WGU C165 Questions and Answers Already Graded A

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WGU C165 Questions and Answers Already Graded A The study of energy and forces of matter ✔✔Physics The study of the properties of matter and how matter changes; atoms, molecules 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

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