Use mathematical representations to describe a simple model for waves that includes how the amplitude of a wave is related to the energy in a wave. MS-PS4-1

Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials. MS-PS4-2

Integrate qualitative scientific and technical information to support the claim that digitized signals are a more reliable way to encode and transmit information than analog signals. MS-PS4-3

**Developing and Using Models**

Modeling in 6–8 builds on K–5 experiences and progresses to developing, using, and revising models to describe, test, and predict more abstract phenomena and design systems.

Develop a model to describe phenomena. (MS-PS4-2)

**Using Mathematics and Computational Thinking**

Mathematical and computational thinking at the 6–8 level builds on K–5 experiences and progresses to identifying patterns in large data sets and using mathematical concepts to support explanations and arguments.

**Obtaining, Evaluating, and Communicating Information**

Obtaining, evaluating, and communicating information in 6–8 builds on K–5 experiences and progresses to evaluating the merit and validity of ideas and methods.

**Science Knowledge Is Based on Empirical Evidence**

**
PS4.A:
Wave Properties
**

A sound wave needs a medium through which it is transmitted. (MS-PS4-2)

**
PS4.B:
Electromagnetic Radiation
**

**
PS4.C:
Information Technologies and Instrumentation
**

**Patterns**

Graphs and charts can be used to identify patterns in data. (MS-PS4-1)

**Structure and Function**

Structures can be designed to serve particular functions. (MS-PS4-3)

**Influence of Science, Engineering, and Technology on Society and the Natural World**

**Science Is a Human Endeavor**

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