Structure and Function

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Presentation transcript:

Structure and Function Waves Structure and Function

What is a Wave? A wave is a disturbance that moves energy through matter or space.

How are Waves Made? All waves are created by vibrations. Examples: Earthquakes send out waves due to the Earth vibrating. You are able to speak because your vocal cords vibrate.

Mechanical Waves – A wave that can only travel through a medium. Medium – Matter that a wave travels through.

Types of Waves

1. Transverse Waves A wave in which matter moves at a right angle to the direction the energy is traveling. Examples Light Earthquake S-waves

2. Longitudinal or Compressional Waves A wave in which the matter moves parallel to the direction the energy in the wave travels. Example: Sound, Earthquake P-waves

Parts of a Wave Crest – the highest point of a wave. Trough – the lowest point of a wave.

Parts of a Wave 3. Wavelength – The distance from one point on a wave to the corresponding point on the next wave.

Wavelength & Frequency Frequency –The number of wavelengths that pass a certain point each second. higher frequency =shorter wavelength.

Wavelength and Energy Shorter wavelength=higher energy Longer wavelength=lower energy

Parts of a Wave 4. Amplitude – The amount of energy in a wave. The distance from the crest or trough to the midline of the wave. higher energy=higher amplitude.