Science.6.8.C

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The student is expected to explain how energy is transferred through transverse and longitudinal wave.
1666 TEKS header image

Knowledge and Skills Statement

Force, motion, and energy. The student knows that the total energy in systems is conserved through energy transfers and transformations.

The further explanation is designed to be a resource for educators that helps them better understand the topic their students are learning. Further explanations may be written at a more complex level than would be expected for students at the grade level.

Energy manifests in multiple phenomena, such as motion, light, sound, electrical and magnetic fields, and thermal energy. Energy can be modeled as either motions of particles or as stored in force fields (electric, magnetic, gravitational) that mediate interactions between particles. The total amount of energy in a system does not change, but it can be transferred between objects within the system.

Images like these can be useful when working with students to help them understand transverse and longitudinal waves.

There are two representations of types of waves. The top image shows a series of blocks that appear to be moving up and down creating a sine wave curve, or transverse wave. The bottom image shows a series of blocks that appear to be moving left and right, showing a compressional wave where alternating sections are bunched up or spread out.

Davezelenka, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons

 

Glossary terms and definitions are consistent across kindergarten through high school in the TEKS Guide. The definitions are intended to give educators a common understanding of the terms regardless of what grade level they teach. Glossary definitions are not intended for use with students.

a type of wave in which the particles oscillate in the direction in which the wave propagates

a type of wave in which the particles oscillate perpendicular to the direction in which the energy propagates

Research

Farenga, Stephen J., Beverly A. Joyce, and Daniel Ness. “Science of the Symphony: Part I.” Science Scope 25, no. 4 (January 2002): 60–64. http://www.jstor.org/stable/43179860.

Summary: "Symphony of Sound" explains the concept of energy transfer through sound and liquid transverse and longitudinal waves. This article supports learning at this grade level and teacher conceptual development beyond this grade level.