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31 Ιαν 2016 · This document outlines a grade 4 science unit on sound that includes various lesson activities to engage students in learning about sound through discussion, experiments, presentations, and a final research project. Assessment will occur throughout the unit via student presentations and science journals. Lessons cover topics like the human ear ...
4 Σεπ 2014 · Unit Note: The Next Generation Science Standards (NGSS) expect students to understand properties of sound energy such as wavelength, pitch, amplitude, and frequency in grade 4. Some districts currently have a sound unit located in other grade levels. This unit was written with grade 4 NGSS standards in mind, but also pulls from grades 5 and 6 NGSS,
Introduction to waves and Sound Unit. Lesson #1: What Are Waves? Lesson #2: Types of Waves; Lesson #3: Properties of Transverse Waves; Lesson #4: Pitch Perfect: What is Sound? Lesson #5: Sound and Communication; Lesson #6: Ears; Additional Activities; Light Unit. Lesson #1: Introduction to Light; Lesson #2: Transparent, Translucent, and Opaque
Develop a model of waves to describe patterns in terms of amplitude and wavelength and that waves can cause objects to move. [Clarification Statement: Examples of models could include diagrams, analogies, and physical models using wire to illustrate wavelength and amplitude of waves.]
The reflection, refraction and diffraction of sound waves and a sound wave model. (a) Reflection of sound waves. When sound waves meet a barrier between two different media they can be reflected just like any other wave (diagram of wavefronts on the right).
When a sound wave meets a boundary it may be: reflected. refracted. absorbed. Whether a sound wave is reflected, refracted, or absorbed depends on the densities of the materials either side...
A wave’s frequency can be measured by how many crests (or how many troughs) pass a location in a certain amount of time. A wave with a larger frequency has more energy. If a wave’s frequency doubles, its energy also doubles. A wave’s energy is proportional to the square of its amplitude.
