Practice TestTake a test on your terms and definitions
Spaced RepetitionScientifically backed study method
Matching GameHow quick can you match all your cards?
FlashcardsStudy terms and definitions
1 / 20
There's no tags or description
Looks like no one added any tags here yet for you.
21 Terms
1
Measurement
The process of comparing a physical quantity with a standard unit.
New cards
2
Unit
A standard of measurement used to express a physical quantity.
New cards
3
Fundamental Units
Base units defined independently (e.g., length, mass, time).
New cards
4
Derived Units
Units that are combinations of fundamental units (e.g., speed, density).
New cards
5
SI Units
The International System of Units, the modern form of the metric system based on seven base units.
New cards
6
Significant Figures
Digits in a measurement that carry meaning contributing to its precision.
New cards
7
Dimensional Analysis
A method to check the consistency of units in equations or derive relationships between physical quantities.
New cards
8
Base Quantities
Fundamental physical quantities that cannot be expressed in terms of other quantities (e.g., meter, kilogram).
New cards
9
Volume
The amount of space occupied by an object, measured in cubic units.
New cards
10
Density
Mass per unit volume of a substance, commonly measured in grams per cubic centimeter (g/cm³).
New cards
11
Radian
The unit of angular measure, defined as the angle subtended at the center of a circle by an arc equal in length to the radius.
New cards
12
Steradian
The unit of solid angle in three-dimensional space, defined as the angle subtended at the center of a sphere by an area equal to the square of its radius.
New cards
13
Scientific Notation
A way of expressing numbers as a product of a coefficient and a power of 10.
New cards
14
Order of Magnitude
An approximation indicating the scale or size of a physical quantity, expressed as a power of ten.
New cards
15
Dimensional Formula
An expression representing a physical quantity in terms of its fundamental dimensions (e.g., [M^a L^b T^c]).
New cards
16
Dimensional Equation
An equation expressing a physical quantity in terms of its dimensional formula.
New cards
17
Error Propagation
The process of determining the uncertainty in the result of a calculation based on the uncertainties of the input values.
New cards
18
Precision
The level of detail in a measurement, indicated by the number of significant figures.
New cards
19
Accuracy
The closeness of a measured value to the actual (true) value.
New cards
20
Homogeneity of Dimensions
The principle stating that physical quantities can be added or subtracted only if they have the same dimensions.
New cards
21
Exponential Growth
A growth pattern in which the quantity increases by a fixed percentage over a specific period.
Studied by 0 people
