WGU C165, Top Exam Questions and answers, 100% Accurate, graded A+

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WGU C165, Top Exam Questions and answers, 100% Accurate, graded A+ The study of energy and forces of matter - ✔✔-Physics The study of the properties of matter and how matter changes; atoms, mo... lecules and their interactions to form substances - ✔✔-Chemistry the study of the moon, stars, and other objects in space - ✔✔-astronomy The scientific study of earth and the universe around it including structure, materials and processes - ✔✔-Earth Science The experimental factor that is manipulated; the variable whose effect is being studied. - ✔✔- independent variable The measurable effect, outcome, or response in which the research is interested. - ✔✔-dependent variable Structures that scientists build to represent something else. - ✔✔-Physical Model a verbal or graphical explanation for how a system works or is organized - ✔✔-conceptual model A description of a system using mathematical concepts and language like an equation. - ✔✔- mathematical model a computer program that models an event or object - ✔✔-computer model Only falsifiable statements can be subject to scientific inquiry - ✔✔-principle of falsification a statement that is worded so that it is falsifiable, or disprovable, by experimental results - ✔✔- falsifiable statement Concise statement that summarizes the results of many observations and experiments - ✔✔-Law A well-tested explanation for a wide range of observations or experimental results. - ✔✔-scientific theory The theory that the universe originated in a huge explosion that released all matter and energy. - ✔✔- Big Bang Theory Sections of the Earth's crust that move due to convection currents. - ✔✔-tectonic plates The hypothesis that the continents slowly move across Earth's surface. - ✔✔-continental drift International System of units based on the metric system and units derived from the metric system - ✔✔-SI system kilogram (kg) - ✔✔-SI unit for mass meter (m) - ✔✔-SI unit for length seconds (s) - ✔✔-SI unit for time Kelvin (K) - ✔✔-SI unit for temperature prefix used in the International System to indicate a power of 10 - ✔✔-SI prefix centi (c) - ✔✔-SI prefix meaning 0.01 milli (m) - ✔✔-SI prefix meaning 0.001 kilo (k) - ✔✔-SI prefix meaning 1,000 Micro - ✔✔-SI prefix meaning .000001 Nano (n) - ✔✔-SI prefix meaning .000000001 Mega (M) - ✔✔-SI prefix meaning 1,000,000 The distance an object travels per unit of time - ✔✔-Speed Amount of space occupied by an object - ✔✔-Volume Mass per unit volume - ✔✔-Density Mass divided by volume D=m/v - ✔✔-Density formula a relationship in which one variable increases with an increase in another variable or vice versa - ✔✔- direct relationship a relationship in which one variable decreases when another variable increases and vice versa - ✔✔- inverse relationship defined in terms of standards - ✔✔-base quantity a physical aspect described by a combination of base quantities - ✔✔-derived quantity The speed of an object in a particular direction - ✔✔-Velocity Change in velocity divided by the time it takes for the change to occur - ✔✔-Acceleration Speeds up Slows down And/or Changes direction - ✔✔-Acceleration occurs when an object A push or pull exerted on an object - ✔✔-Force Newton (N) - ✔✔-SI unit for force The combination of all forces acting on an object - ✔✔-net force forces acting on an object that combine and form a net force of zero - ✔✔-balanced forces Forces that produce a nonzero net force, which changes an object's motion - ✔✔-unbalanced forces (An object continues in uniform motion in a straight line/ at rest unless a resultant force acts.) The net force on an object is the cause of its acceleration - ✔✔-Newton's First Law The tendency to keep the same motion- remaining at rest or maintaining the same velocity - ✔✔-Inertia The acceleration of an object depends on the mass of the object and the amount of force applied. F=ma - ✔✔-Newton's Second Law For every action there is an equal and opposite reaction - ✔✔-Newton's Third Law The force that two surfaces exert on each other when they rub against each other - ✔✔-Friction The force of friction between two objects that are moving against each other - ✔✔-kinetic friction frictional force that prevents two surfaces from sliding past each other - ✔✔-static friction A force of attraction between objects that is due to their masses. - ✔✔-Gravity mass times velocity - ✔✔-linear momentum Momentum is conserved when two or more objects collide. Momentum may transfer but total momentum within the group stays the same - ✔✔-Law of conservation of momentum The ability of a material to bounce back after being disturbed - ✔✔-Elasticity Force exerted on an object that causes it to move - ✔✔-Work The ability to do work or cause change - ✔✔-Energy energy of motion - ✔✔-kinetic energy Energy that is stored and held in readiness - ✔✔-potential energy Force x distance - ✔✔-Work formula Joule (J) - ✔✔-SI unit for work and energy Energy stored by objects due to their position above Earth's surface. Increases with mass. - ✔✔- gravitational potential energy the energy stored in the chemical bonds of a substance - ✔✔-chemical potential energy Energy stored by something that can stretch or compress - ✔✔-elastic potential energy Energy carried by electromagnetic waves - ✔✔-Electromagnetic energy (light energy) The total energy of motion in the particles of a substance - ✔✔-thermal energy The rule that energy cannot be created or destroyed only transferred or converted - ✔✔-Law of Conservation of Energy the act or state of swinging back and forth with a steady, uninterrupted rhythm - ✔✔-Oscillation A state of balance to which an oscillating object eventually returns to after a disturbances is gone - ✔✔- Equilibrium waves that require a medium through which to travel - ✔✔-mechanical waves A wave that can transfer electric and magnetic energy through the vacuum of space - ✔✔- Electromagnetic waves A space where no particles of matter exist - ✔✔-Vacuum the oscillation is parallel to the direction the wave is traveling. - ✔✔-longitudinal wave Highest point of a wave - ✔✔-Crest Lowest point of a wave - ✔✔-Troug [Show More]

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