Download 8th Grade Third Six Weeks Vocabulary

8th Grade Third Six Weeks Vocabulary
TERM
8.6A
Force
Balanced Forces
Unbalanced Forces
Net Force
At Rest
Speed
Direction
Motion
Friction
6.8D
Line Graph
Distance - Time Graph
X-Axis
Y-axis
Meter
Second
6.8C
Position
Direction
Speed
Motion
Average Speed
6.8A
Potential Energy
Kinetic Energy
Conservation of Energy
Energy Transformation
6.9C
Chemical Energy
Electrical Energy
Light Energy
Mechanical Energy
Thermal Energy
Radiant Energy
Nuclear Energy
Law of Conservation of
Energy
7.7A
Work
Distance
Force
8.6C
Newton’s Laws of Inertia
Inertia
Unbalanced forces
Newton’s Law of
Acceleration
DEFINITION
A push or pull that can change the motion of an object
Forces on an object that do not change the motion of the object; net force equals
zero
Forces on an object that cause change in the motion of the object
The sum of all the forces acting on an object
The state of an object when it is not in motion
The measurement of the rate of change of position with respect to time
The path that an object is moving or facing
A change in an object’s position, direction, or location
A force between two surfaces rubbing against each other; friction works against
motion
A graph in which the data are represented by points connected by one or more lines
A graph that represents distance traveled in increments of time
The horizontal line with labels on a coordinate grid
The vertical line with labels on a coordinate grid
The basic SI unit of length
The basic SI unit of time
The point or area occupied by a physical object
The path that an object is moving or facing
The measurement of the rate of change of position with respect to time; S=d/t
A change in an object’s position, direction, or location
Average distance covered by an object per unit of time
Energy that is stored in a system
Energy of motion
Energy cannot be created nor destroyed, it changes from one form to another
The change of energy from one form to another
Energy that is released during a chemical reaction or change
Energy in the form of electricity
Energy in the form of electromagnetic waves
Energy that an object such as a machine ha because of its movement or position
The energy or heat, which transfers from hotter objects to colder objects
Type of energy from the Sun; light
Energy that is released when the nuclei or atoms are split or combined
A principle in physics which states that energy cannot be created nor destroyed
The use of force to move an object through a distance, W=Fd
Measurement from one place to another
A push or pull, measured in Newton’s
An object at rest stays at rest or an object in motion stays in motion until
unbalanced forces act upon it
The tendency of a physical object to remain still or continue moving, unless force is
applied
Forces on an object that cause change in the motion of the object
Acceleration of an object depends on the object’s mass and magnitude of the force
acting upon it; F=ma
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8th Grade Third Six Weeks Vocabulary
TERM
DEFINITION
Force
A push or pull that acts on an object
Measures how an object changes velocity-moving faster, slower, or continues to
move at the same rate
The amount of matter an object contains, measured in grams
A number that tells how much of something there is; quality of being big
Newton’s law that states that for every action there is an equal and opposite
reaction
Movement caused by force
Resistance or opposition to a force, influence or movement
Acceleration
Mass
Magnitude
Newton’s Law of
Reaction-Action
Action
Reaction
8.6B
Motion
Speed
Velocity
Direction
Distance
Rate
Acceleration
8.9B
Divergent Boundary
Convergent Boundary
with Subduction
Subduction
A change in an object’s position, direction, or location
A measurement of the rate of change of position with respect to time
Measurement of speed and direction or an object
The path that an object is moving or facing
Measurement from one place to another
A quantity, amount, or degree of something measured per unit of something else
Change of an object’s speed or direction
The boundary between two tectonic plates moving away from each other; on land
creates rift valleys, on the sea floor creates new ocean crust and mid-ocean ridges
The boundary between two tectonic plates moving toward each other resulting in
volcanic activity when a denser ocean plate subducts below continental plate
A plate is forced below when one plate is denser than another as they converge;
occurs at continental to oceanic boundaries and oceanic to oceanic boundaries
Convergent Boundary
with Mountain Building
A major geological event; occurs when continental plates of equal density converge
Transform Boundary
The boundary between two plates that slide past one another, sudden shifts result
in earthquakes and the release of stored energy
6.6B
Density
Mass
Volume
Milliliter
Cubic centimeter (cm3)
Gram
Displacement
Water as a standard
Relative Density
The amount of matter in a given space or volume; a relationship between mass and
volume; D=mass/volume
Amount of matter a body contains; anything that has mass and volume
Amount of space a body contains
A metric unit of measurement used to measure small volumes of liquid
A metric unit of measurement used to measure small volumes of solids
A metric unit of measurement used to measure small amounts of mass
A way to measure the volume of a solid by placing it in a known amount of liquid
1g of water has a volume of 1ml or 1cm 3
The comparison of the density of one material as it relates to another; frequently the
comparison is to the density of water (as in sinking or floating)
8.9A
Plate Tectonic Theory
Lithosphere
Continental Drift
Fossil Evidence
Sea Floor Spreading
Evidence
Theory that the lithosphere is divided into tectonic plates that slowly move on top of
the asthenosphere
Cool, rigid, outermost layer of Earth that is divided into enormous pieces called
tectonic plates; consists of the curst and the rigid uppermost part of the mantle
Alfred Wegener’s theory that the continents were once all connected in one large
landmass named Pangaea
Impressions of organisms left in rock layers that indicate the organisms once lived
in the area
A parallel pattern of rock material found at identical locations on each side of the
Mid-Atlantic Ridge reveals rock of the same geologic age and polarity
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