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Assessment

A Loud Noise

Curated and Reviewed by Lesson Planet
This A Loud Noise assessment also includes:

In a scale measuring noise, an increase in 10 dB is a 10 time increase in power. Mathematicians examine the data graph of a real world exponential growth, with no logarithmic scale, and then create two equations relating the decibels and power in terms of each other.

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CCSS: Adaptable
Concepts
exponential functions, exponential growth, exponential models, exponential equations, exponential expressions, logarithmic functions, logarithms, logarithmic equations, logarithmic scale
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Additional Tags
math
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Instructional Ideas
  • Conduct a short lesson on logarithmic scales
  • Review how to solve complex exponential equations
Classroom Considerations
  • Assumes pupils are familiar with the relationship between exponential and logarithmic functions
Pros
  • The answer key shows why it is not possible to graph the entire function on the same graph 
  • Rubric provides descriptions of partial and full credit
Cons
  • None