# Shared Flashcard Set

## Details

The Science of Physics
What is Physics?
22
Physics
09/14/2010

Term
 models
Definition
 a pattern, plan, representation, or description designed to show the structure or workings or an object, system, or concept.
Term
 System
Definition
 a set of particles or interacting components considered to be a distinct physical entity for the purpose of study.
Term
 hypothesis
Definition
 an exploration that is based on prior scientific research or observation that can be tested.
Term
 controlled experiment
Definition
 an experiment that tests only one factor at a time by using a comparison of a control group with an experimental group.
Term
 accuracy
Definition
 a description of how close a measurement of to the correct or accepted value of the quantity measured
Term
 precision
Definition
 the degree of exactness of a measurement
Term
 Method error
Definition
 when some measurements taken using one method and some are taken using a different method.
Term
 significant figures
Definition
 those digits in a measurement that are known with certainty plus the first digit that is uncertain.
Term
 Physics involves
Definition
 temperature, size, motion, position, shape or color
Term
 Mechanics
Definition
 motion and its causes, interactions between objects Ex: Hits during a football game.
Term
 Thermodynamics
Definition
 heat and temperature
Term
 vibrations and wave phenomena
Definition
 specific types of relative motion.
Term
 optics
Definition
 light Ex: sunglasses
Term
 Electromagnetism
Definition
 electricity, magnetism and light Ex: Circuitry
Term
 Relativaity
Definition
 particles moving at any speed, including very high speeds Ex: nuclear energy
Term
 Quantum Mechanics
Definition
 behaviors of submicroscopic particles Ex: the atom and its particles
Term
 Main areas with in physics
Definition
 Mechanics, thermodynamics, vibration and wave phenomena, optic, Electromagnetism, relativity, quantum mechanics
Term
 Dimension
Definition
 the measure of what kind of physical quantity like length, mass, time, temperature, electrical current
Term
 units
Definition
 how much of the physical quantity
Term
 Valid equations
Definition
 only if they can be used to make correct predictions in situations
Term
 Dimensional analysis
Definition
 can be treated like algebraic quantities, both sides of the equation must have the same dimensions
Term
 order- of- magnitude calculation
Definition
 estimation problem that helps show whether the correct answer is big or small; uses the power of 10; used with little information.
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