WGU C165 INTEGRATED PHYSICAL SCIENCES
EXAM 2026 UPDATED PRACTICE QUESTIONS
AND SOLUTIONS
◉ Chemistry. Answer: The study of atoms and molecules, their
structures, and their interactions to form substances
◉ Earth science. Answer: The study of the Earth's structure and
composition, and processes that change Earth
◉ essential attributes of science. Answer: Studies the natural world
Uses testable ideas
Relies on data from observations/experiments
Presented for evaluation by other scientists
Leads to further questions/research
◉ variables. Answer: The changing quantities in an experiment
◉ independent variable. Answer: What you change in an experiment
on purpose
,◉ dependent variable. Answer: The variable that changes because of
an independent variable
◉ control variable. Answer: The variable(s) you don't want to study,
need to be either eliminated or kept constant
◉ observational study. Answer: When systems are observed as they
appear in nature, researchers do not attempt to change them
◉ physical model. Answer: A model of a physical phenomenon, such
as a planetary system
◉ conceptual model. Answer: A model used to visualize things that
cannot be seen, such as atoms
◉ mathematical model. Answer: A model that treats physical
objects/phenomena using mathematical methods
◉ computer model. Answer: A detailed, complex model calculated
by a computer
◉ principle of falsification. Answer: Principle that only falsifiable
statements can be subject to scientific inquiry
, ◉ hypothesis. Answer: A testable statement about how something in
nature works
◉ law. Answer: A concise statement that is supported by scientific
evidence and repeated experiments, describes a widespread pattern
in nature (what)
◉ theory. Answer: A statement that explains a wide range of
observations, supported by a large body of scientific evidence
(how/why)
◉ meter. Answer: Base unit of length
◉ kilogram. Answer: Base unit of mass
◉ second. Answer: Base unit of time
◉ kelvin. Answer: Base unit of temperature
◉ Derived units. Answer: What is produced when the base
units/quantities are combined
◉ Speed. Answer: The name for the distance traveled divided by an
interval of time
EXAM 2026 UPDATED PRACTICE QUESTIONS
AND SOLUTIONS
◉ Chemistry. Answer: The study of atoms and molecules, their
structures, and their interactions to form substances
◉ Earth science. Answer: The study of the Earth's structure and
composition, and processes that change Earth
◉ essential attributes of science. Answer: Studies the natural world
Uses testable ideas
Relies on data from observations/experiments
Presented for evaluation by other scientists
Leads to further questions/research
◉ variables. Answer: The changing quantities in an experiment
◉ independent variable. Answer: What you change in an experiment
on purpose
,◉ dependent variable. Answer: The variable that changes because of
an independent variable
◉ control variable. Answer: The variable(s) you don't want to study,
need to be either eliminated or kept constant
◉ observational study. Answer: When systems are observed as they
appear in nature, researchers do not attempt to change them
◉ physical model. Answer: A model of a physical phenomenon, such
as a planetary system
◉ conceptual model. Answer: A model used to visualize things that
cannot be seen, such as atoms
◉ mathematical model. Answer: A model that treats physical
objects/phenomena using mathematical methods
◉ computer model. Answer: A detailed, complex model calculated
by a computer
◉ principle of falsification. Answer: Principle that only falsifiable
statements can be subject to scientific inquiry
, ◉ hypothesis. Answer: A testable statement about how something in
nature works
◉ law. Answer: A concise statement that is supported by scientific
evidence and repeated experiments, describes a widespread pattern
in nature (what)
◉ theory. Answer: A statement that explains a wide range of
observations, supported by a large body of scientific evidence
(how/why)
◉ meter. Answer: Base unit of length
◉ kilogram. Answer: Base unit of mass
◉ second. Answer: Base unit of time
◉ kelvin. Answer: Base unit of temperature
◉ Derived units. Answer: What is produced when the base
units/quantities are combined
◉ Speed. Answer: The name for the distance traveled divided by an
interval of time
