In this ASVAB study guide, you will find 100 of the most commonly tested questions on the Armed Services Vocational Aptitude Battery for the 2025/2026 exam cycle.
Each question here is carefully selected based on the past exam trends and topic relevance across the core ASVAB sections: General Science, Arithmetic Reasoning, Word Knowledge, Paragraph Comprehension, Mathematics Knowledge, Electronics Information, Auto and Shop Information, Mechanical Comprehension, and Assembling Objects.
If you're preparing for enlistment in the U.S. Armed Forces or aiming to qualify for a specific military occupational specialty (MOS), this guide will provide the information and practice you need. Through this guide, you will understand how exams are set, what’s expected of you and how to answer them.
We have done our best to ensure that these practice items reflect the format and subject matter you’ll see on test day. Therefore, I can confidently say that this ASVAB study guide is one of the best practical tool for focused exam review and content retention.
All questions are paired with their respective answers to help learners reinforce key concepts and boost your confidence on the day that you will be sitting for your exam. Bookmark this PasingGrades blog page for regular review, timed practice, or to act as a guide to your final week of study before the official exam.
This study material is designed for serious test-takers who want a clear, reliable overview of what’s actually covered on the ASVAB certification in 2025.
Get the actual 2025 exam here: ASVAB Real Exam 2025
ASVAB Cheat Sheet: Top 100 Questions with Answers
1. What is the Kuiper belt?: a region of the solar system beginning just beyond the orbit of Neptune that contains many icy comets
2. What organ produces bile?: liver
3. What is the name of the two largest veins in the body: vena cavae
4. In the metric system the basic unit of length is the: Meter
5. What type of star is the sun: yellow dwarf
6. When light bends due to passing through a medium, this bending is referred to as _________: Refraction
7. Define capillaries: The smallest blood vessels, which deliver oxygenated blood to the body's tissues
8. Identify the value and abbreviation of Deka: base times 10, symbolized by da
9. The hottest and uppermost layer of Earth's atmosphere is the ________: Mantle
10. Define Trachea: The windpipe--the passageway from the throat to the lungs
11. which blood type is the universal donor: O
12. Above the stratosphere is the: Mesosphere
13. What role do ribosomes play in eukaryotic cells?: Produces protein
14. Variants of genes is known as: alleles
15. Our solar system's asteroid belt lies between the orbits of: Mars and Jupiter
16. A lunar eclipse occurs when: Earth passes between the moon and the sun.
17. What does DNA stand for: Deoxyribose Nucleic Acid
18. Absolute zero expressed in Degrees celsius is: -273 C
19. Define atomic mass: Number of protons and neutrons
20. Define the abbreviation of Hecto: Base x 100
21. Scurvy is the lack of what nutrient?: Vitamin C
22. Liquids are effective at transmitting force because they are difficult to: Compress
23. What does torque measure: how much a force is able to cause an object to rotate
24. Torque is directly proportional to _____ and _____.: force and distance
25. What is the advantage of a pulley: it enables someone to lift with a downward force
26. How is gear ratio determined?: Larger gear teeth number with smaller gear
27. Is strep throat caused by a bacterium or a virus: bacteria
28. Small objects that enter the earth's surface and burn up creating a visible bright streak in a night sky is called: meteors
29. Can light travel through a vacuum?: Yes
30. A recessive trait is displayed in an organism only if: If both alleles have the recessive trait
31 When light reflects off a surface, the angle of __________ is equal to the angle of ______________: Incidence, reflection
32. ______ rock is formed when mineral deposits, such as those carried by a river, harden over time: Sedimentary
33. In a third class lever, where is the fulcrum and where is the force applied: The fulcrum is positioned near one end of the lever, and an upward force is applied to the middle of the lever.
34. What unit is used to express torque: newton meter or the foot pound
35. What unit is used to express kinetic or potential energy, and what does that unit represent?: Joules, Kg x m^2 / s^2
36. Is torque directly or inversely proportional to the distance from the center of rotation to the point where the force acts?: Directly
37. Define sublimation: solid to gas
38. What are some minerals that are required for proper nutrition: calcium, magnesium and iron
39. The process by which a cell divides into two daughter cells is called: Mitosis
40. Define Genotype: genetic makeup of an organism
41. Gametes are called: haploids
42. Identify the value and abbreviation of this metric system prefix: Kilo: Base x 1000
43. each row of the periodic table is called a(n) _________: Period
44. When an acid reacts with a base, what compounds are formed?: Water and Salt
45. are animals that eat other organisms: consumers
46. rock is formed when existing rock material is altered by changes in temperature, pressure, or other processes: Metamorphic
47. a ______ is used to increase or decrease voltage in a circuit: Transformer
48. Induction is measured in ___.: Henries
49. If multiple loads are connected in a series circuit, how is the overall resistance of the circuit calculated?: Rtot = R1 + R2 + R3
50. Define electrical power: Electrical power is the amount of energy delivered to and used by an electric circuit
51. A _____ is used to raise or lower current in a circuit: Resistor
52. A ______ is a thing wire that melts when current exceeds a certain amount: Fuse
53. If one battery's terminal supplies greater voltage than that of another battery, the first battery terminal has more: Electrons
54. Resistance is measured in: Ohms
55 Voltage and current are directly/indirectly proportional: Directly
56. aside from oxyacetylene welding, the other major type of welding is ________: Electric arc welding
57. ______ pliers are used for cutting and bending heavy-gauge wire: Lineman
58. Locking pliers are also known as: vise-grip pliers
59. binding surfaces together with a molten metal alloy is called: soldering
60. A ____ saw is used for making fine, straight cuts: back saw
61. which are used for finer finishing ---- rasps or files?: Files
62. What type of screwdriver would be used with a screw with this type of head?: Robertson screwdriver
63. What type of saw is used for cutting metal?: hacksaw
64. _______ calipers measure the exterior dimensions of an object; ________ calipers measure interior dimensions: Outside, Inside
65. Oxyacetylene welding uses a torch fueled by a mixture of ______ and _______: Oxygen and Acetylene
66. _________ protect other car parts from the energy produced by the up and down movement of the wheels: Shock absorbers
67. the high-voltage winding in a car's ignition system is called the _______: - Secondary coil winding
68. What does a crankshaft do?: A crankshaft converts the linear motion of the piston into rotary motion.
69. Why is a coolant recovery reservoir necessary?: To capture overflow when the radiator pressure cap valve opens
70. What are the two major types of engine cooling systems?: Air- cooling and water cooling
71. The ____ is the main component of the charging system and converts mechanical energy into electrical energy: Alternator
72. ______ send data to a car's computer; ____ receive commands from a car's computer: Sensors; Actuators
73. The AC electricity produced by the alternator is converted to DC by the _______: rectifier
74. What happens in an engine's oil pain: Oil drips from various engine parts into the pan and gets picked up by the oil tube and sent back to the oil pump
75. What is the common distinction between screw and a bolt?: A screw has a round head and indentation and a bolt has a square head
76. ________ thread onto bolts to clamp assemblies together.: Nuts
77. The UNC and UNF classifications define fasteners based on which measure?: Number of threads per inch
78 A hacksaw is made to cut on the ______ stroke.: forward
79. Why is the diameter of a fastener critical to a task?: Determines the size of the hole
80. Before soldering an electrical connection, it is wise to make a(n) ________ connection.: Mechanical connection
81. A welder will require more electric current if either the ____ or the ____ is larger.: Pieces being welded; Electrode in use
82. Why must welders wear helmets and protective clothing?: Protection from Ultraviolet
83. Metal inert gas welding is also known as ______ welding: Wire feed welding 84. When would a technician use adjustable joint pliers?: When large diameter objects must be gripped together
85. Capacitive reactance is measured in ___.: Ohms
86. When silicon's crystalline structure is doped with a five-electron element, the silicon crystal becomes a(n) _____ material.: N-type
87. The ______ is a solid state device that has revolutionized the construction of electronic devices: Transistor 88. Identify this symbol:: galvanometer
89. Why are transformers especially useful in the transmission of electricity from power plants to residences?: It is more efficient to transmit high voltage electricity
90. How can the magnetic field formed by a current-carrying wire be strengthened?: By winding the wire into a coil around a ferrous core
91. If multiple loads are connected in a series circuit, how is the overall voltage of the circuit calculated?: Vtot = V1 + V2 + V3
92. What is the formula for electrical power: Power = current + voltage
93. How would you increase the mechanical advantage of a second class lever: By moving the object to be lifted closer to the fulcrum or making the lever longer
94. How would you increase the mechanical advantage of a first-class lever: By increasing the ratio of the distance between the force and the fulcrum to the distance between the fulcrum and the object to be lifted
95. If a smaller gear drives a large gear, the large gear will turn with a ______ speed than the small gear, but _____ will be increased: Slower; Torque
96. a ramp is a type of ________: inclined plane
97. What is the common term for electrical potential difference or electromotive force?: Voltage
98 Why is copper used as a conductor more frequently than is silver or aluminum: Copper is much less expensive and lower resistance than aluminum
99. Current will flow only if it can follow a(n) ___ circuit.: Closed circuit
100. A circuit with only one path is a ______ circuit: series circuit
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