Wave Properties

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Wave Properties

S8P4. Students will explore the wave nature of sound and electromagnetic radiation.

d. Describe how the behavior of waves is affected by _______________ (such as air, water, solids).

e. Relate the properties of __________ to everyday experiences.

f. Diagram the parts of the wave and explain how the parts are _____________ by changes in amplitude and pitch.

Wave Energy

Wavelength is the ___________ between ___________ successive and comparable points on a wave.

The _____________ wavelength is the _________________between two successive crests or two successive ______________.

The wavelength of a longitudinal wave is the distance between two adjacent ____________________ or rarefactions.

Amplitude is a measure of wave ___________________

Amplitude is related to the distance between the ___________ (high point of a wave) or the ____________ (low point of a wave) and the wave’s resting position.

The larger the amplitude the taller the wave, and the more _________ it carries.

The _________________ of a transverse wave is determined by the height of the crest or ____________ of the trough

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The ________________________ of a wave is the number of wavelengths that pass by a point each _______________.

Frequency is measured in units of __________________________

Period

Period refers to the ______________ of _________________ as a result of time. The amount of time it takes for a wave to complete one full ________________.

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Pitch

Pitch refers to the ______________ or _____________________ of a sound.

Pitch depends on how ________________t the source of the sound is vibrating

To change the pitch:

Change the ________________ of the material vibrating

Change the __________________ of the material vibrating

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Wave Speed

The speed at which a wave travels is called _______________________.

Wave speed is measured in two ways

1st Time how ______________ a wave takes to get from point A to point B

2nd Calculate wave speed by using the following formula:

Speed = Wavelength X Frequency

Behavior of Light Waves

Waves do not always travel in one _______________________.

Often they bounce off _____________________ surface and then travel in another direction.

When any type of wave ___________ an obstacle or passes from one ___________ to another, it is possible that the wave will change in ____________, direction, or ___________________

Reflection occurs when a wave bounces back after striking a ________________.

Wave Reflection

When a sound wave reflects from a surface we generate an _____________

Wave reflection from ______________ depends on the characteristics of the ____________________

___________ hard surfaces reflect best

__________ soft surfaces reflect poorly

Energy not reflected is absorbed or ________________ through the material

Think of arrows pointing in the direction of the wave _______________

We can trace the path of these arrows

Refraction is the ________________ of a wave as it passes at an ____________ from one medium to another.

The break in the pencil appears because the light waves ___________ as they pass from the air into the water. This bending occurs because the air and the water have different densities. ________________ of light takes place when light passes from a medium having one density to a medium with a different ________________.

Wave Refraction

Diffraction refers to the ___________ spreading, and interference of waves when they go through a ____________ opening.

Diffraction occurs with any type, including ______________waves, ____________ waves, and electromagnetic waves. Diffraction is _______________ passing through a slit that is very narrow, smaller than the ________________ of the light wave. After the wave passes through the slit, a pattern of _____________ form in all directions, as if there were a wave _______________ right at the position of the slit itself.

Diffraction can also be detected when the slit is ____________ than the wavelength. When the slit is more than a wavelength wide, there is a diffraction ________________ that occurs right at the edges of the wave. The center part of the wave travels __________________at short distances, but the diffraction at the edges will cause a diffraction __________ when observed from longer distances.

Transmission is the passing of waves through a ____________. A radio wave is a type of electromagnetic wave produced at the radio station. The wave travels from the station's ___________________ out in all directions at the speed of light.

Absorption is the _______________ of an electromagnetic wave into a medium. It is the opposite of _______________. You see different ____________ because of the selective absorption of visible light.

Some materials _______________ all wavelengths of visible light. A material that ______________ all wavelengths of visible light appears black. By contrast, a material that ____________________ all wavelengths of visible light appears white.

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Low pitch

Low frequency

Longer wavelength

High pitch

High frequency

Shorter wavelength

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