J. Pulickeel SPH3U1 January 2010. What is a Wave? A wave is a disturbance that transfers energy through matter or space. a wave is the motion of a disturbance.

Slides:



Advertisements
Similar presentations
Waves.
Advertisements

Mechanical Waves.
Waves Openers Mrs. V Science A. Crest, B. Wavelength, C. Trough, D. Amplitude
WAVES Definition: A traveling disturbance that carries energy through matter and space Waves transfer energy without transferring matter. Waves are produced.
Wave Notes.
Waves, Sound and Light. WHAT ARE WAVES? A wave is a disturbance that transfers energy (not matter) from place to place. People jump up and down, moving.
Properties of Waves INSANE wave pool in Tokyo. Where's the water? - YouTube INSANE wave pool in Tokyo. Where's the water? - YouTube A wave is a disturbance.
Wave Theory Essential Question: What is a wave?. Answer Me!!!  Give an example of a wave. Then describe what that wave carries.
Wave Basics Unit 9 – Lecture 1.
Energy in Waves. A Wave is… Any disturbance that transmits energy through matter or space. Energy in Waves.
Waves Wave Properties Waves are propagated by a vibrating source Pulse – single disturbance created by a single oscillation Periodic Wave – periodic.
1 Waves and Vibrations. 2 Waves are everywhere in nature Sound waves, visible light waves, radio waves, microwaves, water waves, sine waves, telephone.
1 Waves and Vibrations. 2 Waves are everywhere in nature Sound waves, visible light waves, radio waves, microwaves, water waves, sine waves, telephone.
1 Waves and Vibrations. 2 Waves are everywhere in nature Sound waves, visible light waves, radio waves, microwaves, water waves, sine waves, telephone.
1 Waves and Vibrations Spectra of Science Amole. 2 Waves are everywhere in nature Sound waves, visible light waves, radio waves, microwaves, water waves,
What is a Wave? Sound and Light are forms of energy that travel in waves A wave is a repeating disturbance or movement that transfers energy through matter.
The Nature of Waves Learning Goals: Recognize that waves transfer energy, but not matter. Define mechanical waves. Compare and contrast transverse and.
WAVE Basics Chapters 15.
UNIT 3. What is a Wave? Definition: A disturbance that transfers energy from place to place. What carries waves? A medium, a medium is the material through.
* Waves and Vibrations. * Waves are everywhere in nature Sound waves, visible light waves, radio waves, microwaves, water waves, sine waves, telephone.
Waves Introduction Chapter 10 Section 1 and 2 Physics Standard 4.
WAVES Wave - a periodic disturbance that propagates energy through a medium or space, without a corresponding transfer of matter. e.g.1 sound wave (regular.
The Nature of Waves What is a wave? A wave is a repeating disturbance or movement that transfers energy through matter or space Waves transfer energy.
WAVES. What is a wave? A wave is a disturbance in a medium or space that transfers energy. The particles in a wave may oscillate or vibrate, but they.
Essential Question: How does data collected provide evidence that the amount of energy a wave carries determines the properties of a wave?
GENERAL PROPERTIES OF WAVES
1 Waves and Vibrations. 2 Waves are everywhere in nature Sound waves, visible light waves, radio waves, microwaves, water waves, sine waves, telephone.
Waves. What is a wave? a wave is a disturbance that travels through a medium from one location to another. a wave is the motion of a disturbance.
What are waves? a disturbance that transfers energy from place to place. Classified as either 1. Mechanical- require a medium 2. Electromagnetic- do not.
What is a wave? Wave – a disturbance or oscillation that travels from one place to another.
WHAT ARE WAVES? Wave is a disturbance that transfers energy. Medium(plural media) is a substance through which a wave can travel. The particles of a medium.
Energy Transfer - Waves. Waves A wave is any disturbance that transmits energy through matter or empty space. Energy can be carried away from it’s source.
WAVES Regular, Rhythmic disturbance in a field or medium where a transfer of energy occurs.
The Nature of Waves What is a wave? A wave is a repeating disturbance or movement that transfers energy through matter or space.
Wave Notes. What types of waves can you think of?
What is a Wave Waves – a disturbance that carries energy from one place to another Energy causes matter to vibrate creating most waves. The waves carry.
What are Waves? A wave is a disturbance that transfers energy from place to place. Energy – the ability to do work The material through which a wave travels.
Waves. Wave  repeating disturbance or vibration that transfers or moves energy from place to place.
Ch. 15 – Types of Waves I. Types of Waves Mechanical waves
Wave Basics. Wave Definition  Any traveling disturbance that transfers energy. WAVES DON’T MOVE MATTER!!!
Unit 12: Waves Waves.
Waves: Oscillations (back-and-forth or up-and-down motion) that travels from one place to another with a certain velocity (speed and direction.)
Introduction to Waves Resources: The Physics Classroom, Daniel A. Russell.
Unit 12: Waves Waves.
Chapter 8.1 Notes Waves.
Waves.
Waves Waves are “a disturbance that transfers energy”.
Wave Motion and Sound.
Waves Objective: I can describe the difference between mechanical waves and electromagnetic waves.
Unit 11: Waves Waves.
Wave Parts WAVES.
ZAP! Waves.
Essential Question: What are the types and properties of waves?
Waves.
Wave a disturbance that transfers energy from place to place.
Waves A wave can be described as a disturbance that transfers energy
Waves and Vibrations.
What are waves? A wave is a temporary disturbance that transfers energy from place to place.
MT 6 LT 1 Mechanical Waves What are waves?.
Ch Waves & Sound I. Characteristics of Waves Waves
Unit 11: Waves Waves.
Waves Review Science 7.
Ch Waves & Sound I. Characteristics of Waves Waves
Waves Dude!.
Waves and Vibrations Physics: Mr. Maloney.
Waves I. Characteristics of Waves Waves Transverse waves
Properties of waves.
Wave Properties.
Waves and Vibrations * *.
Presentation transcript:

J. Pulickeel SPH3U1 January 2010

What is a Wave? A wave is a disturbance that transfers energy through matter or space. a wave is the motion of a disturbance

What is a Wave? Does a wave need matter to be a wave? No it does not. Electromagnetic waves (Light, heat, x rays, radio waves ) can travel through the vacuum of space. Recall... Wavelength λ (m) Approximate Wavelength Scale Frequency (Hz) Visible Light Spectrum 400 nm 700 nm

What is a Wave? Other waves travel through a medium like rope, water, sand, air, people (at a baseball game), etc... These are called Mechanical Waves. We will be talking about mechanical waves in this unit.

What makes a wave A wave that consists of a single pulse is called a pulse wave. This can be done with a single flick of your wrist. Click here for Phet Animation

What makes a wave Whenever the source of a wave’s motion is a periodic motion, such as the motion of your hand moving up and down repeatedly, a periodic wave is produced. Notice that the individual particle of the wave does not change location. Its displacement is 0.

7 Transverse waves A second type of wave is a transverse wave. In a transverse wave the pulse travels perpendicular to the disturbance or the rest axis.

8 Transverse Waves Transverse waves occur when we wiggle the slinky back and forth or when the source disturbance follows a periodic motion. The wave formed here is a SINE wave. Transverse vs. Longtitudal Wave Animation

Parts of a Transverse Wave

10 Longitudinal Wave The wave we see here is a longitudinal wave. The medium particles vibrate parallel to the motion of the pulse. This is the same type of wave that we use to transfer sound.

11 Longitudinal Wave rarefaction compression

12 Transverse vs. Longitudinal Waves

13 Transverse vs. Longitudinal Waves

Water Waves Water waves are a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases.

15 Anatomy of a Wave Consider the below wave. Label the wavelength, crest, trough and amplitude. How many cycles are illustrated? What points (E,G,J) are in phase with B ? Which points (E,G,J) are out of phase with B?

Wave Races The waves have different but similar Which wave would with the wave race (have one oscillation pass the blue line first)?

17 Wave Period (T) seconds/cycle It is the time it takes for one cycle to complete seconds/cycle  moon around earth seconds/cycle  earth around the sun It also is the reciprocal of the frequency.

18 Wave Frequency (f) # of cycles/second The frequency measure how often something happens over a certain amount of time. We can measure how many times a pulse passes a fixed point over a given amount of time, and this will give us the frequency. The frequency is exactly the same as the source. It never changes, even if its speed and wavelength do! A slinky back and forth, and 6 waves pass a point in 2 seconds. What would the frequency be? 3 cycles / second 3 Hz

19 Wave Speed m/s T = s/cyclef = # of cycles/s λ= m v =f λ