Presentation is loading. Please wait.

Presentation is loading. Please wait.

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

Published byMiles Stanley Modified over 6 years ago

Similar presentations

Presentation on theme: "Gently tap the tuning fork on the bench and then hold in the water."— Presentation transcript:

1 Gently tap the tuning fork on the bench and then hold in the water.
What do you notice? Use your observations to explain how sounds are produced and how they travel.

2 Learning Objectives By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of sound

3 What causes sound? Sounds are made when an object vibrates.
Learning Objectives By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of sound What causes sound? Take a tuning fork and strike it against a block of wood. What do you observe? The tuning fork vibrates and you hear a sound. Sounds are made when an object vibrates.

4 Good Vibrations! Learning Objectives
By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of sound Good Vibrations! What vibrates so that each of these objects makes sound? violin strings drum skin voice box loudspeaker cone

5 Sound travels as longitudinal waves
Learning Objectives By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of sound Sound travels as longitudinal waves The vibrations of the particles are parallel to the direction the wave travels.

6 vacuum pump on The sound cannot be heard Learning Objectives
By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of sound vacuum pump on The sound cannot be heard

7 How sound travels… Learning Objectives
By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of 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 air by making air molecules vibrate 1) An object makes a sound by vibrating 3) These vibrations are picked up by the ear 19/07/2018

8 Rank the following from fastest to slowest:
Learning Objectives By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of sound Rank the following from fastest to slowest: Sound Light Meteorite Jet fighter Cheetah Plane

9 How can we measure the speed of sound?
Learning Objectives By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of sound How can we measure the speed of sound? Control Variable Question Dependent Variable Independent Variable

10 Speed of sound (in m/s) Learning Objectives By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of sound Material

11 Sound waves travel fastest through dense solids.
Learning Objectives By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of sound Sound needs a substance to travel through and travels by particles vibrating. solid liquid gas Sound waves travel fastest through dense solids.

12 Explain why people say:
Learning Objectives By the end of this lesson you should… Be able to explain how sounds are produced Be able to describe how sound can travel through a material Understand why no sound can be heard in a vacuum Be able to describe a practical to measure the speed of sound Explain why people say: ‘Keep your ear to the ground’

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

Similar presentations

Sounds are form of energy, created by something vibrating (moving very fast in invisible waves). The vibrations set up sound waves in the surrounding.

Sounds are form of energy, created by something vibrating (moving very fast in invisible waves). The vibrations set up sound waves in the surrounding.
EQ: How do I define, describe and identify sound?

EQ: How do I define, describe and identify sound?
Sound D. Crowley, 2008 Sound To know how sound travels, and how this is affected by the medium it travels through.

Sound D. Crowley, 2008 Sound To know how sound travels, and how this is affected by the medium it travels through.
SOUND Self-Learning Package Click to proceed. Learning Objectives (a) describe the production of sound by vibrating sources (b) describe the longitudinal.

SOUND Self-Learning Package Click to proceed. Learning Objectives (a) describe the production of sound by vibrating sources (b) describe the longitudinal.
Sound and Hearing. Speed of sound The speed of sound in air is around 330 m/s. What happens when sound travels through different materials? Material Speed.

Sound and Hearing. Speed of sound The speed of sound in air is around 330 m/s. What happens when sound travels through different materials? Material Speed.
Waves: Sound.

Waves: Sound.
If a tree falls in a forest and no one hears it, does the tree make a sound?

If a tree falls in a forest and no one hears it, does the tree make a sound?
Coach Dave Edinger Physical Science (8A) J. C. Booth Middle School.

Coach Dave Edinger Physical Science (8A) J. C. Booth Middle School.
A sound wave passes down the ear canal It hits the eardrum and makes it vibrate The vibration is passed on through some small bones into a liquid Nerve.

A sound wave passes down the ear canal It hits the eardrum and makes it vibrate The vibration is passed on through some small bones into a liquid Nerve.
April 7, 2005Created by Kristy Lynn Price SOUND TLW explore how sounds can be produced and changed. TLW identify vibrations as the source of sound. TLW.

April 7, 2005Created by Kristy Lynn Price SOUND TLW explore how sounds can be produced and changed. TLW identify vibrations as the source of sound. TLW.
Understand that sound waves are produced by vibrating objects, and that sound requires a medium to travel through. Understand the links between amplitude,

Understand that sound waves are produced by vibrating objects, and that sound requires a medium to travel through. Understand the links between amplitude,
Sound waves Lesson objectives state that: sound cannot travel through a vacuum but can travel through solids, liquids and gases describe how sounds travel.

Sound waves Lesson objectives state that: sound cannot travel through a vacuum but can travel through solids, liquids and gases describe how sounds travel.
Sound Waves You Have to Hear This!!!!.

Sound Waves You Have to Hear This!!!!.
Telecommunication. Sound Waves. Sound energy travels in the form of waves. Sound can travel through solids, liquids and gases by vibrating the particles.

Telecommunication. Sound Waves. Sound energy travels in the form of waves. Sound can travel through solids, liquids and gases by vibrating the particles.
The Nature of Sound EQ: How do I define, describe and identify sound?

The Nature of Sound EQ: How do I define, describe and identify sound?
{ Chapter 2: Sound Section 1: The Nature of Sound.

{ Chapter 2: Sound Section 1: The Nature of Sound.
Monday, September 30, 2013 Take out the following:  Pencil or Pen  Planner (p.38)  Energy Workbook  Rainbow Reading.

Monday, September 30, 2013 Take out the following:  Pencil or Pen  Planner (p.38)  Energy Workbook  Rainbow Reading.
26.1 The Origin of Sound What is the source of all sound?

26.1 The Origin of Sound What is the source of all sound?
Studio Magic Drummer 1 Street SS1 Use practical activities to help you work out answers to the questions. Then use words and diagrams to explain your answers.

Studio Magic Drummer 1 Street SS1 Use practical activities to help you work out answers to the questions. Then use words and diagrams to explain your answers.
RIGHT PAGE 58 October 25 Focus: Sound and Hearing Objective: Explain the relationship among the rate of vibration, the medium through which vibrations.

RIGHT PAGE 58 October 25 Focus: Sound and Hearing Objective: Explain the relationship among the rate of vibration, the medium through which vibrations.

Similar presentations

Ads by Google