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Sample Practice Test Questions
The dimensions of this cylinder are height (h) = 9 and radius (r) = 1. What is the volume?
The volume of a cylinder is πr2h:
v = πr2h
v = π(12 x 9)
v = 9π
Leafy vegetables, beans, potatoes, fruits, and whole grains are good sources of:
Fiber provides bulk to help the large intestine carry away waste. Good sources of fiber are leafy vegetables, beans, potatoes, fruits, and whole grains.
As a cold front moves into an area, the heavier cool air __________ the lighter warm air that it is replacing.
A cold front is a warm-cold air boundary with the colder air replacing the warmer. As a cold front moves into an area, the heavier cool air pushes under the lighter warm air that it is replacing. The warm air becomes cooler as it rises and, if the rising air is humid enough, the water vapor it contains will condense into clouds and precipitation may fall.
When using a hacksaw, blades with __________ teeth are more appropriate for cutting thinner materials.
A hacksaw has replaceable blades and is used to cut metal. The blade type is chosen based on the material that is to be cut. Blades with larger numbers of teeth per inch are more appropriate for cutting thinner materials.
Which of the following indicates the correct reproductive sequence?
ovum → zygote → fetus
During intercourse, the penis ejaculates sperm, produced in the testes, into the vagina. Some of the sperm makes their way to the uterus where, if they encounter an egg to fertilize, unite with the ovum to form a fertilized egg or zygote. The zygote then may implant in the uterus and eventually develop into a fetus.
Which of the following is not a characteristic of a step-up transformer?
the primary voltage is higher than the secondary voltage
As their names indicate, a step-up transformer is used to step up or increase voltage and a step-down transformer is used to step down or decrease voltage. In a step-up transformer, the secondary voltage is higher than the primary voltage and it has more turns in the secondary winding than in the primary winding.
In the heart, the __________ artery and vein manage blood flow to the lungs.
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
Secondary consumers that also eat producers are known as:
Secondary consumers (carnivores) subsist mainly on primary consumers. Omnivores are secondary consumers that also eat producers. Examples are rats, fish, and chickens.
The mechanical advantage of a wheel and axle is equal to the:
ratio of the diameters of the wheels
A wheel and axle uses two different diameter wheels mounted to a connecting axle. Force is applied to the larger wheel and large movements of this wheel result in small movements in the smaller wheel. Because a larger movement distance is being translated to a smaller distance, force is increased with a mechanical advantage equal to the ratio of the diameters of the wheels. An example of a wheel and axle is the steering wheel of a car.
What function does a two-stroke cycle engine perform on the second stroke?
combustion and exhaust
The two strokes of a two-stroke cycle engine are fuel intake and compression then combustion and exhaust.