ASVAB ASVAB Certifications ASVAB-SECTION-7 Questions & Answers

• Question 111:

  The member of the solar system with the shortest period of solar revolution is a __________.

  A. planetary satellite

  B. asteroid

  C. planet

  D. comet

  Correct Answer: C

  Explanation: The planet Mercury orbits the sun in 88 days.

• Question 112:

  The category of weather system with the highest velocity winds is the __________.

  A. thunderstorm

  B. tornado

  C. hurricane

  D. sea breeze

  Correct Answer: B

  Explanation:

  Wind velocities of tornados have been measured in excess of 250 miles per hour.

• Question 113:

  A 120-volt electrical power supply produces 1/2 ampere to the load. The power delivered is __________.

  A. 60 watts

  B. 60 ohms

  C. 240 watts

  D. 240 ohms

  Correct Answer: A

  Explanation:

  Power = voltage x current (in watts) = 120 volts x 1/2 amp = 60 watts.

• Question 114:

  Frictional forces usually do NOT __________.

  A. oppose motion

  B. decrease kinetic energy

  C. increase potential energy

  D. produce wear

  Correct Answer: C

  Explanation:

  The friction force will tend to oppose motion, slow the object down, and produce wear between contacting

  surfaces.

• Question 115:

  A magnifying glass is what kind of lens used on objects how far away?

  A. convex lens used closer than one focal length

  B. concave lens used closer than one focal length

  C. convex lens used beyond one focal length

  D. concave lens used beyond one focal length

  Correct Answer: A

  Explanation:

  An object held closer than one focal length from a convex lens will produce a virtual magnified image.

• Question 116:

  A 1-kilogram mass is dropped from a height of 1 meter.

  Its kinetic energy just before it hits the ground is __________.

  A. 1 joule

  B. 10 joules

  C. 100 joules

  D. 1,000 joules

  Correct Answer: B

  Explanation:

  Gravitational potential energy is converted to kinetic energy. The kinetic energy is equal to the mass of the

  object times the force of gravity times the height.

  Thus, mgh = 1 kilogram × 9.8 meters/second × 1 meter = (approximately) 10 joules.

• Question 117:

  The mass of 1 cubic meter of water is approximately __________.

  A. 1 kilogram

  B. 10 kilograms

  C. 100 kilograms

  D. 1,000 kilograms

  Correct Answer: D

  Explanation:

  One meter equals 100 centimeters. Therefore, 1 cubic meter equals 1,000,000 cubic centimeters. Since

  each cubic centimeter has a mass of 1 gram, the approximate total mass is 1,000 kilograms.

• Question 118:

  A magnetic compass points in the direction of the __________.

  A. true north

  B. geographic North Pole

  C. magnetic North Pole

  D. local magnetic field

  Correct Answer: D

  Explanation:

  A magnetic compass is influenced by all magnetic sources in its vicinity and aligns itself according to the

  net magnetic field at that location.

• Question 119:

  The half-life of iodine-131 is 8 days.

  Approximately how long would it take for 1 milligram of 1-131 to decay to 1/2 milligram of 1-131?

  A. 4 days

  B. 8 days

  C. 2 weeks

  D. 1 month

  Correct Answer: D

  Explanation:

  If the amount of 1-131 is reduced by one-half every 8 days: 8 mg (8 days), 4 mg (8 days), 2 mg (8 days),

  1/2 mg.

  It would take 32 days (approximately 1 month).

• Question 120:

  A gaseous product of the fermentation of sugar is __________.

  A. carbon monoxide

  B. carbon dioxide

  C. sulfur dioxide

  D. oxygen

  Correct Answer: B

  Explanation:

  The fermentation of sugar by yeast produces ethyl alcohol and carbon dioxide.