Free ASVAB Practice Tests

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Sample Practice Test Questions

Automotive Information

What is the pimary advantage of using power brakes on a vehicle?

provides higher hydraulic pressure in the braking system

Power brakes multiply the force a driver applies to the brake pedal using a vacuum booster connected to the engine intake manifold. This provides for much higher hydraulic pressure in the braking system than could be generated by the driver alone. Antilock brakes (ABS) use speed sensors and adjust the brake pressure at each wheel to prevent skidding and allow the driver more steering control in slippery conditions.

General Science

Water coming to a boil on a stove, ice melting, and steam from a cup of coffee are all examples of which of the following? 

convection

Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.

General Science

The ozone layer is in which of Earth's atmospheric layers?

stratosphere

The stratosphere is just above the troposphere and is stratified in temperature with warmer layers higher and cooler layers closer to Earth. This increase in temperature is a result of absorption of the Sun's radiation by the ozone layer.

Word Knowledge
Solace most nearly means:
comfort
Source of consolation.
Word Knowledge
Stifle most nearly means:
suppress
To repress or discourage.
General Science

Molecules and atoms that are outputs from a chemical reaction are known as which of the following?

products

During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).

General Science

Which of the following is not a base unit in the metric system?

degree Fahrenheit

The Fahrenheit scale is used for measuring temperature in the British system. The metric system uses the Celsius scale.

Word Knowledge
The longer Jorge waited in line at the ticket counter, the more his exasperation grew.
irritation
The state of being irritated.
Word Knowledge
My parents banned Chad from our house because of his indecorous behavior at dinner.
vulgar
In bad taste.
General Science

Which of the following is not true of light waves?

are mechanical waves

Unlike mechanical sound waves that require a physical medium for propagation, light waves are electromagnetic and can travel through empty space. Light waves are also much faster, travelling at 186,000 m/s vs. 343 m/s for sound waves.