ASVAB Test 15 - Science

The moon completes a revolution around the earth approximately every __________. 28 days. 365 days. 24 hours. 7 days.

Carcinogens are chemicals that cause __________. high blood pressure. gene mutations. blood clots. diabetes.

A paramecium is __________. a one-celled organism. algae. bacteria. a many-celled organism.

What large halogen is essential for the function of the thyroid gland?. potassium chloride (salt). hemoglobin. calcium. iodine.

The brainstem controls __________. vision. most muscle movements. your sense of balance. some involuntary activities.

What element is the most abundant one in the atmosphere?. oxygen. nitrogen. helium. hydrogen.

Minerals are necessary for __________. respiration. eliminating waste. preventing night blindness. metabolic function.

What's the only metallic element commonly found as a liquid?. bromine. tellurium. mercury. silver.

Which of the following isn't a type of telescope?. Newtonian. Copernican. Gregorian. Hershelian.

A dekagram __________. is larger than a kilogram. is smaller than a kilogram. is the same as a kilogram. doesn't exist.

The Aurora Borealis can be seen only in the __________. winter. summer. Southern Hemisphere. Northern Hemisphere.

The three important properties of sound waves are __________. wavelength, speed, and crest. speed, frequency, and reflection. wavelength, frequency, and vibration. wavelength, frequency, and speed.

Most of the asteroids in the solar system can be found between two planets: __________. Mars and Jupiter. Saturn and Jupiter. Earth and Mars. Mercury and Venus.

At room temperature, an element is a __________. gas. liquid or gas. gas or solid. liquid, gas, or solid.

The elements hydrogen and helium comprise what percentage of almost all matter in the Universe?. 75 percent. 82 percent. 90 percent. 98 percent.

Compounds are created when __________. atoms of two or more like elements are combined. atoms of two or more different elements are combined. two or more compounds are combined. a compound decomposes.

What theory suggests the Universe will come to an end when its ever-increasing rate of expansion causes all matter to fly apart?. The Big Rip. The Big Bang. The Big Crunch. The Big Easy.

A watt measures __________. how much electricity is consumed. the number of electrons moving past a specific point. resistance. voltage.

Which of the following planets, known as gas giants have no rings?. Neptune. Jupiter. Uranus. they all have rings.

Gas particles move __________. more slowly than liquid particles. more slowly than solid particles. more quickly than liquid particles. at the same rate as all other particles.

Absolute zero is __________. 0 degrees F. 0 degrees Celcius. - 263 degrees Celsius. - 32 degrees Fahrenheit.

What does the term forensic mean?. pertaining to law. pertaining to death. pertaining to medicine. pertaining to life.

Which of the following statements is not true?. The human female chin is usually more rounded or pointed than the human male chin. The human female pelvis is usually deeper than the human male pelvis. The human male skull is usually larger than the human female skull. The human male skull has a larger brow ridge than the human female skull.

A lunar eclipse occurs when __________. the earth moves into the moon's shadow. the sun blocks the moon from view. the earth moves into the sun's shadow. the moon moves into the earth's shadow.

What chemical can be used to detect blood, even if it's been wiped from a surface?. luminol. cyanide. ninhydrin. alcohol.

The function of an enzyme is to __________. provide energy for a chemical reaction. speed up a chemical reaction. become hydrolyzed during a chemical reaction. serve as an inorganic catalyst.

The DNA of a cell is found mainly in its __________. membrane. cytoplasm. vacuoles. chromosomes.

Most cells without a cell wall also lack __________. mitochondria. chloroplasts. cell membranes. vacuoles.

The cells that can easily be scraped from the lining of the mouth make up __________. connective tissue. epithelial tissue. supporting tissue. voluntary tissue.

The ___________ of an isotope is the time in which it takes half of an initial amount of an isotope to decay into something else. decay period. half-life. covalence coefficient. midlife decay point.

The end produces of protein digestion consists of __________. glucose. fatty acids. glycerol. amino acids.

Blood circulation from the lungs goes directly to the __________. legs. head. heart. digestive system.

The glucose content of the blood is regulated by __________. insulin and adrenaline. nerve stimulation. ACTH. progesterone.

Erosion and depletion are problems associated with __________. blood circulation. baldness. soil conservation. cardiovascular exercise.

The beneficial relationship between termites and the protozoa that inhabit their digestive systems is called __________. symbiosis. parthenogenesis. mitosis. phagocytosis.

A viral infection in humans that has a very long time between the initial exposure and the exhibiting of symptoms is __________. AIDS. measles. pneumonia. chicken pox.

Which substance can be used to treat drinking water of questionable purity?. ammonia. chlorine. hydrogen chloride. iodine.

An Anemometer measures __________. Temperature. Humidity. Wind Speed. Air Pressure.

The reaction between sodium, metal, and water can be classified as __________. decomposition. synthesis. single replacement. double replacement.

Nitrates are very useful as __________. detergents. fertilizers. fuels. solvents.

A gaseous product of the fermentation of sugar is __________. carbon monoxide. carbon dioxide. sulfur dioxide. oxygen.

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?. 4 days. 8 days. 2 weeks. 1 month.

A magnetic compass points in the direction of the __________. true north. geographic North Pole. magnetic North Pole. local magnetic field.

The mass of 1 cubic meter of water is approximately __________. 1 kilogram. 10 kilograms. 100 kilograms. 1,000 kilograms.

A 1-kilogram mass is dropped from a height of 1 meter. Its kinetic energy just before it hits the ground is __________. 1 joule. 10 joules. 100 joules. 1,000 joules.

A magnifying glass is what kind of lens used on objects how far away?. convex lens used closer than one focal length. convex lens used closer than one focal length. convex lens used beyond one focal length. concave lens used beyond one focal length.

Frictional forces usually do NOT __________. oppose motion. decrease kinetic energy. increase potential energy. produce wear.

A 120-volt electrical power supply produces 1/2 ampere to the load. The power delivered is __________. 60 watts. 60 ohms. 240 watts. 240 ohms.

The category of weather system with the highest velocity winds is the __________. thunderstorm. tornado. hurricane. sea breeze.

The member of the solar system with the shortest period of solar revolution is a __________. planetary satellite. asteroid. planet. comet.