2024 WGU C165 Version 3 Complete Questions & Answers (Solved) 100% Correct
- Chemistry
Answer: the study of atoms and molecules, their structures and their interactions to form substances
- Physics
Answer: the study of forces and energy
- Earth Science
Answer: Earth's structure and composition and Earth's changes
- controlled experiment
Answer: An experiment in which only one variable is manipulated at a time.
- independent variable
Answer: The variable being changed or controlled by the experimenter
- dependent variable
Answer: The outcome factor; the variable that may change in response to manipulations of the independent variable.
- control variable
Answer: A variable that is kept constant during a controlled experiment.
- observational study
Answer: observes individuals and measures variables of interest but does not attempt to influence the responses
- laboratory experiment
Answer: Experiment in which conditions are highly controlled in an artificial environment
- Physical Model
Answer: A physical representation of an object. Prototypes and appearance models are physical models.
- conceptual model
Answer: a verbal or graphical explanation for how a system works or is organized
- mathematical model
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Answer: one or more equations that represent the way a system or process works (formulas)
- computer model
Answer: detailed computer programs that solve a set of complex mathematical formulas
- principle of falsification
Answer: a scientific theory must lead to testable hypotheses that can be disproved if they are wrong
- Hypothesis
Answer: A testable prediction, often implied by a theory
- Theory
Answer: a statement that attempts to explain why things are the way they are and happen the way they do. supported by scientific evidence
- Law
Answer: Statement supported by scientific evidence and repeated experiments
- scientific investigation
Answer: plan for asking questions and testing possible answers
- derived quantities
Answer:
Speed - m/s area- m2 volume- m3 density- kg/m3
- SI system
Answer: International System of units based on the metric system and units derived from the metric system
- Meters
Answer: (m) base unit for length
- Second
Answer: (s) SI base unit for time
- Kelvin
Answer: SI unit for temperature
- Mega
Answer: M 10^6 1,000,000
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- kilo
Answer: 1000
- deci
Answer: 10^-1 (0.1)
- centi
Answer: 10^-2 (0.01)
- milli
Answer: 10^-3 (0.001)
- micro
Answer: 10^-6 (0.000001)
- nano
Answer: 10^-9 (0.000000001)
- derived unit
Answer: A unit defined by a combination of base units
- direct relationship
Answer: a relationship in which one variable increases with an increase in another variable (distance traveled by a car and gasoline used)
- inverse relationship
Answer: a relationship in which one variable decreases when another variable increases.(Greater the speed, less time it takes)
- Speed
Answer: how fast an object is moving. (m/s) (mph) (km/s)
- Velosity
Answer: the speed of something in a given direction.
- Acceleration
Answer: the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change
- Force
Answer: A push or a pull
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