Mathematical representations are needed to identify some patterns. Use mathematical, computational, and/or algorithmic representations of phenomena or design solutions to describe and/or support claims and/or explanations. Using Mathematics and Computational Thinking(Science and Engineering Practice 5.3).Developing and Using Models (Science and Engineering Practice 2.3)ĭevelop, revise, and/or use a model based on evidence to illustrate and/or predict the relationships between systems or between components of a system. Success with Sound Intensity and the DeciBel Scale requires some degree of understanding or proficiency with respect to. Questions target a student's ability to recognize the qualitative and quantitative relationship between variables, to use the relationship to compare various sounds with different intensities or deciBel ratings or at different distances from the same source, and to extrapolate from a table or a graph to predict deciBel ratings or intensities for a given set of conditions. Information is presented in the form of two tables and a graph. TheSound Intensity and the DeciBel Scale describes the relationship between the intensity of a sound at a given distance from the source and the associated deciBel level. You can access this information from this page. However, it may be considerably easier to have a printed copy of this information or to display the information in a separate browser window. This information is accessible by tapping on the small thumbnails found on the bottom right of every question. Like all our Science Reasoning Center activities, the completion of the Sound Intensity and the DeciBel Scale activity requires that a student use provided information about a phenomenon, experiment, or data presentation to answer questions. The "decibel" is technically one tenth of the unit "bel," although the "bel" is rarely used. The bel is named in honor of Socttish-American scientist and inventor of the telephone, Alexander Graham Bell (1847-1927) 2.Reasoning Center » Sound Waves » deciBel Scale » About About Sound Intensity and the DeciBel Scale This is useful in medical ultrasound since the difference in intensity between a transmitted ultrasound beam and a returning echo can be six orders of magnitude different. 1000x rise in sound intensity corresponds to a 30 db increase.100x rise in sound intensity corresponds to a 20 db increase.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |