Base Units
The base SI unit used to track time.
Seconds.
A measurement unit that is one-dimensional and completely independent of other values.
Fundamental units.
The amount of three-dimensional space an object occupies, measured in cubic meters.
Volume.
Measured in Joules, this occurs when energy is transferred to an object and causes displacement.
Work.
The physical property of a substance calculated as its mass per unit volume.
Density.
The fundamental SI unit used to measure distance or length.
Meters.
Measurement units formed by combining two or more base values together.
Derived units.
The mathematical process of converting units by multiplying ratios so unwanted units cancel out.
Dimensional analysis.
Measured in Watts, this variable describes the rate at which work is completed.
Power.
The upward force exerted by a fluid that opposes the weight of an object in the liquid.
Buoyant force.
The base SI unit used to measure mass.
Kilogram.
A variable measured in meters per second that describes speed in a specific direction.
Velocity.
Fractional multipliers used in unit conversion that equal one and allow unwanted units to cancel.
Conversion factors.
A measure of experimental quality describing how close a measurement comes to the true, accepted value.
Accuracy.
The downward force acting on an object that pulls it to the center of the planet.
Gravity.
The base SI unit used to measure thermodynamic temperature.
Kelvin.
The rate of change in velocity over time, measured in meters per second squared.
Acceleration.
The derived unit used to express force and weight by measuring the acceleration of a known mass.
Newton.
A measure of experimental quality describing how close repeated measurements are to one another.
Precision.
What an object will do in a liquid if its density is greater than the density of the fluid.
Sink.
The globally agreed-upon base measurement used across the world for a physical quantity.
Standard Unit.
A two-dimensional measurement calculated by multiplying length by width, expressed in square meters.
Area.
What is the standard unit for the physical quantity that describes the amount of force applied over a specific area.
Pressure.
The mathematical calculation scientists use to evaluate overall accuracy against an accepted standard.
Percent error.
The force opposing gravity in a liquid that helps object to float.
Buoyant force.