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Navy Sailor Test Physics Flashcards
56 question-and-answer cards covering Physics as it is examined in Navy Sailor Test. 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the Physics deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
Write the formula for pressure exerted by a liquid column at a given depth.
Pressure in a liquid P = p g h (rho g h), where p = liquid density, g = gravitational acceleration, h = depth below the surface.
State Pascal's Law (Pascal's Principle).
Pressure applied to an enclosed (confined) fluid is transmitted equally and undiminished in all directions throughout the fluid. It is the basis of the hydraulic press.
State Archimedes' Principle.
When a body is wholly or partially immersed in a fluid, it experiences an upward buoyant force (upthrust) equal to the weight of the fluid it displaces.
What is atmospheric pressure at sea level in pascals and in the common 'standard atmosphere' value?
Atmospheric pressure at sea level is about 101,325 Pa (1.013 x 10^5 Pa), equal to 1 standard atmosphere (atm), supporting a 760 mm column of mercury.
Define elasticity.
Elasticity is the property of a body by which it regains its original shape and size after the deforming force is removed.
State Hooke's Law and give its formula.
Within the elastic limit, the extension (or deformation) of a body is directly proportional to the applied force: F = k x, where k is the spring constant and x is the extension.
What is the elastic limit?
The elastic limit is the maximum stress or force beyond which a body does not return to its original shape after the deforming force is removed (it becomes permanently deformed).
Define stress and strain.
Stress is the force applied per unit cross-sectional area (stress = F/A). Strain is the ratio of change in dimension to original dimension (strain = change in length / original length); strain has no units.
Define temperature and name the three common temperature scales.
Temperature is the measure of the degree of hotness or coldness of a body (average kinetic energy of its particles). The three common scales are Celsius (C), Fahrenheit (F), and Kelvin (K).
What are the freezing and boiling points of water on the Celsius and Kelvin scales?
On Celsius: 0 C (freezing) and 100 C (boiling). On Kelvin: 273 K (freezing) and 373 K (boiling).
Give the conversion formula between Celsius and Kelvin, and between Celsius and Fahrenheit.
K = C + 273. F = (9/5)C + 32 (and C = 5/9 (F - 32)).
Define heat and explain how it differs from temperature.
Heat is a form of energy that flows from a hotter body to a colder body due to a temperature difference (measured in joules). Temperature measures the degree of hotness and determines the direction of heat flow.
Define specific heat capacity and give its formula.
Specific heat capacity is the heat required to raise the temperature of 1 kg of a substance by 1 K (or 1 C). Q = m c (change in T), where c is specific heat capacity; SI unit J/(kg K).
Define latent heat and name its two types.
Latent heat is the heat absorbed or released during a change of state at constant temperature. The two types are latent heat of fusion (solid<->liquid) and latent heat of vaporization (liquid<->gas).
Define thermal expansion and name its three types.
Thermal expansion is the increase in size of a body when heated. The three types are linear expansion (length), superficial/areal expansion (area), and cubical/volume expansion (volume).
What is the anomalous expansion of water?
Between 0 C and 4 C, water contracts instead of expanding on heating, reaching maximum density at 4 C. Below 4 C and on freezing it expands, which is why ice floats and lakes freeze from the top.
Name the three methods of heat transfer and state which require a medium.
Conduction (needs a medium, mainly in solids), convection (needs a fluid medium, in liquids and gases), and radiation (needs no medium, can travel through vacuum).
Define conduction and convection of heat.
Conduction is heat transfer through a material by particle vibration/collision without the particles moving from their positions (mainly in solids). Convection is heat transfer by the actual movement of heated fluid (liquid or gas) carrying energy.
Define radiation as a method of heat transfer and give one property.
Radiation is the transfer of heat as electromagnetic waves (infrared) that require no medium and travel at the speed of light; dark, dull surfaces are good emitters and absorbers while shiny surfaces are poor ones.
Define a wave and distinguish between transverse and longitudinal waves.
A wave is a disturbance that transfers energy from one place to another without transferring matter. In transverse waves the particles vibrate perpendicular to the direction of travel (e.g., light); in longitudinal waves they vibrate parallel to it (e.g., sound).
Define wavelength, frequency, and amplitude of a wave.
Wavelength: distance between two consecutive identical points (e.g., crest to crest). Frequency: number of waves passing a point per second (unit hertz, Hz). Amplitude: maximum displacement of a particle from its rest position.
State the wave equation relating speed, frequency, and wavelength.
Wave speed = frequency x wavelength (v = f x lambda), where v is speed (m/s), f is frequency (Hz), and lambda is wavelength (m).
What type of wave is sound, what medium does it need, and what is its approximate speed in air?
Sound is a longitudinal mechanical wave. It needs a material medium (cannot travel through vacuum). Its speed in air is about 330-340 m/s at room temperature.
What is an echo, and what causes it?
An echo is a sound heard again after reflection from a hard, distant surface. It is caused by the reflection of sound waves back to the listener.
What this deck covers
The Physics deck follows the Navy Sailor Test Physics syllabus — 6 chapters and 19 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 9.3 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 172 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
Physics flashcards FAQ
How many Physics flashcards are in this Navy Sailor Test deck?
56 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these Navy Sailor Test flashcards free?
Yes. The preview here is free to read with no signup, and the full 56-card deck is free inside the Examius app.
What do the Physics cards cover?
They follow the Navy Sailor Test Physics syllabus — 6 chapters and 19 topics — so the questions track what is actually examinable.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.