WGU C165 INTEGRATED PHYSICAL SCIENCES VERIFIED QUESTIONS AND ANSWERS Physics - The study of forces, energy, motion Chemistry - The study of atoms and molecules, their structures, and their interactions to form substances Earth science - The study

WGU C165 INTEGRATED PHYSICAL SCIENCES VERIFIED QUESTIONS AND ANSWERS Physics - The study of forces, energy, motion Chemistry - The study of atoms and molecules, their structures, and their interactions to form substances Earth science - The study of the Earth's structure and composition, and processes that change Earth essential attributes of science - Studies the natural world Uses testable ideas Relies on data from observations/experiments Presented for evaluation by other scientists Leads to further questions/research variables - The changing quantities in an experiment independent variable - What you change in an experiment on purpose dependent variable - The variable that changes because of an independent variable control variable - The variable(s) you don't want to study, need to be either eliminated or kept constant observational study - When systems are observed as they appear in nature, researchers do not attempt to change them physical model - A model of a physical phenomenon, such as a planetary system conceptual model - A model used to visualize things that cannot be seen, such as atoms mathematical model - A model that treats physical objects/phenomena using mathematical methods computer model - A detailed, complex model calculated by a computer principle of falsification - Principle that only falsifiable statements can be subject to scientific inquiry hypothesis - A testable statement about how something in nature works law - A concise statement that is supported by scientific evidence and repeated experiments, describes a widespread pattern in nature (what) theory - A statement that explains a wide range of observations, supported by a large body of scientific evidence (how/why) meter - Base unit of length kilogram - Base unit of mass second - Base unit of time kelvin - Base unit of temperature Derived units - What is produced when the base units/quantities are combined Speed - The name for the distance traveled divided by an interval of time Volume - Term for the amount of space an object occupies Liquid displacement - Method of determining the volume of an object by measuring the amount of liquid it displaces direct relationship - A relationship between two variables where increasing one increases the other, and vice versa inverse relationship - A relationship between two variables where increasing one decreases the other, and vice versa Velocity - A combination of speed and direction Acceleration - Term for any change in an object's speed and/or direction Force - Term for a push or a pull with direction and magnitude. You may not feel it. Net force - The sum of all forces acting on an object balanced forces - Term for forces that combine to produce a net force of 0 Newton's first law - An object in motion remains in motion unless acted on by a net force inertia - The tenancy to keep the same motion/velocity or remain at rest. Newton's first law Newton's second law - Net force = mass x acceleration (F = ma) Newton's third law - When one object exerts a force on a second object, the second object exerts a force of the same magnitude in the opposite direction on the first object ("For every action, an equal and opposite reaction") friction - The force that opposes the motion of an object on which it acts