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Sample Practice Test Questions
The heat from the Sun traveling to Earth is an example of which of the following?
radiation
Radiation occurs when electromagnetic waves transmit heat. An example is the heat from the Sun as it travels to Earth.
A quadrilateral is a shape with __________ sides.
4
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
The two major types of vehicle braking systems are:
drum and disc
Brakes utlize friction to slow vehicle tires. Drum brakes employ a cast iron drum that roates with the vehicle axle. When hydraulic pressure is applied to the brake assemblies at the wheels, internal pistons expand and push brake shoes outward into contact with the brake drum slowing the rotation of the axle. More powerful disc brakes operate by pinching a rotating disc betweeen two brake pads and allow for a larger surface area to contact the disc, provide more force, and are more easily cooled.
Simplify (9a)(8ab) + (7a2)(8b).
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
(9a)(8ab) + (7a2)(8b)
(9 x 8)(a x a x b) + (7 x 8)(a2 x b)
(72)(a1+1 x b) + (56)(a2b)
72a2b + 56a2b
128a2b
Which of the following is not a medium for sound waves?
vacuum
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.
Engines with radial cylinder configurations are most common in:
aircraft engines
A radial arrangement places cylinders in a circle around the crankshaft and is used almost exclusively in aircraft engines.