2024 WGU C165 Version 1 – 3 | Complete Questions & Answers (Solved) 100% Correct
2024 WGU C165 Version 1
Complete Questions & Answers (Solved) 100% Correct
- The study of energy and forces of matter
Answer: Physics - The study of the properties of matter and how matter changes; atoms,molecules and their
interactions to form substances
Answer: Chemistry - the study of the moon, stars, and other objects in space
Answer: astronomy - The scientific study of earth and the universe around it including structure,materials and
processes
Answer: Earth Science - The experimental factor that is manipulated; the variable whose effect isbeing studied.
Answer: independent variable - The measurable effect, outcome, or response in which the research isinterested.
Answer: dependent variable - Structuresthatscientists build to representsomething else.
Answer: Physical Model - a verbal or graphical explanation for how a system works or is organized
Answer: -conceptual model - A description of a system using mathematical concepts and language likean equation.
Answer: mathematical model - a computer program that models an event or object
Answer: computer model - Only falsifiable statements can be subject to scientific inquiry
Answer: principle offalsification - a statement that is worded so that it is falsifiable, or disprovable, byexperimental results
Answer: falsifiable statement - Concise statement that summarizes the results of many observations andexperiments
Answer: Law - A well-tested explanation for a wide range of observations or experimentalresults.
Answer: scientific theory - The theory that the universe originated in a huge explosion that releasedall matter and
energy.
Answer: Big Bang Theory - Sections of the Earth’s crust that move due to convection currents.
Answer: tectonic plates - The hypothesis that the continents slowly move across Earth’s surface.
Answer: -continental drift - International Systemof units based on the metric system and units derivedfrom the metric
system
Answer: SI system - kilogram (kg)
Answer: SI unit for mass - meter (m)
Answer: SI unit for length - seconds (s)
Answer: SI unit for time - Kelvin (K)
Answer: SI unit for temperature - prefix used in the International System to indicate a power of 10
Answer: SI prefix - centi (c)
Answer: SI prefix meaning 0.01 - milli (m)
Answer: SI prefix meaning 0.001 - kilo (k)
Answer: SI prefix meaning 1,000 - Micro
Answer: SI prefix meaning .000001 - Nano (n)
Answer: SI prefix meaning .000000001 - Mega (M)
Answer: SI prefix meaning 1,000,000 - The distance an object travels per unit of time
Answer: Speed - Amount of space occupied by an object
Answer: Volume - Mass per unit volume
Answer: Density - Mass divided by volume D=m/v
Answer: Density formula - a relationship in which one variable increases with an increase in anothervariable or vice
versa
Answer: direct relationship - a relationship in which one variable decreases when another variableincreases and vice
versa
Answer: inverse relationship - defined in terms of standards
Answer: base quantity - a physical aspect described by a combination of base quantities
Answer: derivedquantity - The speed of an object in a particular direction
Answer: Velocity - Change in velocity divided by the time it takes for the change to occur
Answer: -Acceleration
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2024 WGU C165 Version 2
Complete Questions & Answers (Solved) 100% Correct
- Speed
Answer: how fast an object is moving - Which of the following statements BEST describes the locations of volcanoes?
Answer: Most volcanoes are located along the edges ofsome continents or in chainsoff the
coast of continents. - Some plate boundaries have
Answer: active volcanoes but some don’t, and almost allvolcanoes are at boundaries. - The typical speed of a plate is
Answer: a few centimeters per year. - An atmospheric instability causes a column of air to rotate.
Answer: Tornado - A moist mass of air over warm ocean water condenses as it rises, forminga massive
spinning storm.
Answer: hurricane - This type of storm is common at cold fronts and often produces lightning.-
Answer: Thunderstorms - This is the most violent storm on Earth.
Answer: tornadoes. - A hurricane has an
Answer: eye in the center that is very calm. - Lightning is an
Answer: electric glow that can be seen during a storm. - Differences in temperature within Earth and within the plates result in
Answer: -processes that move plates. - A low-lying cloud ofsmall water dropletsthat reduces visibility to lessthan1 km (0.62 mi)
is called
Answer: fog - Which radiation can greenhouse gases absorb that nitrogen and oxygencannot?
Answer: Greenhouse gases can absorb infrared radiation, which nitrogen and oxygen cannot. - Which of the following are considered greenhouse gases?
Answer: carbon dioxideand methane - Which kind of plate boundary produced the Himalayas?
Answer: Two plates pushedinto each other to push the land upward and generate a mountain
range. - Greenhouse gases in Earth’s atmosphere
Answer: absorb infrared radiation emittedby the ground. - After absorbing incoming solar radiation, Earth emits mostly ,which is the
radiation associated with heat.
Answer: infrared radiation - The greenhouse effect .
Answer: helps keep Earth’s surface sufficientlywarm for life to exist - The greenhouse effect occurs because greenhouse gases Answer: -absorb infrared radiation emitted by the surface
- If more water vapor was present in Earth’s atmosphere,what would happento Earth’s
temperature?
Answer: The temperature would increase. - The most abundant greenhouse gas in volcanic eruptions is .-
Answer: water vapor - Solar radiation .
Answer: has been increasing over the past several billionyears - Which of the following is a natural processthat adds carbon dioxide to theatmosphere?
Answer: respiration - Plants remove carbon dioxide from the atmosphere and cutting downforests
Answer: increases the rate of global warming. - If the mass of the box increases, but the force remains the same, the box’sacceleration will
Answer: decrease - Why does San Francisco have earthquakes?
Answer: San Francisco lies along the boundary between the North American plate and the
Pacific plate. At this location,they are grinding past each other, occasionally slipping suddenly
along a transformfault.
- If the mass of an object increases
Answer: a given force will produce less acceleration. - When force increases
Answer: acceleration also increases, according to Newton’ssecond law. - The net force acting on an object moving in a straight line at a constantspeed
Answer: is zero - Friction is the force that
Answer: opposes motion of an object - A force of friction does not exist if
Answer: two objects are not touching. - If the distance is doubled, the force of gravity
Answer: decreases - Which of the following is the LEAST abundant in Earth’s atmosphere?
Answer: – Ozone is a very small fraction of a percent of Earth’s atmosphere and therefore nota
main component. - This gas is generally not reactive and is the most abundant in the atmosphere.
Answer: Nitrogen - This gas is used by plants to make organic compounds.
Answer: Carbon Dioxide - This gas also exists as a solid and liquid at Earth temperature and cyclesbetween the
atmosphere, land, and oceans.
Answer: Water Vapor - Describe how and why air density changes with changes in altitude.
Answer: Air density decreases with an increase in altitude because air particles have mass and
are pulled down by Earth’s gravity. - Density is defined as
Answer: mass divided by volume. - Nitrogen is about of the Earths atmosphere
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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 manipulatedat 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 interestbut does not attempt to
influence the responses - laboratory experiment
Answer: Experiment in which conditions are highly controlled inan 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 oris organized - mathematical model
Answer: one or more equations that represent the way a systemor process works (formulas) - computer model
Answer: detailed computer programs that solve a set of complexmathematical formulas - principle of falsification
Answer: a scientific theory must lead to testable hypothesesthat 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 areand 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 unitsderived 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: M10^6 1,000,000 - 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 anincrease in another variable
(distance traveled by a car and gasoline used) - inverse relationship
Answer: a relationship in which one variable decreases whenanother 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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