Presentation is loading. Please wait.

Presentation is loading. Please wait.

WAVES AND WAVE PROPERTIES. Simulation Wave Information Waves are a travelling form of energy Waves can also carry information Sound Light Music electricity.

Similar presentations


Presentation on theme: "WAVES AND WAVE PROPERTIES. Simulation Wave Information Waves are a travelling form of energy Waves can also carry information Sound Light Music electricity."— Presentation transcript:

1 WAVES AND WAVE PROPERTIES

2 Simulation

3 Wave Information Waves are a travelling form of energy Waves can also carry information Sound Light Music electricity

4 Wave Types Transverse Oscillates perpendicular to the direction of the motion. Examples are water waves and seismic S-waves Longitudinal Oscillate in the same direction/parallel to the direction of movement They move by expanding and contracting Examples are seismic P-waves and sound

5 Parts of a Wave: Waves have the following parts: Crest Trough

6 What are the 2 different types of waves? How are these 2 types of waves different?

7

8

9 Wave Properties Waves have 3 specific, identifying properties: Frequency Wavelength λ Amplitude

10 Frequency How many times the wave oscillates up and down Measured in Hz (hertz) 1 Hz is equal to 1 cycle per second Water frequency is around.1-10 Hz Sound has a frequency range of 20-20,000 Hz

11 Wavelength Series of repeating highs and lows Measured from crest to crest, or trough to trough

12 Amplitude: This is the amount/distance that the wave moves away from equilibrium

13 If the frequency of a wave increases, what do you think will happen to the wavelength? What type of a relationship is this? Positive Negative

14 Relationships: Frequency and Wavelength have an inverse or negative relationship As the frequency of a wave increases, its wavelength decreases OR As the frequency of a wave decreases, its wavelength increases

15 Calculating the Speed of Waves The speed of a wave is equal to its frequency multiplied by its wavelength. V = ƒ ʎ V=velocity/speed ʎ = wavelength and ƒ= frequency This tells you the speed of the oscillations through the material/medium.

16 Wave Interference: When waves encounter an obstacle or interact with matter, they experience interference. There are 4 types of wave interference Reflection Refraction Diffraction Absorption

17 Reflection

18 Refraction: When a wave moves through a medium that slows or bends the wave’s movement it is refracted Refraction of light causes objects to appear bent

19 Diffraction: When a wave bends around objects such as sound bending around corners

20 Absorption: When a wave encounters a medium and seems to disappear.

21 What is the difference between refraction and reflection? What is an example of a wave that is reflected? What is an example of a wave being refracted?

22 Interference Continued Constructive Interference When 2 waves that are “in phase” with one another collide Their collision causes an increase in the waves effect Destructive Interference When 2 waves are “out of phase with one another collide Their collision causes a decrease or temporary disappearance of the wave

23 Interference Continued

24

25 HARMONIC MOTION Motion that repeats in cycles A cycle is a unit of motion that repeats over and over Harmonic Motion is different from Linear Motion

26

27 Harmonic Motion Graphs

28

29 Pendulum Simulation


Download ppt "WAVES AND WAVE PROPERTIES. Simulation Wave Information Waves are a travelling form of energy Waves can also carry information Sound Light Music electricity."

Similar presentations


Ads by Google