WGU C165 OA EXAM INTEGRATED PHYSICAL SCIENCES OA ACTUAL EXAM QUESTION
BANK 35 QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+
1. Which question could be answered with a controlled experiment?ANSWER Does ice melt faster in an empty
glass or in a glass full of water?
@#$%^&*()_+{_)o(i*uyt^re#$%^&*()_+
2. Which topic would be appropriate for a controlled experiment?ANSWER Determining how fast different
chemical pollutants dissolve in water
3. Which question requires a controlled experiment to answer?ANSWER Which type of rock contains the most
calcium?
4. 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?ANSWER Law
5. If there is evidence that supports an explanation, it is called what?ANSWER Theory
6. 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?ANSWER Hypothesis
7. Why was the shrinking Earth idea replaced by the theory of plate tectonics?-
ANSWER Plate tectonics explained observations about Earth that the shrinking Earth idea could not explain.
8. In 2011, a scientist analyzed 100 NASA-space-mission photographs of Valles Marineris on Mars. The scientist
found that Valles Marineris showed features found only on Earth where major tectonic plates divide. What would
be the appropriate response of scientists to this information?ANSWER Carry out further research to gain more
understanding of possible plate tectonics on Mars
9. Volcanos form along plate boundaries because of rising magma. New data mapping the ocean floor reveals
thousands of small volcanoes. Some of
The seamounts are in lines that could correspond to past or present plate boundaries, but many are not aligned in
this way. How should scientists appropriately respond?ANSWER Carry out more research to understand better how
the seamounts form
10. Scientists thought they understood how ozone breaks down in the stratos- phere, creating ozone holes.
However, new data show significantly lower reaction rates than can be explained by the long-held model. What is
the appropriate scientific approach for dealing with this contradiction?ANSWER Conduct additional experiments
to confirm the new data
11. For almost 1500 years, scientists have accepted Ptolemy's geocentric planetary model, which suggests that
the sun revolves around Earth. By the eighteenth century, most scientists supported a heliocentric model that
Suggests that Earth revolves around the sun.What is an appropriate scientific
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BANK 35 QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+
1. Which question could be answered with a controlled experiment?ANSWER Does ice melt faster in an empty
glass or in a glass full of water?
@#$%^&*()_+{_)o(i*uyt^re#$%^&*()_+
2. Which topic would be appropriate for a controlled experiment?ANSWER Determining how fast different
chemical pollutants dissolve in water
3. Which question requires a controlled experiment to answer?ANSWER Which type of rock contains the most
calcium?
4. 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?ANSWER Law
5. If there is evidence that supports an explanation, it is called what?ANSWER Theory
6. 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?ANSWER Hypothesis
7. Why was the shrinking Earth idea replaced by the theory of plate tectonics?-
ANSWER Plate tectonics explained observations about Earth that the shrinking Earth idea could not explain.
8. In 2011, a scientist analyzed 100 NASA-space-mission photographs of Valles Marineris on Mars. The scientist
found that Valles Marineris showed features found only on Earth where major tectonic plates divide. What would
be the appropriate response of scientists to this information?ANSWER Carry out further research to gain more
understanding of possible plate tectonics on Mars
9. Volcanos form along plate boundaries because of rising magma. New data mapping the ocean floor reveals
thousands of small volcanoes. Some of
The seamounts are in lines that could correspond to past or present plate boundaries, but many are not aligned in
this way. How should scientists appropriately respond?ANSWER Carry out more research to understand better how
the seamounts form
10. Scientists thought they understood how ozone breaks down in the stratos- phere, creating ozone holes.
However, new data show significantly lower reaction rates than can be explained by the long-held model. What is
the appropriate scientific approach for dealing with this contradiction?ANSWER Conduct additional experiments
to confirm the new data
11. For almost 1500 years, scientists have accepted Ptolemy's geocentric planetary model, which suggests that
the sun revolves around Earth. By the eighteenth century, most scientists supported a heliocentric model that
Suggests that Earth revolves around the sun.What is an appropriate scientific
1/3
