Chapter 1 Flashcards
Degree which measured value agrees with correct value for that measurement
Accuracy
Estimated value based on prior experience and reasoning
Approximation
Physics that was developed from the Renaissance to the end of 19th century
Classical Physics
Ratio expressing how many of one unit are equal to another unit
Conversion factor
Units that can be calculated using algebraic combinations of the fundamental units
Derived units
System of measurement used in the United States; includes units of measurement such as feet, gallons, and pounds
English units
Units that can only be expressed relative to the procedure used to measure them
Fundamental units
SI unit for mass, abbreviation (kg)
Kilogram
A description using concise language or a mathematical formula, generalized pattern in nature that is supported by scientific evidence and repeated experiment
Law
SI unit for length, abbreviation (m)
Meter
Percent uncertainty in a quantity calculated by multiplication or division is the sum of the percent uncertainties in the items used to make the calculation
Method of adding percents
System which values can be calculated in factors of 10
Metric system
Representation of something that is often too difficult to display directly
Model
Study of relativity, quantum mechanics or both
Modern physics
Refers to the size of a quantity as it relates to a power of 10
Order of magnitude
Ratio of the uncertainty of a measurement to the measured value, expressed as a percentage
Percent uncertainty
Characteristic or property of an object that can be measured or calculated from other measurements
Physical quantity
Science concerned with describing the interactions of energy, matter, space, time; it is especially interested in what fundamental mechanisms underlie every phenomenon
Physics
Degree to which repeated measurements agree with each other
Precision
Study of objects smaller than can be seen with a microscope
Quantum mechanics
Study of objects moving at speeds greater than about 1% of the speed of light, or of objects being affected by a strong gravitational field
Relativity
SI unit for time, abbreviation (s)
Second
Express the precision of a measuring tool used to measure a value
Significant figures
Standard used for expressing and comparing measurements
Units
International system of units that scientists in most countries have agreed to use; includes units such as meters, liters, and grams
SI units
Quantitative measure of how much your measured values deviate from a standard or expected value
Uncertainty
Explanation for patterns in nature that is supported by scientific evidence and verified multiple times by various groups of researchers
Theory
Method that typically begins with an observation and questions that the scientist will research
Scientific method
