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Sample Practice Test Questions

General Science

Which of the following is not a terrestrial planet?

Jupiter

The four planets closest to the Sun (Mercury, Venus, Earth, and Mars) are called terrestrial (Earth-like) planets because, like the Earth, they're solid with inner metal cores covered by rocky surfaces.

Word Knowledge
Comprehensible most nearly means:
intelligle
Understandable.
General Science

The gravitational interaction of Earth and the Moon is responsible for which of these?

tides

Tides are caused by the gravitational interaction of Earth and the Moon.

Mechanical Comprehension

Which class of lever offers no mechanical advantage?

third

A third-class lever is used to increase distance traveled by an object in the same direction as the force applied. The fulcrum is at one end of the lever, the object at the other, and the force is applied between them. This lever does not impart a mechanical advantage as the effort force must be greater than the load but does impart extra speed to the load. Examples of third-class levers are shovels and tweezers.

General Science

Which of these is a type of Earth's crust?

oceanic

The crust is the Earth's outermost layer and is divided into oceanic and continental types. Oceanic crust is 3 miles (5 km) to 6 miles (10 km) thick and is composed primarily of denser rock. Continental crust is 20 to 30 miles (30 to 50 km) thick and composed primarily of less dense rock. The crust makes up approximately one percent of the Earth's total volume.

Word Knowledge
The impenitent criminal received a harsh penalty, but his remorseful accomplice was released.
obdurate
Lacking remorse.
Mechanical Comprehension
Only multiplies the effort force

Which of the following statements about this pulley configuration is false?

Only multiplies the effort force

A block and tackle is a combination of one or more fixed pulleys and one or more movable pulleys where the fixed pulleys change the direction of the effort force and the movable pulleys multiply it. The mechanical advantage is equal to the number of times the effort force changes direction and can be increased by adding more pulley wheels to the system. An easy way to find the mechanical advantage of a block and tackle pulley system is to count the number of ropes that support the resistance.

Word Knowledge
Ethical most nearly means:
honorable
Conforming to accepted standards.
Automotive Information

Which of the following is the result of combustion being initiated by a source other than the spark plug?

pre-ignition

Normal combustion in an engine is initiated by a spark plug and results in the complete burning of the air-fuel mixture. If combustion is initiated by a source other than the spark plug, by a hot spot in the cylinder or combustion chamber for example, pre-ignition results. Detonation results if the air-fuel mixture explodes instead of burning. Detonation can cause extremes in pressure in the combustion chamber leading to engine damage.

Word Knowledge
"Having cake now will preclude dessert later," said Amber's mother.
prevent
To rule out in advance.