10.1 Physical Science Overview

10.1 Physical Science Overview

On the Air Force Officer Qualifying Test (AFOQT) Form T, the science subtest is officially named Physical Science — not "General Science." Many study lists carry the older label, but the operational subtest you will face has 20 questions and a 10-minute limit, giving you exactly 30 seconds per item. That pace is the single most important logistics fact in this chapter: you do not have time to derive answers, so factual recall must be automatic.

What the subtest covers

The official description is high-school-level physical science built around three pillars: force relationships, physical laws, and simple machines. In practice the question pool ranges wider than that summary suggests, drawing from mechanics, energy, the electromagnetic spectrum, thermodynamics, electricity and magnetism, basic chemistry (atomic structure, the periodic table, states of matter), and earth/space science (the atmosphere, the solar system, geology).

Why scoring context changes your strategy

The AFOQT produces six composite percentile scores (1-99): Pilot, Combat Systems Officer (CSO), Air Battle Manager (ABM), Academic Aptitude, Verbal, and Quantitative. Physical Science contributes only to Academic Aptitude. If you are a pilot applicant, your Pilot composite (Math Knowledge, Table Reading, Instrument Comprehension, Aviation Information) is what gates a slot — so do not over-invest months in Physical Science at the expense of those subtests. But every commissioning applicant still wants a strong overall record, and a weak science score drags Academic Aptitude down.

Treat Physical Science as a high-efficiency target: a few hours of formula and constant memorization can move it several percentile points.

How questions are phrased

Most items are direct knowledge checks: "What is the SI unit of force?" or "Which planet is closest to the Sun?" A smaller fraction are one-step applications such as "A 2-kg object accelerates at 3 m/s²; what net force acts on it?" — solvable in seconds if you know F = ma. Almost nothing requires multi-step algebra; the test rewards breadth of recall over depth. Because there is no penalty for guessing, never leave a Physical Science item blank: eliminate what you can, then commit.

High-yield study map

• Mechanics & forces — Newton's three laws, F = ma, weight vs mass, friction.
• Energy & power — KE = ½mv², PE = mgh, work = F×d, units (joule, watt).
• Waves & EM spectrum — ordering by wavelength, sound vs light speed.
• Heat & states of matter — conduction/convection/radiation, phase changes.
• Electricity — Ohm's law V = IR, series vs parallel basics.
• Chemistry — atomic parts, periodic-table trends, common elements.
• Earth/space — atmosphere layers, planet order, density vs altitude.

Build a one-page cheat sheet of these formulas and constants, recite it daily, and you will clear most of the 20 items on recall alone.

Where Physical Science sits among the 12 subtests

Form T contains 12 subtests and 516 total questions over roughly three hours and twenty minutes of timed work. The cognitive subtests are Verbal Analogies (25 in 8 min), Arithmetic Reasoning (25 in 29 min), Word Knowledge (25 in 5 min), Math Knowledge (25 in 22 min), Reading Comprehension (25 in 24 min), Situational Judgment (16 in 35 min), Physical Science (20 in 10 min), Table Reading (40 in 7 min), Instrument Comprehension (25 in 5 min), Block Counting (30 in 5 min), and Aviation Information (20 in 8 min), plus the 240-item Self-Description Inventory personality measure that is not scored for ability.

Physical Science is one of the shorter subtests, and at 30 seconds per item it is among the fastest-paced — second only to Word Knowledge and Block Counting.

Realistic expectations and retakes

There is no single nationwide "pass/fail" line for Physical Science; what matters is how it rolls into the Academic Aptitude composite percentile. You may take the AFOQT a limited number of times (historically up to three lifetime attempts, with a mandatory waiting period of about 150 days between sittings), so each sitting counts. Because Physical Science is short and memorization-driven, it is one of the highest return-on-effort subtests to polish before a retake: unlike Reading Comprehension or Situational Judgment, which improve slowly, science facts can be locked in over a weekend.

Treat this chapter as a fact bank: the more of the formulas, constants, and ordered lists you can recall instantly, the more of your scarce 10 minutes you preserve for the two or three genuinely tricky items. The test is delivered as a paper-and-pencil or computer-based form through approved military testing centers and Pearson VUE; you cannot bring a calculator into the Physical Science section, so any arithmetic must be done by hand on scratch paper or in your head, another reason the questions stay to single-step computations.