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49 Cards in this Set
- Front
- Back
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Accuracy
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freedom from miskate or error
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Precision
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the degree of refinement with which an operation is performed
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Meter (m)
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the SI unit of length
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Significant Digits
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the number of digits in a measurement or calculation which reflect the accuracy of the measurement
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Kilogram (kg)
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the SI unit of mass
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Cubic Meter (m^3)
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the SI unit of volume
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Liter (L)
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the SI unit of liquid volume
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Density
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mass divided by volume (grams/cm^3)
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Specific Gravity
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Density of an object divided by the density of water. In the metric system the value of specific gravity is the same as density without units.
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Vernier Caliper
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an instrument for measuring dimensions with high precision
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Speed
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the distance an object travels per unit time
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Velocity
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the speed of an object in a specific direction
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Average Velocity
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the distance the object moved divided by the time interval
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Instantaneous Velocity
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the speed at which an object is moving at any given instance
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Acceleration
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the change in velocity divided by the interval of time in which the change occurs.
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Acceleration Due to Gravity (g)
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constant acceleration of all freely falling bodies that are close to the earth
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Period
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the time to complete one vibration
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Mass
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the amount of matter in an object. Mass does not vary with location.
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Weight
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the gravitational force on an object. Weight varies with location
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Newton
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the SI unit of force
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Slope of a line
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tell how much it is inclined to the horizontal axis. The slope of the line of a graph is found by taking any two points on the line and dividing the rise by the run.
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Elastic Body
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a body that changes in size or shape upon the application of a distorting force but returns to its original condition upon the removal of that force
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Elastic Limit
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the greatest distortion a body can undergo and still return to its original shape
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Hooke's Law
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Within the elastic limit of a substance, the restoring force is proportional to the amount of displacement.
F=kd |
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Spring Constant
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the constant of proportionality in Hooke's Law equation
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Restoring Force
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a force produced in a body which is equal and opposite to the applied force
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Simple Harmonic Motion
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A motion in which the acceleration and the resoring force are at all times proportional to the displacement of a vibration body form the position of equilibrium and are directed towared the point.
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Amplitude
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the maximum distance that the vibrating body moves from its position of equilibruim (rest)
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Displacement
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the distance of the body from its position of equilibruim (rest) at any instant
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Period
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the time to complete one vibration
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Heat
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the energy that flows as a result of a temperature difference
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Specific Heat of a Substance (c)
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the amount of heat required to raise the temperature of one gram of any substance by one degree Celsius.
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Calorie
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the amount of heat required to raise the temperature of one gram of water by one degree Celsius
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Latent Heat of Fusion of Water
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the amount of heat required to melt one gram of ice at 0 degrees Celsius into one gram of water at 0 degree Celsius
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Latent Heat of Vaporization of water
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the amount of heat required to change one gram of water at 100 degree Celsius to one gram of steam at 100 degree Celsius
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Law of conservation of heat energy
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when heat is transferred from one substance to another, the heat lost from the one substance equals the heat gained by the other
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Calorimeter
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the inner aluminum can in the calorimeter apparatus in which heat exchange takes place
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Phase Change
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change of state from solid to liquid or from liquid to vapor
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Electric Change (Q)
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the amount of electricity an object contains
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Coulomb (C)
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the SI unit of Charge
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Electric Current (I)
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the rate at which electric change flows through a wire
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Ampere
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the SI unit of current
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Potential Difference or Voltage
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the electrical work required to move a unit positive charge from point A to point B
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Volt (v)
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the SI unit of potential difference/voltage
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Resistance (R) of a conductor
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the opposition the conduction gives to the flow of current through it
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Ohm
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the SI unit of resistance
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Power (p)
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the rate at which work is done
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Watt
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the SI unit of power
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Joule
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the SI unit of energy
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