Essential Element: EE.MS-PS4-2

Target Level: Use a model to show how light waves (e.g., light through a water glass, light on colored objects) or sound waves are reflected, absorbed, or transmitted through various materials (e.g., water, air, table).

Precursor Level: Investigate changes in vibrations and sources of sound in everyday life.

Initial Level: Use a model to recognize that sound waves are transmitted by vibrations.