, WGU C165 Integrated Physical Sciences Exam
Questions and Answers
1. A mathematical model is used to predict the trajectory of a bullet fired
from a gun. Which discipline of physical science is used to develop this
model✔✔✔ Physics
2. An environmental scientist monitors pollutants in a lake. Which two disci-
plines of physical science does this scientist use? Choose 2 answers: Chem-
istry
Earth Science
3. Which study involves both Earth science and physics✔✔✔
Calculating howmuch energy is associated with a hurricane
4. Which question could be answered with a controlled
experiment✔✔✔ Doesice melt faster in an empty glass or in a glass full of
water?
,5. Which topic would be appropriate for a controlled experiment✔✔✔
Determin-ing how fast different chemical pollutants dissolve in water
6. Sir Isaac Newton discovered that the force of gravity between two masses
increases if the masses increase, and decreases if the distance between the
masses increases. No experiments have ever contradicted this relationship.
Which type of scientific statement is this✔✔✔ Law
7. The well-accepted scientific explanation for many characteristics of
Earth's crust states that the crust is broken into several large plates. These
plates move slowly over the mantle below because of convection and other
processes. Earthquakes and volcanoes are most common at places where
the plates interact. Evidence from physics, chemistry, and geology supports
this explanation. Which type of scientific idea is this explanation an example
of✔✔✔ Theory
8. Which question requires a controlled experiment to answer✔✔✔
Which typeof rock contains the most calcium?
, 9. A student proposes that sugar will dissolve faster in rubbing alcohol than
in water. The student reasons that sugar and rubbing alcohol both contain
carbon so they will mix more easily. Which type of scientific idea is the
student's proposal an example of✔✔✔ Hypothesis
10. Why was the shrinking Earth idea replaced by the theory of plate tecton-
ics✔✔✔ Plate tectonics explained observations about Earth that the
shrinking Earthidea could not explain.
11. Astronomers have long accepted that plate tectonics exists nowhere
in our solar system except on Earth. In 2011, a scientist analyzed 100
NASA-space-mission photographs of Valles Marineris on Mars, the longest
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