the speed of light (3 x 106 m/s)
Objects must be able to be seen with a microscope or larger
Only weak gravitational fields, like that of the Earth, can be involved.
⩥ Modern physics. Answer: consists of the two revolutionary theories of
relativity and quantum mechanics
⩥ physical quantity. Answer: a property of an object that can be
measured (distance, mass, time, force, velocity, and acceleration)
,⩥ fundamental units. Answer: 1.) the meter (m), which measures
length2.) the kilogram (kg), which measures mass3.) the second (s),
which measures time4.) the Ampere (a), which measures electric
current5.) the mole (mol), which measures the amount of a substance6.)
the candela (cd), which measures brightness7.) the Kelvin (K), which
measures temperature
⩥ derived units. Answer: a combination of more than one fundamental
unit
⩥ accuracy. Answer: the closeness of a measurement to the correct value
of that measurement.
⩥ precision. Answer: the agreement of several measurements among
each other
⩥ factors contributing to uncertainty in a measurement. Answer:
Limitations of the measuring device
The skill of the person making the measurement,
Irregularities in the object being measured,
Any other factors that affect the outcome (highly dependent on the
situation)
, ⩥ absolute uncertainty. Answer: absolute value of the difference
between the accepted value and the measurement that is furthest away
from that accepted value.
⩥ Percent uncertainty. Answer: the absolute uncertainty divided by the
accepted value times 100%.
⩥ deci (d). Answer: 10^-1
⩥ centi (c). Answer: 10^-2
⩥ milli (m). Answer: 10^-3
⩥ micro (u). Answer: 10^-6
⩥ nano (n). Answer: 10^-9
⩥ hecto (h). Answer: 10^2
⩥ kilo (k). Answer: 10^3
⩥ mega (M). Answer: 10^6
