Term
A baker made 20 pies. A Boy Scout troop buys one–fourth of his pies, a preschool teacher buys one–third of his pies, and a caterer buys one–sixth of his pies. How many pies does the baker have left?
A. 3⁄4
B. 15
C. 12
D. 5 |
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Definition
D. 5
1/4 + 1/3 + 1/6 = 9/12 (do work..) and then 9⁄12 can be reduced to 3⁄4. 3⁄4 or 75% of the pies have been sold. 20 × 0.75 = 15. 15 of 20 pies have been sold. 20 − 15 = 5 pies remaining. |
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Term
Overheating the engine can cause all of the following problems EXCEPT:
A. Burned engine bearings B. Enlarged pistons C. Melted engine parts D. Improved fuel efficiency |
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Definition
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Term
| If an alternator overcharges the battery, a likely explanation is: A. The governor has malfunctioned. B. The voltage regulator isn't working properly. C. The ignition coil has overheated. D. The battery-acid solution is low. |
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Definition
| The voltage regulator isn't working properly. |
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Term
| A primary advantage of the electronic ignition system over conventional ignition systems is: A. The electronic ignition system is less expensive to repair. B. The electronic ignition system provides a high voltage. C. The electronic ignition system allows for use of a lower octane fuel. D. All of the above. |
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Definition
| The electronic ignition system provides a high voltage. |
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Term
The primary purpose of piston rings is to:
A. Seal the combustioncahmber and allow the piston tomove freely.
B. Connect the piston to the camshaft
C. Allow fuel to enter the piston cylinder
D. Provide lubrication to the piston cylinder |
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Definition
| Seal the combustioncahmber and allow the piston tomove freely. |
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Term
If the electrolyte solution in a battery is too low, you should add:
A. Sulfuric acid
B. Antifreeze
C. Distilled water
D. Gasoline |
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Definition
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Term
Connecting rods connect the piston to the:
A. Flywheel
B. Fuel Pump
C. Crankshaft
D. Battery |
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Definition
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Term
If a car uses too much oil, which of the following parts may be worn?
A. Camshaft
B. Connecting Rods
C. Fuel Pump
D. Piston Rings |
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Definition
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Term
In which automotive system would you find a “wishbone”?
A. Transmission
B. Exhaust
C. Engine
D. Suspension |
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Definition
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Term
On which automotive system would a “stall test” be performed?
A. Transmission
B. Exhaust
C. Engine
D. Suspension |
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Definition
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Term
The alternator:
A. Starts the engine
B. Supplies power to battery
C. Connects the ignition system to the engine
D. can be used as an alternative to motor oil |
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Definition
| Supplies power to the battery |
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Term
| A series of cell divisions that results in the formation of an embryo is called |
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Definition
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Term
| The process by which energy is provided at the cellular level is called: |
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Definition
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Term
| Light waves travel at a rate of about: |
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Definition
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Term
| If there are two full moons in a single month, the second full moon is called: |
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Definition
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Term
| The top or broadest level of the classification system for living organisms is called: |
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Definition
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Term
| The largest moon in the solar system is: |
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Definition
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Term
| Cell protoplasm is made up mostly of |
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Definition
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Term
Which inorganic substance is present in the greatest quantity inside animal cells?
A. protein
B. oxygen
C. sodium chloride
D. water |
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Definition
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Term
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Definition
| carry oxygen and carbon dioxide |
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Term
| The atomic number of an atom is determined by: |
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Definition
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Term
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Definition
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Term
| It’s impossible for the sun to turn into a black hole because: |
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Definition
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Term
| Electrons are particles that are: |
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Definition
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Term
| The chamber of the heart that pumps blood to the lungs is called the: |
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Definition
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Term
| The smallest part of an element that still acts like an element is: |
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Definition
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Term
| How many planets in the solar system have rings? |
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Definition
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Term
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Definition
| The temperature at which a solid becomes a liquid is |
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Term
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Definition
| The surface of the earth is called |
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Term
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Definition
| Not counting the sun, the closest star to the Earth is |
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Term
| An induction clutch works by |
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Definition
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Term
| If a first class lever with a resistance arm measuring 2 feet and an effort arm measuring 8 feet are being used, what’s the mechanical advantage? |
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Definition
| 4 ... Length of Effort Arm ÷ Length of Resistance Arm...= 8 ÷ 2 = 4. |
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Term
| Air weighs about 15 psi. What’s the amount of pressure (force) exerted on the top of your head, given a surface area of 24 inches? |
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Definition
| Power equals force divided by area in square inches (P = F/A). This formula can also be stated as F = A × P. Substitute the known quantities. F = 15 × 24 = 360 pounds. |
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Term
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Definition
| coupling....They connect and disconnect parts!!! |
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Term
| Springs used in machines are usually made of: |
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Definition
| steel...sometimes they are made of brass and other metal alloys. |
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Term
| he force produced when a boxer’s hand hits a heavy bag and “bounces” off it is called: |
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Definition
| recoil...Recoil occurs when an object producing a force is kicked back |
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Term
| A cubic foot of water weighs about 62.5 pounds. If an aquarium is 18 feet long, 10 feet deep, and 12 feet wide, what’s the approximate pounds-per-square-inch pressure (psi) on the bottom of the tank? |
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Definition
| You can determine the pressure of all that water by multiplying the volume of the aquarium by the weight of the water. Volume = lwh. The bottom of the tank is 18 feet long by 12 feet wide by 10 feet high for a total volume of 2,160 cubic feet (18 × 12 × 10). A cubic foot of water weighs approximately 62.5 pounds. 2,160 × 62.5 gives an approximate pressure on the bottom of the tank of about 135,000 pounds over the entire surface area. The surface area of the bottom of the tank is length × width. 216 inches (18 feet × 12) × 144 inches (12 feet × 12) = 31,104. Dividing the pressure of 135,000 by the number of square inches of surface area gives an approximate PSI of 4. |
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Term
| A single block-and-fall is called a: |
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Definition
|
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Term
| f a house key, a wooden spoon, a plastic hanger, and a wool jacket are all the same temperature, which one feels the coldest? |
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Definition
| key..will feel coldest because metal is a better conductor than the other materials. |
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Term
| Gears with their teeth together in mesh turn in opposite directions |
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Definition
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Term
| Stationary pulleys give no mechanical advantage, so effort equals the weight of the crate or 50 pounds. |
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Definition
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Term
| A wood tool, a silver tool, and a steel tool are placed in boiling water for cleaning. Which tool gets the hottest? |
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Definition
| Silver is the best conductor, so it becomes hottest. |
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Term
| A way to determine the amount of power being used is to |
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Definition
| Divide the amount of work done by the amount of time it takes.......The formula for determining power is Power = Work ÷ Time. |
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Term
| A gauge shows the complete loss of oil pressure while driving. The best action is to: |
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Definition
| Pull over immediately and investigate the problem. |
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Term
| A two-cycle engine will normally be found on |
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Definition
| snowmobiles, chainsaws, and some motorcycles |
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Term
| The difference between a single-acting and an opposed piston engine is: |
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Definition
| Single-acting piston engines have one piston per cylinder and opposed piston engines have two. |
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Term
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Definition
|
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Term
| The safest way to make a hole in sheet metal is to: |
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Definition
| punch it using a metal punch |
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Term
| Soft brake-pedal movement can be caused by: |
|
Definition
| air in the hydraulic brake system |
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Term
| Pouring cold water on an overheated engine: |
|
Definition
| could cause the engine block to crack |
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Term
| A car equipped with limited-slip differential: |
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Definition
| . transfers the most driving force to the wheel with the greatest amount of traction |
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Term
| A bucking bar is used to: |
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Definition
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Term
| To check for horizontal trueness, the best tool to use is a: |
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Definition
|
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Term
| Sledges can be used to drive: |
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Definition
|
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Term
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Definition
| with the grain of the wood |
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Term
|
Definition
| set nails below the surface of wood |
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Term
| Washers that have teeth all around the circumference to prevent them from slipping are called: |
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Definition
|
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Term
|
Definition
| Voltage = Current × Resistance....Ohm’s law states that Voltage (V) = Current (I) × Resistance (R) |
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Term
| An electromagnetic-induction device usually has which of the following materials in its core? |
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Definition
|
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Term
| How many diodes should you expect to find in a bridge rectifier? |
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Definition
|
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Term
| Another name for cycles per second is: |
|
Definition
| Hertz...The number of times alternating current changes direction in one second is known as its frequency |
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Term
| Newer cell phones contain a removable memory card, which is often called a: |
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Definition
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Term
|
Definition
|
|
Term
| Changing alternating current to direct current is called: |
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Definition
|
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Term
| Radar can operate at frequencies as high as: |
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Definition
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Term
| Millihenries are related to: |
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Definition
|
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Term
| When current flows through a wire, the following influences are present: |
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Definition
voltage, ohms, and amperes
Voltage, ohms, and amperes are always present when current flows through a wire. |
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Term
| A light bulb is 60 watts. Operated at 120 volts, how much current does it draw? |
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Definition
| 0.5 ampere Power = Current × Voltage or, written another way, Current = Power/Voltage. 60/120 = 0.5 ampere. |
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Term
| To produce greater storage of electrons and more capacitance, capacitors should: |
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Definition
|
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Term
| How many wires do serial cables used on computers have? |
|
Definition
| 9..This is true, even if the cable has a 25-pin connector. Serial cables are often used to connect computers to perpetual devices. |
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Term
| Insulated fittings can be used to splice wires, thus eliminating the need for: |
|
Definition
| soldering the wires together |
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Term
| If you operate an incandescent light bulb at less than its rated voltage: |
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Definition
| The bulb will burn dimmer and last longer.....The bulb will burn dimmer because its full potential isn’t used; it will last longer for the same reason. |
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Term
| To measure electrical power, you would use a(n): |
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Definition
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Term
|
Definition
|
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Term
| A fuse with a higher-than-required rating used in an electrical circuit: |
|
Definition
| may not work properly....Because fuses are designed to prevent current overload at a specific level, a fuse with a high rating may not work properly for a circuit rated at a lower level. |
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Term
| A number-12 wire, compared to a number-6 wire: |
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Definition
| is smaller in diameter...The larger the number, the smaller (in diameter) the wire. |
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Term
| One coulomb flowing past a specified point in a wire in one second equals? |
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Definition
|
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Term
|
Definition
| a process that uses the chemical effect of a current |
|
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Term
| A byproduct of electromagnetic induction is |
|
Definition
| electromagnetic radiation |
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Term
| In a power supply, a filter? |
|
Definition
| smoothes out voltage variations. |
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Term
| To measure the flow of current through a circuit, you would use a(n): |
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Definition
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Term
| A current passed through a muscle in the human body will cause the muscle to contract. |
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Definition
This is known as
the physiological effect of current |
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Term
| In a closed electrical circuit |
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Definition
| one terminal is always positive, and one terminal is always negative. |
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Term
| Resistance is measured in |
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Definition
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Term
| Television stations often broadcast in |
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Definition
|
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Term
| What is a byproduct of frequencies over a billion MHz? |
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Definition
|
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Term
|
Definition
| the storage of energy that occurs in a nonconductor |
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Term
| Electricians use the term low potential to refer to |
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Definition
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Term
|
Definition
|
|
Term
| A cam belt is also known as |
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Definition
|
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Term
| Block engines usually have |
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Definition
|
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Term
| A good tool used to spread and or shaping mortar would be |
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Definition
|
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Term
|
Definition
|
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Term
| Annular ring, clout, and spring head are known as |
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Definition
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Term
| The virus that causes AIDS |
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Definition
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Term
| In what region of the body is the Humerus found? |
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Definition
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Term
| What kind of cells are important part of the immune system? |
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Definition
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Term
| Positive charge of an atom |
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Definition
|
|
Term
| The process of cellular respiration in animal cells occurs in which organelle? |
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Definition
|
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Term
|
Definition
| To produce genetically identical copies of cells |
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Term
| Amoebas are single-celled organisms that eat by surrounding and engulfing its food. This process of eating is |
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Definition
|
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Term
| What kinds of energy does a glass that falls off a table onto the floor illustrate? |
|
Definition
| Potential energy converted to kinetic energy |
|
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Term
| White light from the sun is |
|
Definition
| a mixture of all the colors of the visible spectrum |
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Term
| What kind of materials could serve as possible conductors? |
|
Definition
| Metals (Silver, Copper ect.....) |
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Term
| The electrical current used in most everyday appliances? |
|
Definition
|
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Term
| Human blood has a pH of about 7.4, if the pH were to change to 6.9 this indicates |
|
Definition
an increase in acidity
(The pH drops from 7.4 to 6.9. An increase of the proton (H+) concentration thus decreases the pH. A lower pH results in an increase in acidity.) |
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Term
| Which planet would most likely have a temperature of 800°F? |
|
Definition
|
|
Term
|
Definition
| molten magma within the earth that cools and solidifies |
|
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Term
| Does warm air have more or less atmospheric pressure than cold air. |
|
Definition
| Less atmospheric pressure |
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Term
| Which kingdom consists of eukaryotic, single-celled organisms |
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Definition
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Term
| A water shortage has resulted in restricted, small quantities of water to drink. What hormone would increase in circulation as a result of this decreased water intake? |
|
Definition
anti-diuretic hormone
(Anti-diuretic hormones work on renal tubules of the kidneys by making them reabsorb more water from the forming urine, and returning it to the bloodstream. Growth hormones stimulate body cells to grow and divide. Insulin lowers blood sugar levels. Oxytocin stimulates uterine contractions.) |
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Term
| In humans, the trait for dimpled chins is dominant. Not having a dimpled chin is recessive. Two dimpled chin people who are heterozygous for this trait have children. What is the probability of dimpled versus non-dimpled offspring? |
|
Definition
| 3/4 Dimpled, 1/4 Non-Dimpled |
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Term
| What disease results from vitamin deficiency? |
|
Definition
|
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Term
| True or False - A burning match involves a chemical reaction? |
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Definition
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Term
| You are stranded in a desert. After some time you notice a pool of water off in the distance. You never reach the water and you realize it was a mirage. What is the most likely cause of this phenomenon? |
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Definition
| Refraction of light rays off the sand creating a false image |
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Term
| What is the most prevelant current theory to explain the appearance of deep holes and craters on the moon's surface |
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Definition
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|
Term
| One atom of Carbon has an atomic weight of 12 units; another atom of Carbon weighs 14 units. These two atoms are |
|
Definition
|
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Term
| Diabetes mellitus results from the malfunction of |
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Definition
|
|
Term
| A person who is a carrier for sickle cell anemia is genetically |
|
Definition
| Heterozygous for the trait |
|
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Term
| Monocots and dicots are groups of |
|
Definition
Angiosperms
(Angiosperms are a division of plants that are classified into two groups, monocots and dicots, which refer to seed leaf structure. (Monocots—one-seed leaves; dicots—two-seed leaves.) |
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Term
| What two respiratory gases are carried by red blood cells? |
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Definition
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Term
|
Definition
|
|
Term
| A list of the elements in order of increasing atomic number is called the |
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Definition
|
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Term
| Polar molocules attracted to water are |
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Definition
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Term
| An archaeologist found an insect in a layer of clay, a fern in a layer of sand, a crustacean in a layer of mud, an amphibian in a layer of clay, and a bird in a layer of rock. The insect probably lived at the same time as the |
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Definition
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Term
| What natural disaster is associated with seismic activity and recorded by a seismograph? |
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Definition
|
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Term
| True or Fales - Vitamins and Minerals are part of the basic food groups? |
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Definition
|
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Term
| What is synthesized by ribosomes? |
|
Definition
Protiens
(Ribosomes are organelles that help translate amino acids into proteins.) |
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Term
| An atom with 8 protons, 12 neutrons, and 8 electrons has an atomic number of |
|
Definition
8
(The atomic number refers to the number of protons in the nucleus of each atom of an element.) |
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Term
| Atmospheric gases that allow light to enter the atmosphere but do not allow heat to exit create a |
|
Definition
|
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Term
|
Definition
| a combination of two or more atoms |
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Term
| When you sprinkle regular table salt on food, the salt will |
|
Definition
| dissociate by a decomposition reaction |
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Term
| Chewing is necessary for digestion because it |
|
Definition
| increases the surface area of food exposed to enzymatic action |
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Term
| Mammals, birds, amphibians and reptiles are examples of organisms belonging to which phylum? |
|
Definition
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