AFOQT Physical Science Practice Test questions with verified correct answers 2023.

A long Nail is heated at one end. After a few seconds, the other end of the nail becomes equally hot. What type of heat transfer does this represent? A.Advection B.Conduction C.Convection D.Radiation Conduction The measure of energy within a system A.Temperature B.Convection C.Entropy D.Thermo-dymanics E. Heat Heat How do two isotopes of the same element. A.They have different number of protons. B.They have different number of neutrons. C.They have different number electrons D.They have different charges E.They have different atomic numbers They have different number of neutrons Which type of nuclear process features atomic nuclei splitting to form smaller nuclei A.Fission B.Fusion C.Decay D.Ionization E.Chain Reaction Fission The process whereby a radioactive element releases energy slowly over a long period of time to lower its energy and become more stable is best describe as A.Combustion B.Fission C. Fusion D.Decay E. Radioactivity Decay What unit describes the frequency of a wave? A.Herts (Hz) B.Decibals(dB) C.Meters (m) D.Meters per second E.Meters per second square Hertz (Hz) Which of the following is an example of kinetic energy being converted to potential energy? A. A child sliding down a hill B A cyclist coasting on his way up a hill C.A pilot deploying airbrakes on approach to land. D.A motorist swerving to avoid a deer. E.A pair of billiard balls colliding and rebounding off each other A cyclist coasting on his way up a hill The boiling of water is an example of A.Sublimation B.Condensation C.Neutralization D.Chemical change E.Physical change Physical Change The center of an atom is called A.Nucleus B.Nuclide C.Neutrino D.Electron Cloud E.Electrolyte Nucleus When a solid is heated and transferred directly to a gaseous phases, this process is called A.Sublimation B. Fusion C.Diffusion D. Condensation E.Fission Sublimation What property of light explains why the pencil in a glass of water appears to be bent? A.Reflection B.Refraction C.Angle of Incidence =Angle of Reflection D.Constructive interference E.Destructive Interference Refraction Which scientist was responsible for developing the format of a modern periodic table? A.Faraday B.Einstein C.Hess D.Mendeleev E.Oppenheimer Mendeleev The density of a material refers to its: A.Mass per unit volume B.Mass per unit length C.Mass per unit surface area D.Volume per unit surface area E.Volume per unit length Mass per unit volume The precision of a set of experimentally obtained data points refers to: A.How accurate the data points are B.How many error the data points contain C.How close the data points are to the mean of the data D.How close the data points are to the predicted results E.How close the set of data is to a normal distribution How close the points are to the mean of the data Current, or the amount of electricity the is flowing, is measured in A.Volts B.Watts C.Ohms D.Farads E.Amperses Amperes A solar eclipse can only occur if: A: The earth and the sun are on the same side of the moon B.The earth is between the sun and the moon C. The moon is between the earth and the sun D.The sun is between the earth and the moon E.The moon is full The moon is between the the earth and the sun What property of motion explains why a passenger in a turning car feel pulled toward the outside of the turn A.Centripetal Force B.Inertia C.Normal Force D.Impulse E.Torque Inertia According to the Ideal Gas Law, if a certain amount of gas is being held at a constant volume, and the temperature is increase, what will happen? A.The mass of the gas will increase B.The pressure of the gas will increase C.The density of the gas will decrease D.The mass of the gas will decrease E.The pressure of the gas will decrease The pressure of the gas will increase What wave characteristics is related to the loudness of a sound? A.Frequency B.Amplitude C.Wavelength D.Velocity E.Period Amplitude Which of the following scenarios is NOT an example of a person applying work to a book/ A. A book is packed up from the floor and put on a shelf B. A book is pushed across a table floor C.A back holding a book is carried across the room D. A book is held and then released so that it falls to the ground. E.A book is thrown vertically into the air A book is held and then released so that it falls to the ground Under natural conditions, large quantities of organic matter decay after each year's plant growth has completed. As a result of such conditions A.Many animals are deprived of adequate food supplies B.Soil erosion is accelerated C.Soils maintain their fertility D.Earthworms are added to the soil E. Pollution Increases Soils maintain their fertility The thin, near layer that forms the front pat of the eyeball is called the: A.Pupil B.Iris C.Lens D.Retina E.Corea Corea The most likely reason why dinosaurs became extinct was that they: A.Were killed by erupting volcanoes B.Were eaten as adults by the advancing mammalian groups C.Failed to adapt to a changing environment D.Killed each other in combat E.Were destroyed by meteorites Failed to adapt to a changing environment Which of the following is a chemical change? A. Magnetizing a rod of iron B.Burning one pound of coal C. Mixing flake graphite with oil D.Vaporizing one gram of mercury in a vacuum E. Melting Ice B. Burning one pound of coal A person with high blood pressure should? A.Take frequent naps B. Avoid Salts C. Eat only ionized salt D. Exercise vigorously E.Avoid Proteins Avoid Salts The chief nutrient in lean meat is: A:Starch B. Protein C.Fat D.Carbohydrates E. Vitamin B Protein