Longitudinal Waves - Bedford Public Schools

Longitudinal Waves - Bedford Public Schools

1 of 6 Boardworks Ltd 2009 What are longitudinal waves? PAT ARTWORK PC14_2 Sound travels as waves made up of vibrating air particles. Sound waves are an example of longitudinal waves. In a longitudinal wave, the particles vibrate back and forth,

so the direction of their movement is parallel to the direction of the wave. Think about the hairs on this fluffy cat vibrating backwards and forwards, as sound waves from the speaker pass by! 2 of 6 Boardworks Ltd 2009

What do longitudinal waves look like? A Slinky can be used to model longitudinal waves, by moving one end of the Slinky left and right. source moves left and right coils vibrate left and right direction of wave The wave travels away from the source. The direction of the wave is parallel to the movement of the source.

In a longitudinal wave, the coils do not travel horizontally; each coil of the Slinky just vibrates left and right. 3 of 6 Boardworks Ltd 2009 What are the parts of a longitudinal wave? Certain parts of a longitudinal wave have special names. Sections that are pushed together are called compressions, and sections that are stretched out are called rarefactions. compression

rarefaction Sound waves are longitudinal waves. When someone speaks, the air particles vibrate as a longitudinal wave, and so compressions and rarefactions are formed in the air. P waves, the primary waves produced by earthquakes, are also longitudinal waves, which push and pull the Earth. 4 of 6 Boardworks Ltd 2009 Simulation of a longitudinal wave

5 of 6 Boardworks Ltd 2009 Wavelength of a longitudinal wave The wavelength of any wave is the distance between two matching points on neighboring waves. wavelength wavelength The wavelength is the same whichever two matching points are used to measure this distance.

The symbol used to represent wavelength is . 6 of 6 Boardworks Ltd 2009 What is the Doppler effect? 7 of 6 Boardworks Ltd 2009

Recently Viewed Presentations

  • Structures génétiques et analyse d'association

    Structures génétiques et analyse d'association

    Introduction. Quelques éléments sur la prise en compte des structures. tirés de la thèse de Simon Teyssedre « Dissection génétique des caractères par analyse de liaison et d'association : aspects méthodologiques et application à la sensibilité à l'ostéochondrose chez les...
  • Expository writing

    Expository writing

    informative text structures (e.g., problem/solution, cause/effect, sequential) explanatory text structures (e.g., description or definition with causes, motives, or reasons) relevant content that supports or explains a topic. how to write a compare/contrast essay
  • Algorithms Representativeness Heuristic Compensatory Models Heuristics Decision Decision

    Algorithms Representativeness Heuristic Compensatory Models Heuristics Decision Decision

    Essential Task 7-1: Define cognition and identify how the following interact to form our cognitive life: schemata/concepts, prototypes, assimilation, accommodation, effortful processing, and unconscious processing. Schema. Prototype. Assimilation. Accommodation. Effortful Processing. Unconscious Processing ...
  • Chapter 23

    Chapter 23

    Introduction. Why was the economy so prosperous in the 1920's? What were the dominant political values of the 1920's? What was the new popular culture of the decade and which Americans did it barely touch?
  • Increases in Lifespan due to Oxaloacetic Acid Supplementation

    Increases in Lifespan due to Oxaloacetic Acid Supplementation

    Modification of the NAD+/NADH ratio to mimic Calorie Restriction ... -30% Decrease in Genes that Create & Store Fat 29% Reduction in Fat Tissue Mass with OAA Supplementation Reduced Weight Rebound Due to Lower Gene Expression After Diet Commercial Product...
  • Graduate Orientation Dr. Bohdan Luhovyy Graduate Program Coordinator

    Graduate Orientation Dr. Bohdan Luhovyy Graduate Program Coordinator

    Graduate courses offered by other departments in MSVU. Graduate courses from other University (permission required) Cross-listed Undergraduate Courses: GAHN 6330 Food and Nutrition for Successful Aging GAHN 6325 Advanced Human Nutrition and Metabolism GAHN 6408 Medical Nutrition Therapy I GAHN...
  • GASFUSE - gazbusters.co.za

    GASFUSE - gazbusters.co.za

    Gasfuse shuts off without you even being there (As soon as Gasfuse detects abnormal gas flow, it shuts off immediately) How GASFUSE™ works for Major Leaks If there is a major hose rupture, for example from a fire at the...
  • SAS macro %_Count_ - HCC

    SAS macro %_Count_ - HCC

    It is a hierarchical classification of terms at various levels, a coding system. * MedDRA data as SAS formats What are MedDRA tables? MedDRA tables consist of data files in which medical terminology is coded with 8-digit numbers at various...