Introduction to Philosophical Activity Practice Quiz (10 questions)

1. Philosophical problems differ from empirical scientific and mathematical problems because:

A. Formal proof is the primary method for resolving philosophical problems.

B. Philosophical inquiry relies mainly on thought and argument rather than observation.

C. Critical discussion and argument are central approaches to philosophical problems.

D. Observation and experience do not settle philosophical problems as they do empirical ones.

E. Mathematical problems are distinguished by being settled through formal proof.

Answer: (B), (C), (D), (E)

Explanation

Philosophers primarily use critical discussion and argument; empirical problems rely on observation and experience, while mathematical problems are settled by formal proof. Formal proof is therefore not the primary method for philosophical problems.

2. Which statements characterize philosophy as an investigative activity?

A. It resolves fundamental questions about reality through controlled experiments.

B. It examines basic problems concerning what can be known and valued.

C. It investigates fundamental questions about reality, knowledge, and value.

D. It explores fundamental issues rather than isolated technical measurements.

E. It investigates questions about the nature of reality and value.

Answer: (B), (C), (D), (E)

Explanation

Philosophy investigates fundamental problems involving reality, knowledge, and value, as the correct statements describe. Controlled experiments are not its defining way of resolving philosophical problems.

3. Which pairings correctly associate philosophical disciplines with their areas of concern?

A. Metaphysics is the discipline concerned with correct action.

B. Axiology investigates questions about values.

C. Ethics concerns questions about correct action.

D. Metaphysics examines questions concerning the nature of reality.

E. Epistemology is concerned with values and their assessment.

Answer: (B), (C), (D)

Explanation

Metaphysics concerns reality, axiology concerns values, and ethics concerns correct action. Epistemology addresses knowledge, not values, and correct action falls under ethics rather than metaphysics.

4. What is an explicit definition of a concept?

A. A statement giving necessary and sufficient conditions for applying the concept correctly

B. A proposal explaining why the concept is useful for solving a problem

C. A description of several common features without requiring completeness

D. A list of examples that illustrate how the concept is commonly used

Answer: (A)

Explanation

An explicit definition identifies the properties that everything covered by a concept shares and specifies necessary and sufficient conditions for its correct application. A characterization may mention shared features, but it does not provide a rigorous, exhaustive definition.

5. Which example illustrates how one ambiguous term can express different concepts?

A. “Bank” can refer to a seat or a financial institution.

B. An imperative sentence can express a request rather than a proposition.

C. A declarative sentence can express a proposition that is true or false.

D. “Porta-minas” and “lapiseira” can express the same concept.

Answer: (A)

Explanation

The term “bank” is ambiguous because it can express the concept of a seat or that of a financial institution. The two terms “porta-minas” and “lapiseira” instead illustrate different words expressing the same concept.

6. What role does the word “only” play in a conditional proposition such as “P only if Q”?

A. It attributes a predicate to a subject without a condition.

B. It indicates that Q is necessary for P to be true.

C. It indicates that Q is sufficient for P to be true.

D. It links two propositions that entail each other.

Answer: (B)

Explanation

In “P only if Q,” Q must be true whenever P is true, so Q is a necessary condition for P. By contrast, “if P, then Q” makes P sufficient for Q, not Q sufficient for P.

7. How does consistency differ from explanatory power when assessing a philosophical theory?

A. Consistency asks whether it avoids unresolved problems, while explanatory power concerns whether its arguments have true premises.

B. Consistency asks whether its claims are more plausible than alternatives, while explanatory power concerns whether they can all be true together.

C. Consistency asks whether it answers the intended problem, while explanatory power concerns whether it avoids unnecessary complications.

D. Consistency asks whether its claims can all be true together, while explanatory power concerns how well it accounts for the problem.

Answer: (D)

Explanation

Consistency concerns whether all the theory’s propositions could be true simultaneously, whereas explanatory power concerns how effectively the theory explains what it is meant to address. Plausibility relative to alternatives is a separate assessment criterion, not the definition of consistency.

8. What can result when a theory’s propositions are inconsistent?

A. They become less plausible than alternatives even if they can all be true.

B. They fail to address the problem the theory was intended to solve.

C. They cannot all be true at the same time, so at least one must be false.

D. They become less explanatory because they introduce too many complications.

Answer: (C)

Explanation

Inconsistency means that the propositions in a set cannot all be true simultaneously, which entails that at least one is false. A theory’s explanatory power and relevance are separate assessment criteria, not consequences that define inconsistency.

9. A student argues that the ground is wet, so it must have rained. How should this argument be assessed?

A. It is unsound because its premises are necessarily false.

B. It is invalid because another cause could have made the ground wet.

C. It is valid because wet ground follows from rain.

D. It is cogent because its premise is more plausible than its conclusion.

Answer: (B)

Explanation

The premises do not rule out other causes of wet ground, so the conclusion could be false while the premise is true. The related inference from rain to wet ground is valid, but reversing that conditional reasoning is not.

10. What distinguishes a formal fallacy from an informal fallacy?

A. A formal fallacy relies on unclear wording, whereas an informal fallacy reverses the truth value of a claim.

B. A formal fallacy results from invalid logical form, whereas an informal fallacy fails for a reason other than form.

C. A formal fallacy uses false premises, whereas an informal fallacy has a conclusion that is false.

D. A formal fallacy lacks supporting premises, whereas an informal fallacy has premises that repeat its conclusion.

Answer: (B)

Explanation

A formal fallacy occurs when an argument appears valid but its logical form is invalid; an informal fallacy fails for another reason despite seeming sound and cogent. False premises can make an argument unsound, but that fact alone does not distinguish a formal fallacy.