# Free ASVAB Practice Tests

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• 1,557 Questions, Problems & Flash Cards
Huge database of 668 multiple-choice questions, 135 math and algebra problems, and 754 flash cards to help you prepare for the ASVAB.
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Sample Practice Test Questions

Word Knowledge
Incisive most nearly means:
keen
Impressively direct and decisive.
Word Knowledge
The naive Simon assumed that everyone was as simple and kind as he was.
artless
Lacking worldy wisdom.
General Science

The crust and lithosphere of the Earth is made up of which of the following?

plates

The crust and the rigid lithosphere (upper mantle) is made up approximately thirty separate plates. These plates more very slowly on the slightly more liquid mantle (asthenosphere) beneath them. This movement has resulted in continental drift which is the gradual movement of land masses across Earth's surface. Continental drift is a very slow process, occurring over hundreds of millions of years.

Shop Information

What is a framing square used for?

marking lines at a right angle

Rulers are used to both measure distance and to draw straight lines. Tape measures are flexible rulers made from cloth or metal and are useful for measuring longer distances and in tighter spaces. Both rulers and tape measures provide similar accuracy, commonly down to $${1 \over 16}$$ or $${1 \over 32}$$ inch. A steel framing square is made up of a shorter ruler (tongue) and a longer ruler (blade) that meet at a 90° (right) angle. A framing square is often used by carpenters when framing stairs and roofs.

Mechanical Comprehension
How much work can a 1 hp engine do in 3 seconds?
1650 ft⋅lb
Horsepower (hp) is a common measure of power output for complex machines. By definition, a 1 hp machine does 550 ft⋅lb of work in 1 second: 1 hp = 550 ft⋅lb/s. Substituting the variables for this problem gives us:
$$W = 1 hp \times 550 \frac{ft⋅lb}{s} \times 3s = 1650 ft⋅lb$$
Word Knowledge
Compulsion most nearly means:
urge
An irresistible impulse.
General Science

Which of the following is not part of the carbon cycle?

precipitation

The carbon cycle represents the ciruit of carbon through Earth's ecosystem. Carbon dioxide (CO2) in the atmosphere is absorbed by plants through photosynthesis. Plants then die and release carbon back into the atmosphere during decomposition or are eaten by animals who breathe (respiration) the carbon into the atmosphere they exhale and produce waste which also releases carbon as it decays.

Mechanical Comprehension

On Earth, acceleration due to gravity (g) is approximately __________.

9.8 m/s2

Newton's Law of Univeral Gravitation defines the general formula for the attraction of gravity between two objects:  $$\vec{F_{g}} = { Gm_{1}m_{2} \over r^2}$$ . In the specific case of an object falling toward Earth, the acceleration due to gravity (g) is approximately 9.8 m/s2

Mechanical Comprehension
If the green box weighs 30 lbs. and is 8 ft. from the fulcrum, how much force would need to be applied at the blue arrow to balance the lever if the arrow's distance from the fulcrum is 9 ft.?
26.67 lbs.

To balance this lever the torques at the green box and the blue arrow must be equal. Torque is weight x distance from the fulcrum so the equation for equilibrium is:

where a represents the green box and b the blue arrow, R is resistance (weight/force) and d is the distance from the fulcrum.

Solving for Rb, our missing value, and plugging in our variables yields:

Rb = $$\frac{R_ad_a}{d_b}$$ = $$\frac{30 lbs. \times 8 ft.}{9 ft.}$$ = $$\frac{240 ft⋅lb}{9 ft.}$$ = 26.67 lbs.

Shop Information

This tool is a(n) __________.

chisel

A chisel has a long sharp edge and is used, often in conjunction with a hammer, for cutting. In woodworking, chisels are used to remove large sections of wood to create the initial shape of a design. In metalworking, chisels are used to remove waste metal when a smooth finish is not required.