Disciplinary Waves

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Structures have particular frequencies at which they resonate when some time-varying force acting on them transfers energy to them. This phenomenon e. When a wave passes an object that is small compared with its wavelength, the wave is not much affected; for this reason, some things are too small to see with visible light, which is a wave phenomenon with a limited range of wavelengths corresponding to each color.

When a wave meets the surface between two different materials or conditions e. The change of speed of the wave when passing from one medium to another can cause the wave to change direction or refract. These wave properties are used in many applications e. By the end of grade 2.

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Waves, which are regular patterns of motion, can be made in water by disturbing the surface. When waves move across the surface of deep water, the water goes up and down in place; it does not move in the direction of the wave—observe, for example, a bobbing cork or seabird—except when the water meets the beach. Sound can make matter vibrate, and vibrating matter can make sound.

Harnessing the waves

By the end of grade 5. Waves of the same type can differ in amplitude height of the wave and wavelength spacing between wave peaks. Waves can add or cancel one another as they cross, depending on their relative phase i.


NGSS Hub - Disciplinary Core Ideas

Boundary: The discussion at this grade level is qualitative only; it can be based on the fact that two different sounds can pass a location in different directions without getting mixed up. By the end of grade 8.

A simple wave has a repeating pattern with a specific wavelength, frequency, and amplitude. A sound wave needs a medium through which it is transmitted.

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Geologists use seismic waves and their reflection at interfaces between layers to probe structures deep in the planet. By the end of grade The wavelength and frequency of a wave are related to one another by the speed of travel of the wave, which depends on the type of wave and the medium through which it is passing.

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The reflection, refraction, and transmission of waves at an interface between two media can be modeled on the basis of these properties. Combining waves of different frequencies can make a wide variety of patterns and thereby encode and transmit information. Information can be digitized e. Resonance is a phenomenon in which waves add up in phase in a structure, growing in amplitude due to energy input near the natural vibration frequency.

Sediment Dynamics

Structures have particular frequencies at which they resonate. Toggle navigation Menu.

B: Chemical Reactions PS1. C: Nuclear Processes PS2. A: Forces and Motion PS2. B: Types of Interactions PS2. The background and smart intuitions of students rendered the learning path very dynamic and ambitious. The activities started by investigating the basic properties of waves by means of a Shive wave machine. In order to make quantitative observed phenomena, the students used a camcorder and series of measures were obtained from the captured images. By checking the resulting data, it arose some learning difficulties especially in activities related to the laboratory.

This experience was the starting point for a further analysis on disciplinary knots and learning problems in the physics of waves in order to elaborate a teaching-learning proposal on this topic.

The Role of Coastal Processes

Skip to main content. Advertisement Hide. Conference paper First Online: 21 March This process is experimental and the keywords may be updated as the learning algorithm improves. This is a preview of subscription content, log in to check access.

Disciplinary Waves Disciplinary Waves
Disciplinary Waves Disciplinary Waves
Disciplinary Waves Disciplinary Waves
Disciplinary Waves Disciplinary Waves
Disciplinary Waves Disciplinary Waves

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