SAFRS Firefighter Aptitude key terms

The central point an author wants the reader to understand after finishing a passage. It is broader than any single detail and is often stated in a topic sentence or must be inferred from the whole text.

A specific fact, example, or reason inside a passage that explains, proves, or strengthens the main idea. Details answer who, what, when, where, or why and are narrower than the main point.

A conclusion a reader draws by combining stated information with general knowledge and logic. An inference is not printed directly in the text but must be strongly supported by it.

A word, phrase, or sentence near an unfamiliar term that hints at its meaning. Readers use surrounding examples, contrasts, and definitions to figure out unknown vocabulary without a dictionary.

The order in which actions or incidents happen in a passage. Signal words such as first, then, after, and finally help readers track chronology and understand cause and effect.

A relationship in which one event makes another event happen. The cause explains why something occurred; the effect is the result, often signaled by words like because, therefore, and as a result.

A short reading selection about equipment, procedures, or safety rules, often using specialized terms. Readers must extract exact instructions and distinguish required actions from optional ones.

A sentence, usually near the start of a paragraph, that announces what the paragraph is about. It guides the reader and is often followed by details that develop or support it.

A sentence structure in which the subject performs the action, as in 'The crew extinguished the fire.' Active voice is direct, clear, and usually preferred in reports and instructions.

A sentence structure in which the subject receives the action, as in 'The fire was extinguished by the crew.' It is useful when the doer is unknown but can make writing vague or wordy.

The rule that a verb must match its subject in number. A singular subject takes a singular verb, and a plural subject takes a plural verb, even when words sit between them.

The set of rules governing how words are arranged and inflected to form correct sentences. Good grammar keeps written messages accurate and easy for others to understand.

Marks such as periods, commas, and colons that organize written text and clarify meaning. Correct punctuation prevents misreading, especially in lists, times, and addresses.

The quality of writing that makes meaning easy to grasp on a first reading. Clear writing uses plain words, logical order, and enough detail without unnecessary jargon or ambiguity.

Expressing an idea in the fewest words needed without losing meaning. Concise writing removes repetition and filler so busy readers can act on the message quickly.

A factual written record of an emergency response, including time, location, actions taken, and people involved. Reports must be accurate, objective, and free of personal opinion or blame.

Writing that states facts without inserting personal feelings, judgments, or bias. An objective tone uses neutral wording and verifiable observations, which is essential in official records.

Arranging information in the order events occurred, from earliest to latest. It helps readers follow a sequence of actions and is standard in incident narratives and procedures.

A comparison of two quantities showing how many times one contains the other, often written as a fraction or with a colon. Ratios are used for mixtures, staffing, and gear settings.

An equation stating that two ratios are equal. Proportions allow you to solve for an unknown value when scaling quantities up or down, such as hose pressure or water volume.

A rate expressed for exactly one unit of a quantity, such as gallons per minute or miles per hour. Unit rates make different quantities easy to compare and calculate.

A number expressed as a part of one hundred. Percentages describe portions of a whole and are computed by dividing the part by the total and multiplying by one hundred.

The sum of a set of values divided by the number of values. Averages summarize typical performance, such as average response time across several calls.

The total distance around the outside edge of a shape. Firefighters use perimeter to estimate the length of hose or barrier needed to enclose an area.

The amount of surface a shape covers, measured in square units. Area helps estimate how much ground a fire covers or how much material is needed to cover a surface.

The amount of three-dimensional space an object or container occupies, measured in cubic units. Volume calculations determine tank capacity and the amount of water available.

Force applied over a given area, often measured in pounds per square inch. In firefighting, pressure determines how far and how forcefully water leaves a nozzle.

The volume of fluid that moves past a point in a given amount of time, such as gallons per minute. Flow rate depends on nozzle size and pressure.

A simple machine made of a rigid bar that pivots on a fixed point called a fulcrum. Levers multiply force or increase speed, as with a pry bar or a crowbar.

The fixed pivot point on which a lever turns. Moving the fulcrum changes how much force is needed and how far the load moves.

The ratio of the force a machine produces to the force applied to it. A higher mechanical advantage means less effort is needed to move a load.

A simple machine consisting of a wheel with a rope or cable running over it. Pulleys change the direction of force or reduce effort when lifting heavy loads.

The relationship between the number of teeth on two meshing gears. It determines how turning speed and torque change from the driving gear to the driven gear.

A twisting or turning force applied at a distance from an axis. Tightening a bolt with a wrench depends on how far from the bolt the force is applied.

A force that resists motion when two surfaces slide or rub against each other. Friction generates heat and wear, and it can be reduced with lubricants or rollers.

A scaled drawing showing rooms, walls, doors, and windows as seen from above. Firefighters use floor plans to plan routes and locate exits and occupants.

The relationship between a distance on a drawing and the real distance it represents. A scale of one inch equals ten feet means every inch on paper stands for ten real feet.

Knowing how a drawing, map, or diagram aligns with real directions and positions. Correct orientation prevents confusion about which side is north or which door leads outside.

Turning a shape around a fixed point without changing its size. Recognizing rotated objects helps candidates match tools and parts shown from different angles.

A mirror image of a shape flipped across a line. Distinguishing reflections from rotations is important when matching diagrams and identifying parts.

The ability to evaluate a workplace scenario and choose the most appropriate action. Good judgment balances safety, policy, teamwork, and respect for others.

The formal line of authority from higher to lower ranks in an organization. Following it means reporting problems to the immediate supervisor before going higher.

Cooperating with others toward a shared goal by sharing tasks, information, and support. Effective teamwork relies on communication, reliability, and respect for each member's role.

The process of addressing disagreement calmly so that a workable solution is reached. It involves listening, identifying the real issue, and agreeing on next steps.

Drawing a specific conclusion from general rules or premises that are assumed true. If all crew members wear helmets and Ana is on the crew, she wears a helmet.

Forming a general rule from specific observations or patterns. It produces likely rather than certain conclusions and is common when spotting trends in data.

Identifying a repeating rule or trend in a series of numbers, shapes, or events. Recognizing the pattern lets you predict what comes next.

Using structured thinking to evaluate whether conclusions follow from given information. It includes spotting contradictions and separating valid arguments from flawed ones.

The act of noticing and mentally recording details in a scene, such as objects, people, and positions. Careful observation is the foundation of accurate memory and reporting.

The ability to retrieve previously observed or learned information without looking at it. Recall improves with focused attention and organized practice.

The habit of noticing small but important features that others might overlook. It reduces errors in reading instructions, recording data, and inspecting equipment.

Mentally picturing objects, layouts, or movements based on given information. It helps candidates answer questions about how things look or work when they cannot see them directly.

The ability to understand and mentally manipulate shapes, positions, and relationships in space. It is used to judge distances, fit objects together, and read diagrams.