Integrated Science Unit 4, Chapter 11

Unit Four: Sound and Waves Chapter 11 Introduction to Harmonic Motion 11.1 Harmonic Motion 11.2 Graphs of Harmonic Motion 11.3 Simple Mechanical Oscillators

Chapter 11 Learning Goals Learn about harmonic motion and how it is fundamental to understanding natural processes. Use harmonic motion to keep accurate time using a pendulum. Learn how to interpret and make graphs of harmonic motion. Construct simple oscillators. Learn how to adjust the frequency and period of simple oscillators. Learn to identify simple oscillators.

Chapter 11 Vocabulary Terms amplitude cycle frequency harmonic motion hertz oscillator phase period periodic motion system

11.1 Harmonic Motion Key Question: How do we describe the back and forth motion of a pendulum? *Read text section 11.1 AFTER Investigation 11.1

11.1 Harmonic vs. Linear Motion Harmonic motion repeats over and over again. Linear motion goes from one place to another without repeating

11.1 Harmonic Motion in: nature technology art and music

11.1 Cycles, systems, and oscillators A cycle is a unit of motion that repeats.

11.1 Cycles, systems, and oscillator A system is a group that includes all the things we are interested in studying. A system that shows harmonic motion is called an oscillator. ex. pendulum ex. heart and its muscles

11.1 Amplitude Amplitude describes the size of a cycle.

11.2 Linear Motion vs. Harmonic Motion Graphs

11.2 Graphs of Harmonic Motion Key Question: How do we make graphs of harmonic motion? *Read text section 11.2 BEFORE Investigation 11.2

11.3 Simple Mechanic Oscillators pendulums masses on springs vibrating strings on musical instruments

11.3 Simple Mechanical Oscillators Key Question: What kind of systems oscillate? *Read text section 11.3 BEFORE Investigation 11.3