Complete Study Guide with Practice Questions &
Verified Answers [2025 Edition]
physics - ANSWER: the study of forces, energy, motion
Chemistry - ANSWER: study of atoms and molecules, their structures, and
their interactions to form various substances.
Earth Science - ANSWER: Earth's structure and composition, as well as the
processes that change Earth, such as volcanic and seismic activity.
astronomy - ANSWER: The study of the moon, stars, and other objects in
space
Science - ANSWER: An organized way of gathering and analyzing evidence
about the natural world.
Precision - ANSWER: a measure of how close a series of measurements
are to one another
SI - ANSWER: is a scientific method of expressing the magnitudes or
quantities of important natural phenomena. There are seven base units in
the system, from which other units are derived. Universal for comparing
data.
physical science - ANSWER: the sciences concerned with the study of
inanimate natural objects, including physics, chemistry, astronomy, and
related subjects.
life science - ANSWER: the study of living things
controlled experiment - ANSWER: An experiment in which only one
variable is manipulated at a time. Or a condition that is being held constant
independent variable - ANSWER: what is being changed
dependent variable - ANSWER: what is being measured
control - ANSWER: In an experiment, the standard that is used for
comparison
Observational experiment or study - ANSWER: studies attempt to
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,C165 – Integrated Physical Science (WGU) |
Complete Study Guide with Practice Questions &
Verified Answers [2025 Edition]
field study - ANSWER: a research investigation carried out in a naturally
occurring setting
laboratory study - ANSWER: Research done in a laboratory
Physical Model - ANSWER: A physical representation of an object.
Prototypes and appearance models are physical models.
conceptual model - ANSWER: a verbal or graphical explanation for how a
system works or is organized
mathematical model - ANSWER: one or more equations that represent the
way a system or process works
Hypothesis - ANSWER: A testable prediction, often implied by a theory
Theory - ANSWER: A hypothesis that has been tested with a significant
amount of data. Explains why something happened.
Law - ANSWER: A law in science is a generalized rule to explain a body of
observations in the form of a verbal or mathematical statement. Scientific
laws (also known as natural laws) imply a cause and effect between the
observed elements and must always apply under the same conditions.
Explains how it happened not why.
Observation - ANSWER: Information obtained through the senses.
evidence - ANSWER: proof
Data - ANSWER: Facts and statistics collected together for reference or
analysis
Big Bang Theory - ANSWER: Cosmological model that explains the sudden
development of the universe through expansion from a hot, dense state.
plate tectonics - ANSWER: A theory stating that the earth's surface is
broken into plates that move.
atomic theory - ANSWER: a theory that states that all matter is composed
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gram - ANSWER: a metric unit of mass equal to one thousandth of a
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, C165 – Integrated Physical Science (WGU) |
Complete Study Guide with Practice Questions &
Verified Answers [2025 Edition]
meter - ANSWER: The meter is the basic unit of length in the SI system of
units. ... The previous definition of the meter was one ten-millionth of the
distance from the geographic north pole to the equator, measured over the
earth's surface in a circle running through Paris, France.
second - ANSWER: SI base unit for time
Celsius - ANSWER: Metric unit for measuring temperature; On this scale
water freezes at zero and boils at 100.
Kelvin - ANSWER: The SI base unit of temperature
liter - ANSWER: Basic unit of volume in the metric system
Metric Prefixes - ANSWER: Giga, Mega, Kilo, deci, centi, milli, micro, nano
derived unit - ANSWER: A unit defined by a combination of base units
direct relationship - ANSWER: a relationship in which one variable
increases with an increase in another variable
inverse relationship - ANSWER: a relationship in which one variable
decreases when another variable increases
Speed - ANSWER: The distance an object travels per unit of time
Velocity - ANSWER: Speed in a given direction
Acceleration - ANSWER: the rate at which velocity changes over time; an
object accelerates if its speed, direction, or both change
distance - ANSWER: The length of a path between two points
Displacement - ANSWER: Distance and direction of an object's change in
position from the starting point.
Balance force - ANSWER: Equal forces acting on one object in opposite
direction. These forces then give a 0 net force, causing the object to stay in
place.
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unequal force - ANSWER: unbalanced forces cause a change in motion;
speed. and/or direction. When two forces act in the same direction on an ^%#$%&*
object, the net force is. equal to the sum of the two forces. When two
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