ASVAB General Science Practice Test

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• Which of the following best describes animals in the phylum Echinodermata?
• What does increasing the mass of an object do to its inertia according to Newton's second law?
• Which enzyme is responsible for converting polypeptides into amino acids?
• What does the autonomic nervous system regulate?
• What is the term for the area of the earth where all living things exist?
• Which of the following best describes the function of mitochondria?
• What is the process of dividing a cell into two identical cells called?
• What is the primary composition of the Monera kingdom?
• What defines the 'diastolic' phase in the cardiac cycle?
• What happens during the decomposition of hydrogen peroxide?
• Which brain structure is mainly responsible for coordinating motor activity?
• What do arteries primarily do in the circulatory system?
• What phenomenon describes the bending of a wave due to a change in its speed?
• An astronaut measures his weight on the moon and gets a reading of 150 N. If his mass is about 90 kg, how fast can he expect to accelerate in free fall?
• What significant feature is found in the stratosphere?
• What is the function of the smooth endoplasmic reticulum?
• What type of lens is thinner at the center than at the edges?
• When the Earth moves between the sun and the moon, what is this event called?
• What field of study is meteorology concerned with?
• What are asteroids also referred to as when they enter the Earth's gravitational field?
• "Waves" of heat can be seen above a hot stove element. This is an example of:
• For elements composed of single atoms, which statement is true?
• Newton's second law of motion is commonly referred to as what?
• What role do fungi primarily play in ecosystems?
• What are the two main parts of the nervous system?
• What defines an element in chemistry?
• What is the role of catalysts in chemical reactions?
• What are the fast-flowing, narrow air currents located between the troposphere and stratosphere called?
• What is the general term for all forms of moisture that fall from the atmosphere?
• What does a pH scale measure?
• Which of the following are two types of tracheophytes?
• What happens to water's pH when it is mixed with an acid?
• Which process is used to date ancient rocks and fossils using the decay of radioactive isotopes?
• What is the primary form of rock that results from the cooling of lava?
• Which unit is used to measure pressure?
• What kind of health issues can result from a deficiency of vitamin B2?
• What is an atom called when it has a positive or negative charge?
• What comprises 99.9% of the mass of the solar system?
• Which of the following represents a physical change but not a chemical change?
• What is the primary function of platelets in the human body?
• Which of the following rocks is the result of a chemical process?
• The measure of acidity or basicity in a solution is indicated by what scale?
• In terms of pH, how does a lower substance pH relate to acidity?
• What force resists relative motion between two bodies in contact?
• What type of mirror is known as a converging mirror?
• Which group of organisms is characterized as the simplest eukaryotes?
• What type of environment do deciduous trees typically thrive in?
• What does the electromagnetic spectrum measure?
• What does a pH higher than 7 indicate?
• What does "volume" measure?
• From where does blood enter the heart after circulating through the body?
• The tendency to reflexively startle at a loud noise is controlled by which part of the nervous system?
• What is the primary component of the electromagnetic spectrum?
• What is the primary feature of the taiga biome?
• What mnemonic assists in recalling the hierarchy of biological classification?
• Which organ absorbs water and minerals back into the body?
• Which vitamin deficiency can lead to weakness and skin infections?
• What does the metric prefix "hecto-" represent?
• Which structure plays a critical role in storing water and nutrients in plant cells?
• What does mass measure in terms of an object?
• What type of change is sublimation?
• What is the primary function of capillaries in the circulatory system?
• Which of the following is a characteristic of an ecosystem?
• What are comets primarily made of?
• What role does sodium metal play in the chemical reaction with chlorine gas?
• Which hormone is primarily produced by the ovaries?
• Which is the largest of the terrestrial planets?
• According to Newton's law of motion, what will happen to an object at rest?
• In which type of rock are fossils most likely found?
• What do compasses work by reacting to?
• Given two moving objects, a 50 kg person and a 10 kg dog, which statement about their scalar momenta is true, assuming the dog has the greater speed?
• What are the products of photosynthesis?
• What primarily distinguishes grasslands from forests?
• What does the unit "Joule" represent?
• What type of weather phenomenon is indicated by thick gray clouds and heavy rain?
• What type of symmetry do starfish exhibit?
• The overall charge on a non-ionized atom is:
• What pH value represents most basic substances?
• Which term refers to a large region of the earth?
• What is a property of a convex lens?
• What primarily defines the habitat of marine biomes?
• What is the function of veins in the circulatory system?
• What structure acts as a flap covering the trachea to prevent food from entering the airway?
• What is meant by the point of absolute zero?
• Which field of science deals with the properties, changes, and interactions of matter and energy?
• Which type of nematode is often considered a parasite?
• What is the smallest component of an element?
• What is the primary function of the pulmonary artery?
• Which type of rock is formed from the hardening of molten rock?
• What is the characteristic feature of phylum Porifera?
• What is the relationship between the pH value and hydrogen ion concentration?
• What is the unit of force?
• Which part of the brain controls involuntary actions such as breathing and swallowing?
• What are small pieces of space rock and metal called?
• Which chamber of the heart pumps oxygenated blood to the body?
• Which of the following is a function of red blood cells?
• Which of the following substances releases positively charged hydrogen ions (H+) into water?
• Which characteristic is common in the structure of a plant cell compared to an animal cell?
• The process of water entering the atmosphere from the leaves of plants is known as:
• In which organelle of a eukaryotic cell does DNA replication take place?
• What is the formula to convert Fahrenheit to Celsius?
• What is the approximate temperature in Kelvin at which water boils?
• What is the correct taxonomic rank order from most inclusive to least inclusive?
• In the classification of living organisms, which is the most general taxonomic category?
• What gases are predominantly found in the troposphere?
• During which geological era did dinosaurs primarily exist?
• Which of the following formulas represents power?
• How is Celsius converted to Kelvin?
• What are the common prefixes indicating cloud elevation?
• What is the unit of power known as?
• What is the main difference between meiosis and mitosis regarding cell division?
• What do neutrons contribute to an atom?
• As part of the water cycle, water enters the atmosphere as a gas through which process?
• In ecology, what does the term 'intertidal zone' refer to?
• Which of the following methods involves the transfer of heat by direct molecular contact?
• What phenomenon causes the moon to appear darkened during a lunar eclipse?
• What system is responsible for moving blood through the body?
• What is the main purpose of the scientific method?
• What is the role of the medulla in the human body?
• What does the term biofact refer to?
• What does "Sapiens" mean in the term "Homo Sapiens"?
• What is the main factor that makes the tundra unique among biomes?
• What is often referred to as the control center of a cell?
• What type of layer constitutes the upper part of the lithosphere?
• Which group includes organisms that decompose organic material?
• Which layer of the atmosphere contains all weather activity?
• What is the Precambrian eon known for?
• Which blood vessels are responsible for carrying oxygenated blood away from the heart?
• Which kingdom does fungi belong to?
• Which of the following phenomena occurs in the mesosphere?
• How long does it take for the moon to complete one full revolution around the Earth?
• What is the purpose of a magnifying lens?
• What is the unit of mass in the SI system?
• Which muscle type is responsible for involuntary movements and is found in the heart?
• Blood flows from which part of the heart to the lungs?
• Which body in the solar system is referred to as an icy mud ball?
• What are the four main human blood types?
• What is the primary function of ribosomes in a cell?
• Which system is involved in food processing and waste elimination?
• Which of the following roles do centrioles play in cellular processes?
• What is the composition of the outer core of the Earth?
• What are comets primarily composed of?
• In ecological terms, what does the term "biodiversity" refer to?
• Which of the following is a unicellular kingdom that contains a nucleus and organelles?
• Which pathway correctly describes how air moves when a person inhales?
• How is the structure of Earth's layers primarily defined?
• What is the primary process by which plants convert sunlight into energy?
• What is the main focus of ecology as a scientific discipline?
• Solution A has a pH of 8 and solution B has a pH of 11. Which statement is true?
• What are examples of igneous rock?
• Which of the following is NOT an animal phylum?
• How does Newton's law of gravitation describe the attraction between objects?
• At its thickest point, how deep is the Earth's crust?
• What phenomenon is responsible for meteoroids burning up as they enter the Earth's atmosphere?
• Which of the following layers of the atmosphere contains the ozone layer?
• What does the spinal cord primarily do?
• Which planet is furthest from the sun?
• What is the purpose of capillaries in the circulatory system?
• Which type of substance would have a pH close to 7?
• What is it called when a cold air mass overtakes a warm air mass?
• How many muscle types are classified within the human body?
• Comets are sometimes referred to as what?
• What organelle is primarily associated with the detoxification of drugs in the liver?
• What happens to water vapor after it has entered the atmosphere as part of the water cycle?
• When is a comet's tail typically visible?
• What is the characteristic of a solution with a pH of 14?
• What is the primary purpose of a compass?
• In which organelle does protein synthesis occur in eukaryotic cells?
• Where does protein synthesis primarily occur within a cell?
• Which unit measures work?
• According to Newton's first law of motion, what tends to happen to an object at rest?
• What is a product in a chemical reaction?
• What process involves observing the natural decay of radioactive elements?
• In a lunar eclipse, which celestial body is obstructed?
• What is the term for the area in which a group of populations live?
• Which cellular structure is primarily responsible for storing wastes and other materials?
• To which kingdom do gymnosperms belong?
• You are hiking through the Grand Canyon and notice the striated pattern of the rocks. These striations are most likely to be present in what type of rock?
• Which kingdom is considered the most primitive and consists of prokaryotic organisms?
• Which kingdom does a living thing, capable of photosynthesis and possibly a moss, belong to?
• During which process does a cell divide into two separate cells?
• Where does blood enter the heart from after oxygenation in the lungs?
• Which two parts compose the peripheral nervous system?
• Which of the following is the unit of time in the SI system?
• In an experiment with identical sound generators, which friend hears the sound first if one is underwater, one on wood, and one in air?
• What do we call meteoroids that pass through Earth's atmosphere?
• Where is the ionosphere located?
• What do Saturn, Jupiter, Uranus, and Neptune have in common?
• What is the primary characteristic of a concave lens?
• What describes phylum Annelida?
• Which vitamin deficiency can cause excessive bleeding?
• How is an ecosystem best described?
• What is the role of the hypothalamus in the body?
• What event involves the sun being temporarily obscured from view?
• Which blood type is known as the universal donor?
• What process characterizes heat transfer within a liquid or gas?
• What does the term 'systolic' refer to in the context of blood pressure?
• What part of the brain is primarily responsible for muscular coordination?
• Which of the following is a key component of the scientific method?
• What does an element's atomic number indicate?
• What process leads to the formation of metamorphic rocks?
• What type of eclipse occurs when the moon is directly between the Earth and the sun?
• Walking along the beach in Hawaii, which type of rock are you most likely to find?
• Where in the human body does blood receive oxygen during respiration?
• Which cellular organelle is responsible for synthesizing proteins that are exported from the cell?
• What is the primary cause of the Earth's seasons?
• Which biome is characterized by very low temperatures and brief growing seasons?
• What are the three main zones of a marine biome?
• What is one effect of jet streams on weather patterns?
• Which physiological process involves the transfer of gases in the lungs?
• What type of primitive plants are characterized by lacking true stems?
• What is the basic unit of mass in the metric system?
• Which type of joint can be found in the elbow and knees?
• What part of the nucleus is responsible for making ribosomes?
• What happens to an object's motion when an unbalanced force is applied?
• What is formed when an acid and a base react together?
• What is the formula for calculating momentum?
• What is the process called when a solid changes directly into a gas?
• What are the four layers of the atmosphere from lowest to highest?
• What type of animals are classified under phylum Coelenterata?
• The rings of Saturn are comprised primarily of:
• In terms of weather, what does 'precipitation' refer to?
• What is the primary organ responsible for regulating excretion in the human body?
• Which of the following best describes a habitat?
• What does a "group" in the periodic table refer to?
• What phenomenon occurs when the moon moves between the sun and Earth?
• In order from closest to farthest, which is the correct sequence of planets in our solar system?
• What structure forms spindle fibers during cellular division?
• Which body system is responsible for processing sound information?
• Which of the following is not a characteristic of comets?
• Which of the following traits is NOT determined by inheritance alone?
• What does the atomic number represent in an atom?
• What does the lithosphere consist of?
• What is the primary function of the renal system?
• Which subatomic particle carries a positive charge?
• What does pancreatic amylase primarily do?
• Which term describes a diverging mirror?
• Which gas is most abundant in Earth's atmosphere?
• What is the unit of length in the SI system?
• What is the function of mitochondria in a cell?
• What does a pH lower than 7 suggest?
• What do the two parts of a name in binomial nomenclature represent?
• If a spaceship fuel tank is 25 cm long and needs to be scaled up by 100 times, what will be its length in the actual spacecraft?
• Which structure acts as a control center for many simple reflexes?
• What does Newton's third law of motion state?
• What is the role of lipase in the digestive system?
• What primarily characterizes igneous rock?
• Which cellular structure is known as the control center of the cell?
• Which vitamin is essential for maintaining good bone health, particularly in preventing rickets?
• Which of the following is NOT a role of digestion?
• What unit is used to measure energy?
• What process results in the formation of four genetically distinct cells?
• What term describes the patterns of weather over long periods of time?
• The ozone layer is located in which level of the atmosphere?
• In which layer of the Earth's atmosphere do most weather events occur?
• What geological phenomenon typically occurs along faults?
• Which scientific field primarily focuses on understanding climate and atmospheric phenomena?
• What is the primary function of veins?
• What is the primary component of the Earth's atmosphere?
• What vitamin deficiency is associated with loss of appetite and beriberi?
• At what temperature does the mesosphere reach approximately?
• Which temperature can be found at the upper limit of the thermosphere?
• What is the primary method that allows certain plants to release water vapor into the atmosphere?
• What is the order of the electromagnetic spectrum from highest frequency to lowest frequency?
• During which phase does a lunar eclipse occur?
• Which organelle is responsible for digesting old organelles and foreign substances?
• Who consumed the most water based on the following amounts: Don: 1 liter, Sam: 1 gallon, Maria: 1 milliliter, Jenny: 1 quart?
• What is the term for meteors that strike the ground?
• What substance is characterized by a bitter taste and releases negatively charged hydroxyl ions (OH-) in water?
• The process of digestion provides which of the following benefits?
• What is the main role of arteries in the circulatory system?
• What instrument is used to measure wind speed?
• What substance produced by the liver aids in the digestion of fats?
• Which formula is used to convert Fahrenheit to Celsius?
• In human anatomy, what do hinge joints allow for?
• Which substance is critical for the physical digestion of emulsifying fat?
• Which divisions make up the autonomic nervous system?
• What is the freezing point of water in degrees Celsius, Fahrenheit, and Kelvin?
• What role does the left atrium play in the heart's function?
• Which characteristic is commonly used to classify organisms into different kingdoms?
• Which component of the nervous system is responsible for sending sensory information?
• What is the end result of the process of meiosis?
• What characteristic do arthropods, classified as invertebrates, possess?
• What is a light year used to measure?
• Which of the following is true about an atom?
• Which particles are primarily found in the ionosphere?
• Which method of heat transfer involves direct contact?
• Which of the following is NOT one of the four major geologic time periods?
• What is the interaction of living and nonliving things called?
• What term describes the relationship where one organism benefits while the other is not harmed?
• What deficiency is linked to rickets and tooth decay?
• The inner planets are also called _____ planets due to their composition.
• What is the formula for calculating speed?
• The mass number of an atom is equal to what?
• What distinguishes a community from an ecosystem?
• The primary function of the ribosomes in a cell is to synthesize what?
• What steps are involved in the scientific method?
• Which metric prefix represents one-thousandth of a unit?
• What is the correct chemical formula for dry ice?
• What temperature does water boil at under standard atmospheric conditions?
• What does the law of reflection state about angles?
• What system is responsible for controlling movement of joints?
• What is a common feature of organisms in phylum Nematoda?
• What is the classification of the kingdom that includes multicellular organisms that can perform photosynthesis?
• Members of which phylum are known for their segmented bodies and are commonly found in soil and aquatic environments?
• Which of the following best describes invertebrates?
• The nasal cavity is a part of which system?
• Which biome covers approximately three-quarters of the Earth's surface?
• Which planet is closest to the sun?
• What best describes the inner core of the Earth?
• Which heat transfer process results in the rise of heated fluids?
• What is the primary job of the right ventricle?
• What is the ecological term for a group of organisms that interacts with each other?
• In relation to sound waves, what is the result of an increase in frequency?
• The temperature of water in an open beaker is raised from 25° C to 50° C. Which of the following is NOT true of this change?
• What is formed when meteoroids enter the Earth's atmosphere and produce bright streaks of light?
• Which term describes the zone of Earth where life naturally occurs?
• What is formed when elements join together?
• Which element constitutes the majority of Earth's atmosphere?
• What type of living organisms are classified under the Fungi kingdom?
• What happens to meteoroids when they fall into Earth’s atmosphere?
• Which type of radiation is considered the most active?
• What type of climate is characteristic of deciduous forests?
• What is the correct order of the components in the urinary system?
• From closest to farthest of Earth's surface, what are the layers of the atmosphere?
• What is the term for the energy transfer that occurs when heat moves from a hotter object to a cooler object?
• What type of energy is involved in the process of photosynthesis?
• Which chamber of the heart is responsible for sending deoxygenated blood to the lungs?
• What is a cold front?
• Which animal phylum includes creatures such as jellyfish and corals?
• What best describes the process of diffusion in the body?
• A deficiency in which vitamin is associated with anemia?
• What is the consequence of two objects colliding elastically?
• What will happen when Player A and Player B collide while attempting to catch the same ball?
• Which group includes soft-bodied animals typically protected by a hard covering?
• What is the main byproduct of fermentation in organisms?
• Which term describes the collective regions where life interacts with the physical world?
• How many chromosomes do humans inherit from each parent?
• In biological terms, meiosis is significant for which type of reproduction?
• Which scientific principle relates the force, mass, and acceleration of an object?
• What is unique about the pulmonary artery?
• Which of the following correctly describes the unit Joule?
• What is the transfer of liquid between cell walls called?
• What process do plants use to make energy from light?
• What is the main function of the somatic nervous system?
• If an atom of hydrogen contained a neutron, what would this affect?
• Which blood type is referred to as the universal recipient?
• What is the term for heat transfer through electromagnetic waves?
• What are organisms in phylum Platyhelminthes commonly referred to as?
• Which of the following statements about acidity is accurate?
• Which of the following best describes heat?
• What is the primary function of the larynx?
• Which process describes the transformation of water vapor back into liquid water?
• Which of the following is a smaller component of nucleic acids?
• Which of the following best describes a biome?
• What pH range indicates an acidic solution?
• In which part of the digestive system are most nutrients absorbed into the bloodstream?
• The resulting offspring from a purebred dominant and a purebred recessive pea plant is called a(n):
• What is the result of a deficiency in vitamin B12?
• What type of star is classified as a "G2V star"?
• Deficiency of which vitamin is likely to contribute to nerve degeneration?
• Which types of planets does not include terrestrial planets?
• The term "Homo Sapiens" refers to which species?
• Which of the following is an example of an acid?
• Which layer of the Earth comprises the greatest percent of the planet's volume?
• What is the boiling point of water in degrees Celsius, Fahrenheit, and Kelvin?
• Which part of a cell is responsible for regulating what enters and exits?
• What is the average magnitude of force applied by the expanding spring in a dart gun with a projectile weighing 20 g that accelerates at 150 m/s²?
• Which element is known to be the best conductor of heat?
• What is the name given to large pieces of space rock?
• What is the primary responsibility of the endocrine system?
• What is the role of decomposers in an ecosystem?
• Which term refers to the rate at which work is performed?
• What phenomenon results from tectonic plate movements along faults?
• What phenomenon occurs when the source of sound waves or the listener is moving?
• If a 75 kg sailboat experiences an initial acceleration of 6 m/s² under a moderate wind, what would be the expected acceleration of a 225 kg sailboat with identical sail?
• What deficiency is known to cause night blindness, skin infections, loss of appetite, and diarrhea?
• What type of consumer eats only plants?
• Which of the following is NOT a biogeochemical cycle?
• What is the name of the space at the back of the mouth that connects the mouth to the esophagus?
• Which biological system is primarily responsible for hormone production in females?
• What is the primary function of the respiratory system?
• Which of the following is NOT a step in the scientific method?
• What is Halley's Comet largely composed of?
• What is the role of the right atrium in the heart?
• What does the Richter scale measure?
• What type of cloud is fog considered to be?
• What is the main role of the rough endoplasmic reticulum?
• What type of plant is characterized by having seeds that are not enclosed by an ovary?
• How is alcohol primarily absorbed into the body?
• Which vitamin deficiency is known to cause scurvy?
• What does a pH of 0 signify in terms of acidity?
• A convex lens is best described as:
• What is the primary function of the cerebellum?
• Which phylum includes segmented worms like earthworms?
• What is the primary function of the atmosphere?
• What is the absolute zero temperature in Celsius?
• Which layer of Earth's atmosphere is known for containing the ozone layer?
• What is the smallest particle of an element or compound that can exist independently while retaining its properties?
• If it is summer in Australia, which of the following months could it be?
• In physics, what does the term "work" imply?
• Which rock type is formed through sedimentation?
• Which of the following is a property of osmosis?
• Which type of cloud is least likely to indicate impending rain?
• Which solution among the given options has the lowest pH value and therefore the greatest number of hydrogen ions?
• Which planet is closest to the sun?
• What phenomenon occurs when Earth travels between the sun and the moon, blocking the sun's rays from reaching the moon's surface?
• Which of the following represents a strong acid on the pH scale?
• Which of the following organisms is an example of a saprotroph?
• What is cellulose primarily known for in plant cells?
• Which type of cells lacks membrane-bound organelles?
• What is a group of individuals that belong to the same species called?
• When light bends due to a change in speed as it moves between media, this phenomenon is known as?
• Which layer of the atmosphere is known for its weather phenomena?
• Which term is used to describe the long-term average of weather conditions in a specific area?
• What does the refractive index measure?
• What produces sound waves?
• What is the primary function of fiber in the diet?
• What process involves the transformation of liquid water into vapor?
• Which formula is used to convert Celsius to Fahrenheit?
• Which of the following is NOT one of the three multicellular kingdoms?
• What are the phases of mitosis in the correct order?
• What is the role of the Golgi body in a cell?
• Which of the following is a renewable source of energy?
• What is classified as the state of the atmosphere at any given time?
• How many kingdoms are recognized in biological classification?
• What pH value represents the most acidic substances?
• Where are tropical rainforests typically located?
• In which biome would you expect to find long periods of dry winter?
• The term "ion" refers to which of the following?
• What is lost when aeration of water occurs?
• What is defined as the product of force exerted on an object and the distance moved in the direction of that force?
• Which structure prevents food from entering the trachea during swallowing?
• What phenomenon occurs in the mesosphere?
• What pH value is considered neutral?
• What does the ozone layer do?
• What process occurs in the core of the sun?
• What circulatory function is primarily associated with the heart?
• What are the two main types of angiosperms?
• What characterizes the tundra biome?
• What part of the brain controls all voluntary activities and receives sensory input?
• What type of plant is characterized by the production of flowers?
• Which of the following is NOT an example of carbon release through respiration?
• Which air current is known for its influence on weather patterns across the United States?
• What does the chordata classification encompass?
• What aspect of the Earth does geology primarily study?
• Which vitamin is specifically associated with the prevention of beriberi?
• What is the primary function of the large intestine in the human digestive system?
• What type of bond occurs when electrons are transferred from one atom to another?
• What is the primary function of meiosis in organisms?
• What is the formula for calculating force?
• What is the outermost layer of the Earth known as?
• Which of the following is not a characteristic of the troposphere?
• What defines a biome in ecological terms?
• What are comets primarily made up of?
• Which of the following is true about tropical rainforests?
• Which major system is responsible for transporting oxygen in the human body?
• Which term refers to the creatures that have a defined skeletal structure?
• What is lipase mainly used for in the human body?