WGU C165 LATEST REVIEW ALL QUESTIONS AND
ANSWERS SURE A+
✔✔Law - ✔✔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.
✔✔Observation - ✔✔Information obtained through the senses.
✔✔evidence - ✔✔proof
✔✔Data - ✔✔Facts and statistics collected together for reference or analysis
✔✔Big Bang Theory - ✔✔Cosmological model that explains the sudden development of
the universe through expansion from a hot, dense state.
✔✔plate tectonics - ✔✔A theory stating that the earth's surface is broken into plates that
move.
✔✔atomic theory - ✔✔a theory that states that all matter is composed of tiny particles
called atoms.
,✔✔gram - ✔✔a metric unit of mass equal to one thousandth of a kilogram.
✔✔meter - ✔✔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.
✔✔second - ✔✔SI base unit for time
✔✔Celsius - ✔✔Metric unit for measuring temperature; On this scale water freezes at
zero and boils at 100.
✔✔Kelvin - ✔✔The SI base unit of temperature
✔✔liter - ✔✔Basic unit of volume in the metric system
✔✔Metric Prefixes - ✔✔Giga, Mega, Kilo, deci, centi, milli, micro, nano
✔✔derived unit - ✔✔A unit defined by a combination of base units
✔✔direct relationship - ✔✔a relationship in which one variable increases with an
increase in another variable
✔✔inverse relationship - ✔✔a relationship in which one variable decreases when
another variable increases
✔✔Speed - ✔✔The distance an object travels per unit of time
✔✔Velocity - ✔✔Speed in a given direction
✔✔Acceleration - ✔✔the rate at which velocity changes over time; an object accelerates
if its speed, direction, or both change
✔✔distance - ✔✔The length of a path between two points
✔✔Displacement - ✔✔Distance and direction of an object's change in position from the
starting point.
✔✔Balance force - ✔✔Equal forces acting on one object in opposite direction. These
forces then give a 0 net force, causing the object to stay in place.
✔✔unequal 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.
, ✔✔net force - ✔✔The combination of all forces acting on an object
✔✔Newton's First Law - ✔✔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.
✔✔Mass - ✔✔the amount of matter in an object
✔✔Inertia - ✔✔The tendency of an object to resist a change in motion
✔✔Newton's Second Law - ✔✔Force equals mass times acceleration
✔✔Newton's Third Law - ✔✔For every action there is an equal and opposite reaction
✔✔Friction - ✔✔A force that opposes motion between two surfaces that are in contact
✔✔Gravity - ✔✔Gravity is the force by which a planet or other body draws objects
toward its center. The force of gravity keeps all of the planets in orbit around the sun.
✔✔gravitational force - ✔✔an attractive force that acts between any two objects
✔✔Momentum - ✔✔the force or speed with which something moves
✔✔law of conservation of momentum - ✔✔One of the most powerful laws in physics is
the law of momentum conservation. ... For a collision occurring between object 1 and
object 2 in an isolated system, the total momentum of the two objects before the
collision is equal to the total momentum of the two objects after the collision.
✔✔work - ✔✔Force exerted on an object that causes it to move
✔✔Energy - ✔✔the ability to do work
✔✔potential energy - ✔✔Energy that is stored and held in readiness
✔✔kinetic energy - ✔✔the energy an object has due to its motion
✔✔gravitational potential energy - ✔✔Energy stored by objects due to their position
above Earth's surface.
✔✔chemical potential energy - ✔✔the energy stored in the chemical bonds of a
substance
✔✔elastic potential energy - ✔✔the energy of stretched or compressed objects
ANSWERS SURE A+
✔✔Law - ✔✔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.
✔✔Observation - ✔✔Information obtained through the senses.
✔✔evidence - ✔✔proof
✔✔Data - ✔✔Facts and statistics collected together for reference or analysis
✔✔Big Bang Theory - ✔✔Cosmological model that explains the sudden development of
the universe through expansion from a hot, dense state.
✔✔plate tectonics - ✔✔A theory stating that the earth's surface is broken into plates that
move.
✔✔atomic theory - ✔✔a theory that states that all matter is composed of tiny particles
called atoms.
,✔✔gram - ✔✔a metric unit of mass equal to one thousandth of a kilogram.
✔✔meter - ✔✔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.
✔✔second - ✔✔SI base unit for time
✔✔Celsius - ✔✔Metric unit for measuring temperature; On this scale water freezes at
zero and boils at 100.
✔✔Kelvin - ✔✔The SI base unit of temperature
✔✔liter - ✔✔Basic unit of volume in the metric system
✔✔Metric Prefixes - ✔✔Giga, Mega, Kilo, deci, centi, milli, micro, nano
✔✔derived unit - ✔✔A unit defined by a combination of base units
✔✔direct relationship - ✔✔a relationship in which one variable increases with an
increase in another variable
✔✔inverse relationship - ✔✔a relationship in which one variable decreases when
another variable increases
✔✔Speed - ✔✔The distance an object travels per unit of time
✔✔Velocity - ✔✔Speed in a given direction
✔✔Acceleration - ✔✔the rate at which velocity changes over time; an object accelerates
if its speed, direction, or both change
✔✔distance - ✔✔The length of a path between two points
✔✔Displacement - ✔✔Distance and direction of an object's change in position from the
starting point.
✔✔Balance force - ✔✔Equal forces acting on one object in opposite direction. These
forces then give a 0 net force, causing the object to stay in place.
✔✔unequal 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.
, ✔✔net force - ✔✔The combination of all forces acting on an object
✔✔Newton's First Law - ✔✔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.
✔✔Mass - ✔✔the amount of matter in an object
✔✔Inertia - ✔✔The tendency of an object to resist a change in motion
✔✔Newton's Second Law - ✔✔Force equals mass times acceleration
✔✔Newton's Third Law - ✔✔For every action there is an equal and opposite reaction
✔✔Friction - ✔✔A force that opposes motion between two surfaces that are in contact
✔✔Gravity - ✔✔Gravity is the force by which a planet or other body draws objects
toward its center. The force of gravity keeps all of the planets in orbit around the sun.
✔✔gravitational force - ✔✔an attractive force that acts between any two objects
✔✔Momentum - ✔✔the force or speed with which something moves
✔✔law of conservation of momentum - ✔✔One of the most powerful laws in physics is
the law of momentum conservation. ... For a collision occurring between object 1 and
object 2 in an isolated system, the total momentum of the two objects before the
collision is equal to the total momentum of the two objects after the collision.
✔✔work - ✔✔Force exerted on an object that causes it to move
✔✔Energy - ✔✔the ability to do work
✔✔potential energy - ✔✔Energy that is stored and held in readiness
✔✔kinetic energy - ✔✔the energy an object has due to its motion
✔✔gravitational potential energy - ✔✔Energy stored by objects due to their position
above Earth's surface.
✔✔chemical potential energy - ✔✔the energy stored in the chemical bonds of a
substance
✔✔elastic potential energy - ✔✔the energy of stretched or compressed objects
