General Science (GS) ASVAB

Which of the following terms is used to describe an organisms tendency to maintain its ideal internal state relative to properties such as temperature and pH?. Equilibrium. Homeostasis. Static. Thermoregulation.

The specialized bird feet shown in the illustration are a result of natural selection and are examples of: Adaptions. Genetic drift. Domestic breeding. Two random mutations.

Which measurement can be used to determine if earplugs are needed when working in a factory?. Watts. Amps. Decibels. Delta waves.

The graph shows changes over time in a population of bacteria added to a test tube of growth medium. What activity characterizes the growth cycle during phase ll?. Bacteria are weakening due to the accumulation of waste products. Bacteria are increasing in metabolic activity though not dividing. Bacteria are dying off rapidly from lack of nutrients and space. Bacteria are diving regularly by binary fission.

What is the major force that changes peat to coal?. Lift. Friction. Tension. Pressure.

Where are the reproductive organs located in angiosperms?. Stem. Roots. Leaves. Flowers.

Which of the following causes coastal tides?. Changes in temperature of the earth’s atmosphere and oceans. Gravitational attraction of the moon and sun on the earth. Variations in atmospheric pressure and weather patterns. Centrifugal force from the rotation of the earth and Sun.

Which characteristic is present in most crustaceans?. Fur. Spine. Blubber. Exoskeleton.

Why does a compass needle point towards the north?. Earth’s electromagnetic field. North star’s gravitational pull. The moon’s position aligns the needle. Satellites in space align with the needle.

What is the function of enzymes in the human body?. Monitor responses. Move the muscles. Control the breathing rate. Speed up chemical reactions.

What is the measuring unit for the pressure of a liquid?. Liter. Fathom. Gallons per minute. Pounds per square inch.

Which of the following experimental results demonstrates phototropism?. Plant leaves that are touched will move and fold together. Vining plants will wrap around an object placed near them as they grow. Shoots of seedlings planted upside down will grow upwards away from the ground. Stems of plants turned towards the dark area of a room will bend towards the window.

What is the primary reason that seasons in the Northern Hemisphere are out of phase with seasons in the Southern Hemisphere?. Tilt of the earth on its axis. Rotation of earth about its axis. Revolution of earth around the sun. Distance between earth and the sun.

What gas is a primary by-product of the photosynthetic process?. Carbon Monoxide. Carbon Dioxide. Nitrogen. Oxygen.

What are the names of the substances involved in a chemical reaction?. Gases and solids. Anodes and cathodes. Reactants and products. Solvents and solutes.

Which occupation would most likely be involved in genome mapping?. Gerontologist. Geneticist. Geophysicist. Geologist.

Carbon-14 is an example of an: Isotope. Metal. Catalyst. Enzyme.

If both parents of a child are carriers of a recessive allele for a disorder, what is the probability of their child getting it?. 25%. 33%. 50%. 75%.

If a diver takes a ballon that is filled with 1 cubic foot of air to a depth of 66 feet, what will happen to the ballon as the driver ascends back to the surface?. The ballon will get smaller. The ballon will began to expand to its original volume. The ballon will not change. The ballon will rupture.

Which of the following is a TRUE statement regarding air pressure and temperature when moving from sea level to the highest mountain top?. Both air pressure and average temperature increase. Both air pressure and average temperature decrease. Air pressure increases and average temperature decreases. Air pressure decreases and average temperature increases.

The process of transferring heat energy by electromagnetic waves is called: Radiation. Conduction. Sublimination. Convection.

In a balanced aquatic ecosystem, which of the following would have the greatest population?. Fish. Crabs. Sharks. Plankton.

Which of these is part of the structure of DNA?. Cortisol. Cytoplasm. Ribosome. Guanine.

What is the correct order of the water cycle? 1. Water vapor cools 2. Precipitation occurs 3. Evaporation occurs 4. Condensation occurs 5. Sunlight heats pond water. 1->4 ->2-> 5 ->3. 1-> 3-> 2 - 4 -> 5. 5-> 2-> 1-4 -> 3. 5 - 3-> 1-> 4 ->2.

Solubility can be defined as: The amount of moisture in the air. extent to which a substance dissolves in a solvent. Amount of salt present in a solvent. Extent to which gas dissolves in air.

Friction is a force that that: Causes objects to fall. Causes objects to move. Opposes motion between forces. Increases as potential energy increases.

What is an example of kinetic energy?. Car sitting on a lift. Flag hanging on a pole. Pillow leaning against a char. Pendulum swinging in a clock.

Water droplets forming on the inside of a cold windshield is an example of: Evaporation. Conduction. Vaporization. Condensation.

Which of the following will result in a chemical reaction?. mixing salt and water. heating candle wax. melting ice to water. adding milk to water.

Which of the following is a renewable resource?. Coal. Water. Natural gas. Oil.

The tympanic membranes are also known as the. eye lids. sinuses. ear drums. vocal cords.

Which of these is the best explanation of how a rock becomes smooth and rounded?. It was exposed to the sun for a long time. It was crushed. It was exposed to heavy winds occasionally. It was in a stream for a long time.

What is the symbol for a hydroxyl ion?. H+. OH-. H2O. H3O.

The chemical formula of a compound describes the elements the compounds contain and: The pH of the compound. The ratio of the elements in the compound. The color of the compound. The reactiveness of the compound.

To be classified as an organic substance, a substance must contain: Carbon. Hydrogen. Nitrogen. Oxygen.

When a lizard grows a tail to replace one that was lost, the process is called: Amputation. Mitosis. Chrysalis. Regeneration.

Which element has no neutrons in the nucleus of its atom?. Nitrogen. Helium. Hydrogen. Boron.

A human skin cell divides by: Replication. Meiosis. Mitosis. Mitochondria.

An astronomical body that revolves around a larger body is called?. A comet. A satellite. A constellation. Nucleus.

f you place bean seeds between moist paper towels and watch the stem and leaves appear, you will see a demonstration of: Transpiration. Germination. Fertilization. Pollination.

How many atoms are in a single molecule of water (H2O)?. One. Two. Three. Four.

The filament in an electric light bulb is made from?. Carbon. Tungsten. Copper. Steel.

Choking is prevented by the: diaphragm remaining down. vibration of the vocal cords. esophagus moving the food. epiglottis covering the voice box.

Which of the following is NOT a renewable source of energy?. Geothermal. Solar. Hydroelectric. Natural gas.

In humans, regeneration is limited to: Wounds. Limbs. Brain cells. Teeth.

What term describes a liquid’s resistance to flow?. Solubility. Permeability. Resistance. Viscosity.

The atomic number of an atom is the same as: The number of protons. The number of electrons. The mass of an atom. The number of neutrons.

On a Fahrenheit thermometer, the boiling point of water at sea level is: 100°. 180°. 212°. 373°.

The changing of any kind of matter from one form to another absorbs or releases: Dust. Inertia. Gravity. Energy.

What gas do most plants need to live?. Oxygen. Nitrogen. Argon. Carbon dioxide.

Marrow is a soft tissue found in: Muscle. Bone. Heart. Skin.

Which system enables oxygen to reach an individual cell in the human body?. Circulatory system. Nervous system. Digestive system. Endocrine system.

What does AM in AM radio stand for?. Altitude Microwave. Amplitude Modulation. Alternating Modulation. Accelerating Microwave.

The best definition of orogenesis is: bird watching. cellular reproduction. mountain building. cloud seeding.

Which animal undergoes metamorphosis?. Bird. Fish. Canine. Butterfly.

The process by which a solid becomes a gas is known as: boiling. sublimation. melting. diffusion.

Which animal does NOT reproduce by spawning?. Frog. Fish. Bird. Horse.

When your skin is cut and bleeding, what part of your blood works to clot the area and stop the bleeding?. White blood cells. Hemoglobin. Platelets. Plasma.

What is the main function of the body’s lymphatic system?. send and receive messages between the brain and different parts of the body. deliver oxygen and nutrients to the body’s cells. take in oxygen from the air and expel carbon dioxide. remove cellular debris and harmful substances.

Which animal in the food chain is warm blooded? Fly-> Frog→> Snake -> Hawk. Fly. Frog. Snake. Hawk.

The seven levels of taxonomic classification from general to specific are: kingdom,class,order,phylum family, genus, species. kingdom,phylum,class, family, order, genus, species. kingdom, phylum, class, order, family, genus, species. kingdom, class, phylum, order, family, genus, species.

Kinetic energy is the energy that: is produced by sound waves. an object potentially has. is possessed by a moving object. results from the attraction of two magnets.

The temperature at which a substance’s solid and liquid states exist in equilibrium is its: melting point. boiling point. anti-freezing point. concentration point.

Particles that orbit the nucleus of an atom are: anions. electrons. positrons. photons.

Earth is somewhat shielded from harmful ultraviolet radiation by the: Van Allen belt. thermosphere. ozone layer. troposphere.

Climate is: the current weather conditions. patterns of weather over long periods of time. not an area of scientific study. a series of chemical reactions.

Which of the following is most responsible for oceanic tides?. the orbit of the Earth around its own axis. the magnetic polarity of the Earth. the orbit of the Moon around the Earth. the orbit of the Earth around the Sun.

The fact that the Earth is tilted as it revolves around the Sun creates which phenomenon?. Life. Plate tectonics. Wind. Seasonality.

What is another name for the chemical formula Nac?. Water. Salt. Antifreeze. Aluminum.

The rate at which work is done is called: power. Energy. velocity. momentum.

Which scale measures the acidity or alkalinity of a substance?. pH. Moh. metric. Celsius.

According to their locations on the periodic table, Argon (Ar) and Neon (Ne) are: tonic. radioactive. liquid metals. noble gases.

Which branch of science deals with the study of earthquakes?. topography. cartography. seismology. physiology.

Which of the following undergoes metamorphosis?. bird. toad. bear. seal.

Which of the following is a type of contact force?. friction. gravity. electrical. magnetism.

Which of the following is the primary force acting on a floating object?. magnetism. buoyancy. torsion. tension.

What are the two main gases that make up stars?. Hydrogen and helium. Nitrogen and oxygen. Ozone and ether. Argon and Carbon Dioxide.

Which of the following is caused by pathogenic bacteria?. stroke. influenza. tuberculosis. common cold.