Texas TEKS 6.8.C

Science6th GradeForce, motion, and energy

The Standard

explain how energy is transferred through transverse and longitudinal waves.

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students describe how waves carry energy from one place to another without carrying matter along with them. They compare particle motion in transverse waves and longitudinal waves.
What Mastery Looks Like: Students can use a diagram or model to show the direction of energy transfer and particle motion. They explain that particles move perpendicular to energy in transverse waves and parallel to energy in longitudinal waves.
Common Misconceptions: Students may think particles travel with a wave from its source to its destination. They may also confuse particle motion with energy direction or assume sound is transverse because it is often drawn as a curved line.
How to Assess It: On an exit ticket, have students sketch a rope wave and a compression wave in a spring toy. Ask them to label particle motion and energy direction on each sketch.

Lesson moves

Use a rope and a spring toy to model both wave types, then mark particle motion and energy direction with arrow cards.
Write: How can a stadium wave move around the stands when each person stays near one seat?
Play a card sort matching wave diagrams, particle motion, energy direction, and examples such as sound, light, and rope waves.
Compare how sound reaches a listener through air with how a radio signal carries energy from a tower to a phone.

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