ASVAB ASVAB-SECTION-7 Online Practice Questions and Exam Preparation

ASVAB ASVAB-SECTION-7 Online Questions & Answers

• Question 71:

  Which element has no neutrons?

  A. nitrogen
  B. hydrogen
  C. carbon
  D. helium
  B. hydrogen

• Question 72:

  Given that iron has 26 protons, 26 electrons, 30 neutrons, and an atomic weight of 55.845 amu, what is its atomic number?

  A. 52
  B. 30
  C. 55.845
  D. 26
  D. 26

• Question 73:

  Not counting the sun, the closest star to the Earth is __________.

  A. Rigel
  B. Proxima Centauri
  C. Antares
  D. Betel
  B. Proxima Centauri

• Question 74:

  The elements hydrogen and helium comprise what percentage of almost all matter in the Universe?

  A. 75 percent
  B. 82 percent
  C. 90 percent
  D. 98 percent
  D. 98 percent

• Question 75:

  The temperature of the atmosphere is less during the nighttime hours because __________.

  A. the side of the earth not feeing the sun loses heat by convection
  B. the side of the earth feeing the sun loses heat by evaporation
  C. the side of the earth not feeing the sun loses heat by radiation
  D. people set their thermostats lower when they go to bed
  C. the side of the earth not feeing the sun loses heat by radiation

• Question 76:

  Heparin is an anticoagulant.

  What is the primary purpose of drugs like Heparin?

  A. to cause nausea
  B. to prevent the heart from stopping
  C. to cause drowsiness
  D. to prevent the blood from clotting
  D. to prevent the blood from clotting

• Question 77:

  Erosion and depletion are problems associated with __________.

  A. blood circulation
  B. baldness
  C. soil conservation
  D. cardiovascular exercise
  C. soil conservation

• Question 78:

  Muscles attach to bone with __________.

  A. connective tissue
  B. ligaments
  C. tendons
  D. rubber bands
  C. tendons

• Question 79:

  The three important properties of sound waves are __________.

  A. wavelength, speed, and crest
  B. speed, frequency, and reflection
  C. wavelength, frequency, and vibration
  D. wavelength, frequency, and speed
  D. wavelength, frequency, and speed

• Question 80:

  Gene expression in physical characteristics such as eye or hair color is referred to as __________.

  A. allele
  B. genotype
  C. phenotype
  D. homozygous allele
  C. phenotype