At the Bell: Pick up a worksheet at the front of class

Slides:

Advertisements

Similar presentations

Advertisements

Sound Students will learn about sound as a wave..

An Introduction to Waves

Announcements -Homework 21: due Today -Homework 22: due Thursday, Dec. 2 -Review session: Sunday, Dec. 5, 1-4 pm?

Ch. 17 – Mechanical Waves & Sound

The Nature of Sound

Physical Science Waves and Sound Lincoln High School Mr. Lowery Earth Science (slightly modified for Integrated Science: Ms. Gall 2011)

AIM: What is sound?.

Chapter 15.2 – Characteristics of Waves amplitude – the maximum distance that the particles of a wave’s medium vibrate from their rest position -in a transverse.

Characteristics of Sound. What Produces Sound?? If a tree falls in a forest and no one is there to hear it, will there be sound?

When something moves back and forth, up and down, or side to side we say it vibrates. A vibration is a wiggle. When this wiggle moves through space and.

The Nature of Waves Learning Goals: Recognize that waves transfer energy, but not matter. Define mechanical waves. Compare and contrast transverse and.

SOUND Longitudinal Wave Travels through some medium Cannot travel through a vacuum How does vibrating drum produce sound? Skin moving up presses air.

Waves Introduction Chapter 10 Section 1 and 2 Physics Standard 4.

Homework Solutions Section 8.2 / 8.3.

Parts of waves. 2 Parts Transverse Wave  1) Crest – high point of wave  2) Trough – low point of wave.

SOUND WAVES & BEAT FREQUENCY. SOUND WAVES Sound waves are caused by vibrations Vibrations cause contraction and expansion of an object, which creates.

Ch. 11 Waves 11.1 Nature of Waves 11.2 Wave Properties 11.3 Wave Interactions.

Waves What are waves?. ENERGY  Disturbance that transfers ENERGY through different mediums WAVES.

Sound Waves You Have to Hear This!!!!.

Energy  an object is said to have “energy” if the object has the ability to change its environment Two ways to transfer energy  1. through the application.

26.1 The Origin of Sound What is the source of all sound?

Light and Sound. Wave A disturbance in a medium that transfers energy from one location to another.

Sound Waves If a tree falls in the forest and no one is around to hear it, does it make a sound?? What is sound?? Disturbance that travels through a medium.

Sound Chapter 15. Sound Waves Sound is a longitudinal wave. (medium displaces parallel to direction of the wave) Sound is a longitudinal wave. (medium.

What is sound? Sound is a longitudinal wave which travels through the air through a series of compressions and rarefactions.

PROPERTIES OF WAVES FREQUENCY & WAVE SPEED. REVIEW A wave is a disturbance that transfers energy from place to place. In science, energy is defined as.

Physics Section 11.3 Apply the properties of waves A wave is a periodic disturbance that transfers energy by the vibration of matter, rather than the transfer.

Book Chapters 16 and 17 Unit 8 - Waves and Sound.

Waves Unit 1: Lessons 1-2. What are waves? A wave is a disturbance that transfers energy from one place to another A medium is the material through which.

The Wave Motion of Sound & Light Sound – parallel vibrations Light – perpendicular vibrations.

Sound Sound Waves  Longitudinal Waves (disturbance) that travel through a medium  Begins with a vibration  Carries ENERGY (like all waves)  Can travel.

Sound and Music.

A pressure variation that is transmitted through matter

Gently tap the tuning fork on the bench and then hold in the water.

Sound Part One.

Electromagnetic spectrum

Unit: Sound and Light Lesson 1 “The Nature of Sound”

Sound Holt Chapter 12.

Waves Review & Electromagnetic Waves Introduction

Light and Sound.

Sound Learning Objectives:

09/11/2018 Think of as many things that make sound as you can, and for each of these think about what is vibrating.

Sound As we know, sound waves are formed when something vibrates. But how does the sound reach our ears? Air molecules 2) The vibrations pass through.

What is a wave? SC.7.P.10.3 Recognize that light waves, sound waves, and other waves move at different speeds in different material Unit 5 lesson 1.

Sound and Hearing it.

Ch. 12 Waves pgs

Sound JC Physics.

Part 2: Mechanical Waves

Types of Wave Describing Waves The Wave Equation

Sound and HOW WE Hear it.

1.) What forms mechanical waves?

The Speed of Sound & Mach #

The Nature of Sound Physics Chapter 16A.

What are waves?.

How air temperature affects the speed of sound

Chapter 12 Notes.

What are waves?.

Presentation transcript:

At the Bell: Pick up a worksheet at the front of class Sound Introduction Lesson Goal: Be able to predict how far a storm is based on temperature and using v=d/t At the Bell: Pick up a worksheet at the front of class

Sound Sound: Vibrations (energy waves) that travel through a medium. Mechanical wave – requires a medium Longitudinal wave – energy parallel

Sound Compression: region of high molecular density and high air pressure Rarefaction: region of low molecular density and low air pressure

How We Hear Sound waves are gathered by our ears and those pressure waves of energy travel through your ear and are recognized as sound.

Too Much Noise: Krakatoa 1883 Sailors 20 miles away Heard 3000 miles away Further than NY to LA

LRAD

Speed of Sound In a vacuum (like space), light travels at a constant speed of 3 x 108 m/s That’s 300,000,000 m/s Do you think the speed of sound is the same as the speed of light? Why?

Sound vs. Light

Sound vs. Light

The Speed of Sound The speed of sound depends on the medium it travels through and the temperature. Air (room temperatures 68) – 343 m/s Water (room temp) – 1490 m/s Sea water (room temp) – 1530 m/s Aluminum – 5100 m/s Copper – 3560 m/s

Speed of Sound in Air v = speed T = temperature in Celsius

Speed of Sound in Air 1) What is the speed of a sound wave in the air at 55 degrees Celsius?

Speed of Sound in Air 2) What is the speed of a sound wave in the air at -10 degrees Celsius?

Finding the Distance to a Storm You can figure out how far away a storm is using PHYSICS! How do you think we can do this?

Finding the Distance from a Storm 3) You hear thunder 10 seconds after you see lightning. How far away is the storm? (use 343 m/s for the speed of sound in this example)

Finding the Distance from a Storm 3) You hear thunder 10 seconds after you see lightning. How far away is the storm? (use 343 m/s for the speed of sound in this example)

Finding the Distance from a Storm 4) You hear thunder 5 seconds after you see lightning. How far away is the storm? Assume the speed of sound is 343 m/s.

Finding the Distance from a Storm 5) You hear thunder 10 seconds after you see lightning. How far away is the storm? How far away is the storm if it is 25 degrees Celsius out? (that’s 77 Fahrenheit)

How Far Away Is The Storm On Your Own: 1) You hear thunder 8 seconds after lighting. The speed of sound outside is 343 m/s. You hear thunder 3 seconds after lightning. The speed of sound outside is 343 m/s. It is 10 degrees Celsius outside. You hear thunder 3 seconds after you see lightning. It is 0 degrees Celsius outside. You hear thunder 3 seconds after you see lightning.