Grade 12 · Reading & language

Evaluate the logic of an analogy

Map a relevant relationship between two situations and identify where an analogy stops supporting a conclusion.

8 authored questions + worked example

Worked example

A key permits access through a lock. A password permits access to an account. The analogy compares the access-enabling roles.

Which item corresponds to the key?

Answer & why

Answer: The password

The key and password perform the stated access-enabling role.

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All questions

All 8 authored questions for this skill.

Question 1

Two road routes allow a town to reroute traffic when one route closes. A network diagram has two independent paths with enough spare capacity if one fails.

What feature makes the resilience analogy relevant?

  1. Both systems have the same road signs.
  2. A diagram’s color supplies extra capacity.
  3. Two paths eliminate every possible failure.
  4. An alternative path can carry the traffic when one path is unavailable.
A hint

Match the relationship, not just a shared word or appearance; an analogy can explain a structure without proving every property transfers.

Answer & why

Answer: An alternative path can carry the traffic when one path is unavailable.

The stated alternative path and spare capacity support the common rerouting mechanism.

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Question 2

A writer argues, “Plants grow when watered, and machines are also physical objects, so watering a machine will make it grow.”

What is the main weakness of the analogy?

  1. The analogy supplies experimental results for machine growth.
  2. The writer has proved all machines are plants.
  3. Being physical objects does not establish a shared biological growth mechanism.
  4. Any shared property guarantees every other property.
A hint

Match the relationship, not just a shared word or appearance; an analogy can explain a structure without proving every property transfers.

Answer & why

Answer: Being physical objects does not establish a shared biological growth mechanism.

The conclusion transfers a process without a relevant shared mechanism or evidence.

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Question 3

A key permits access through a lock. A password permits access to an account. The analogy compares the access-enabling roles.

Which item corresponds to the key?

  1. The password
  2. The account’s background color
  3. Every file in the account
  4. The user’s chair
A hint

Match the relationship, not just a shared word or appearance; an analogy can explain a structure without proving every property transfers.

Answer & why

Answer: The password

The key and password perform the stated access-enabling role.

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Question 4

A map represents selected features of a landscape; a scientific model represents selected features of a system.

Which lesson follows from the shared representation relation?

  1. A useful representation may omit details without being identical to what it represents.
  2. A model must contain every real detail at full scale.
  3. The landscape is made of the map’s paper.
  4. Every map proves a scientific model correct.
A hint

Match the relationship, not just a shared word or appearance; an analogy can explain a structure without proving every property transfers.

Answer & why

Answer: A useful representation may omit details without being identical to what it represents.

Both are selective representations; the analogy does not make them literal copies or proofs.

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Question 5

A prototype bridge is tested under stated loads before wider use. A software service is tested under stated simulated demand before wider use.

Which relation supports the analogy?

  1. Both must be made of the same material.
  2. Both use a limited test to examine performance under specified stress.
  3. A passed limited test guarantees every possible future load.
  4. Both have identical physical failure mechanisms.
A hint

Match the relationship, not just a shared word or appearance; an analogy can explain a structure without proving every property transfers.

Answer & why

Answer: Both use a limited test to examine performance under specified stress.

The relevant similarity is the testing strategy, not material identity or unlimited assurance.

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Question 6

A sieve selects particles by a stated size rule. A database filter selects records by a stated date rule.

Which relationship is shared?

  1. Each establishes that all kept items are true.
  2. Both require water.
  3. Both must select by particle size.
  4. Each keeps items according to an explicit selection criterion.
A hint

Match the relationship, not just a shared word or appearance; an analogy can explain a structure without proving every property transfers.

Answer & why

Answer: Each keeps items according to an explicit selection criterion.

The rules differ, but both sort items by a specified condition.

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Question 7

A thermometer estimates temperature from a calibrated response. A short assessment samples performance on selected tasks.

Which conclusion respects the analogy’s limit?

  1. Temperature and reading ability are the same physical quantity.
  2. A measuring device creates the property it measures.
  3. Both involve measurement, but one does not guarantee that the other measures every aspect of its target.
  4. Every assessment measures all abilities perfectly.
A hint

Match the relationship, not just a shared word or appearance; an analogy can explain a structure without proving every property transfers.

Answer & why

Answer: Both involve measurement, but one does not guarantee that the other measures every aspect of its target.

A shared measurement role does not establish identical scope, validity or completeness.

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Question 8

A library catalog helps locate books without reproducing every book. A data index helps locate records without displaying every record’s full content.

Which role is shared?

  1. Organizing access to items without being their complete content.
  2. Proving that every item’s claims are correct.
  3. Showing that no items are missing anywhere.
  4. Replacing every item with identical words.
A hint

Match the relationship, not just a shared word or appearance; an analogy can explain a structure without proving every property transfers.

Answer & why

Answer: Organizing access to items without being their complete content.

Both are aids to finding content, not guarantees of that content’s truth or completeness.

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