Wave Properties and Information

Pace: 10 class periods
Checkpoint: 26 May

A simple wave has a repeating pattern with a specific wavelength, frequency, and amplitude. (MS-PS4-1)
A sound wave needs a medium through which it is transmitted. (MS-PS4-2)

When light shines on an object, it is reflected, absorbed, or transmitted through the object, depending on the object’s material and the frequency (color) of the light. (MS-PS4-2)
The path that light travels can be traced as straight lines, except at surfaces between different transparent materials (e.g., air and water, air and glass) where the light path bends. (MS-PS4-2)
A wave model of light is useful for explaining brightness, color, and the frequency-dependent bending of light at a surface between media. (MS-PS4-2)
However, because light can travel through space, it cannot be a matter wave, like sound or water waves. (MS-PS4-2)

PS4.C: Information Technologies and Instrumentation

Digitized signals (sent as wave pulses) are a more reliable way to encode and transmit information. (MS-PS4-3)

LS1.D: Information Processing
-Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Performance Expectations:
MS-PS4-1.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-PS4-2.Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials.
MS-PS4-3.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.

Purpose of Unit and IB Connections

Key Concept:
Relationship

Related Concept:
Energy
Patterns
Models

Global Context:
Scientific and technical innovation

Conceptual Understanding:
Wave energy is found in a variety of relationships used in creative expression.

Statement of Inquiry:
Information moves based on a pattern of energy changes.

Pretest and Differentiation

If you score a 90% or above on this pretest on your first attempt you will not need to complete any of the practice for this unit and an accelerated assignment will be provided. The pretest is not open internet or buddy or book. This pretest will be timed and may only be completed in class.

Practice Pretest

Part 1: Parts of a Wave

A simple wave has a repeating pattern with a specific wavelength, frequency, and amplitude. (MS-PS4-1)

Outline

Wave properties need to be visible to students to promote understanding. Use tuning forks, rope springs, and slinkies to model waves and their properties!
Materials Required:
Slinkies (1 per group)
Rope Springs (1 per group)
Beaker or shallow dish (1 per group)
Tuning Fork (2 of different sizes per group)

Parts of a Wave Essential Question and Skills

Review the esential questions and I can statements for this unit.

waves_essential_question.docx
File Size:	14 kb
File Type:	docx