WGU C165 OA EXAM Q&A 2026 STUDY
GUIDE SOLVED QUESTIONS GRADED A+
◉ chemistry. Answer: study of atoms and molecules, their structure, and
interactions to form various substances
◉ earth science. Answer: The scientific study of earth and the universe
around it
◉ physical model. Answer: A physical representation of an object.
Prototypes and appearance models are physical models.
◉ conceptual models. Answer: used to visualize things that can not be
seen, like atoms
◉ mathematical models. Answer: treat physical objects using
mathematical methods
◉ 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 supported by scientific evidence
◉ theory. Answer: well-tested explanation that unifies a broad range of
observations
◉ science best used to study how light from a candle travels through
space. Answer: earth science
◉ science best used to study the composition of the earth. Answer: earth
science
◉ physics topic MOST important in chemistry. Answer: how atoms
bond to each other due to electric attraction of oppositely charged
electrons and nuclei
◉ science that studies photosynthetic bacteria. Answer: life science
◉ Mega. Answer: M
M^6
1,000,000
, ◉ Kilo. Answer: k
1,000
10^3
◉ deci. Answer: d
0.1
10^-1
◉ centi. Answer: c
0.01
10^-2
◉ milli. Answer: m
0.001
10^-3
◉ micro. Answer: u
0.000001
10^-6
◉ nano. Answer: n
0.000000001
GUIDE SOLVED QUESTIONS GRADED A+
◉ chemistry. Answer: study of atoms and molecules, their structure, and
interactions to form various substances
◉ earth science. Answer: The scientific study of earth and the universe
around it
◉ physical model. Answer: A physical representation of an object.
Prototypes and appearance models are physical models.
◉ conceptual models. Answer: used to visualize things that can not be
seen, like atoms
◉ mathematical models. Answer: treat physical objects using
mathematical methods
◉ 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 supported by scientific evidence
◉ theory. Answer: well-tested explanation that unifies a broad range of
observations
◉ science best used to study how light from a candle travels through
space. Answer: earth science
◉ science best used to study the composition of the earth. Answer: earth
science
◉ physics topic MOST important in chemistry. Answer: how atoms
bond to each other due to electric attraction of oppositely charged
electrons and nuclei
◉ science that studies photosynthetic bacteria. Answer: life science
◉ Mega. Answer: M
M^6
1,000,000
, ◉ Kilo. Answer: k
1,000
10^3
◉ deci. Answer: d
0.1
10^-1
◉ centi. Answer: c
0.01
10^-2
◉ milli. Answer: m
0.001
10^-3
◉ micro. Answer: u
0.000001
10^-6
◉ nano. Answer: n
0.000000001
