Integrated Physical Science C165 WGU Study Questions and Answers 2023 the study of forces, energy, motion - Correct Answer physics study of atoms and molecules, their structures, and their interactions to form various substances. - Correct Answer Chemistry Earth's structure and composition, as well as the processes that change Earth, such as volcanic and seismic activity. - Correct Answer Earth Science The study of the moon, stars, and other objects in space - Correct Answer astronomy An organized way of gathering and analyzing evidence about the natural world. - Correct Answer Science a measure of how close a series of measurements are to one another - Correct Answer Precision is a scientific method of expressing the magnitudes or quantities of important natural phenomena. There are seven base units in the system, from which other units are derived. Universal for comparing data. - Correct Answer SI the sciences concerned with the study of inanimate natural objects, including physics, chemistry, astronomy, and related subjects. - Correct Answer physical science the study of living things - Correct Answer life science An experiment in which only one variable is manipulated at a time. Or a condition that is being held constant - Correct Answer controlled experiment what is being changed - Correct Answer independent variable what is being measured - Correct Answer dependent variable In an experiment, the standard that is used for comparison - Correct Answer control studies attempt to understand cause-and-effect relationships. However, unlike experiments, the researcher is not able to control (1) how subjects are assigned to groups and/or (2) which treatments each group receives. ... Therefore, a sample survey is an example of an observational study. - Correct Answer Observational experiment or study a research investigation carried out in a naturally occurring setting - Correct Answer field study 1 / 3
Research done in a laboratory - Correct Answer laboratory study A physical representation of an object. Prototypes and appearance models are physical models. - Correct Answer Physical Model a verbal or graphical explanation for how a system works or is organized - Correct Answer conceptual model one or more equations that represent the way a system or process works - Correct Answer mathematical model A testable prediction, often implied by a theory - Correct Answer Hypothesis A hypothesis that has been tested with a significant amount of data. Explains why something happened. - Correct Answer Theory A law in science is a generalized rule to explain a body of observations in the form of a verbal or mathematical statement. Scientific laws (also known as natural laws) imply a cause and effect between the observed elements and must always apply under the same conditions. Explains how it happened not why. - Correct Answer Law Information obtained through the senses. - Correct Answer Observation proof - Correct Answer evidence Facts and statistics collected together for reference or analysis - Correct Answer Data Cosmological model that explains the sudden development of the universe through expansion from a hot, dense state. - Correct Answer Big Bang Theory A theory stating that the earth's surface is broken into plates that move. - Correct Answer plate tectonics a theory that states that all matter is composed of tiny particles called atoms. - Correct Answer atomic theory a metric unit of mass equal to one thousandth of a kilogram. - Correct Answer gram The meter is the basic unit of length in the SI system of units. ... The previous definition of the meter was one ten-millionth of the distance from the geographic north pole to the equator, measured over the earth's surface in a circle running through Paris, France. - Correct Answer meter SI base unit for time - Correct Answer second 2 / 3
Metric unit for measuring temperature; On this scale water freezes at zero and boils at
- - Correct Answer Celsius
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The SI base unit of temperature - Correct Answer Kelvin Basic unit of volume in the metric system - Correct Answer liter Giga, Mega, Kilo, deci, centi, milli, micro, nano - Correct Answer Metric Prefixes A unit defined by a combination of base units - Correct Answer derived unit a relationship in which one variable increases with an increase in another variable - Correct Answer direct relationship a relationship in which one variable decreases when another variable increases - Correct Answer inverse relationship The distance an object travels per unit of time - Correct Answer Speed Speed in a given direction - Correct Answer Velocity the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change - Correct Answer Acceleration The length of a path between two points - Correct Answer distance Distance and direction of an object's change in position from the starting point. - Correct Answer Displacement Equal forces acting on one object in opposite direction. These forces then give a 0 net force, causing the object to stay in place. - Correct Answer Balance force unbalanced forces cause a change in motion; speed. and/or direction. When two forces act in the same direction on an object, the net force is. equal to the sum of the two forces. When two unequal forces act in opposite directions. - Correct Answer unequal force The combination of all forces acting on an object - Correct Answer net force An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. - Correct Answer Newton's First Law the amount of matter in an object - Correct Answer Mass The tendency of an object to resist a change in motion - Correct Answer Inertia