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.
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
The ________________________ of a wave is the number of wavelengths that pass by a point each _______________.
Frequency is measured in units of __________________________
Period refers to the ______________ of _________________ as a result of time. The amount of time it takes for a wave to complete one full ________________.
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
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 ________________.
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 ________________.
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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