(Note: This grade band endpoint was moved from K–2.)Īlignment agreement: Thanks for your feedback! Waves of the same type can differ in amplitude (height of the wave) and wavelength (spacing between wave peaks). When waves move across the surface of deep water, the water goes up and down in place there is no net motion in the direction of the wave except when the water meets a beach. Waves, which are regular patterns of motion, can be made in water by disturbing the surface. The currents may have been produced to begin with by transforming the energy of motion into electrical energy.Įnergy can be transferred in various ways and between objects.ĭevelop a model of waves to describe patterns in terms of amplitude and wavelength and that waves can cause objects to move.ĭevelop a model using an analogy, example, or abstract representation to describe a scientific principle.Īlignment agreement: Thanks for your feedback! Science findings are based on recognizing patterns. In such collisions, some energy is typically also transferred to the surrounding air as a result, the air gets heated and sound is produced.Īlignment agreement: Thanks for your feedback! Light also transfers energy from place to place.Īlignment agreement: Thanks for your feedback! Energy can also be transferred from place to place by electric currents, which can then be used locally to produce motion, sound, heat, or light. When objects collide, energy can be transferred from one object to another, thereby changing their motion. Make observations to produce data to serve as the basis for evidence for an explanation of a phenomenon or test a design solution.Īlignment agreement: Thanks for your feedback!Įnergy can be moved from place to place by moving objects or through sound, light, or electric currents.Īlignment agreement: Thanks for your feedback! Energy is present whenever there are moving objects, sound, light, or heat. This activity focuses on the following Three Dimensional Learning aspects of NGSS: Make observations to provide evidence that energy can be transferred from place to place by sound, light, heat, and electric currents.Ĭlick to view other curriculum aligned to this Performance Expectation Explain how engineers use their knowledge of sound waves to create devices to help people hear.Describe sound in terms of volume, pitch and frequency.Relate that sound energy can be seen as well as heard.As the vibration changes, so does the sound. Describe how sound is created by the vibration of certain objects.And, ocean navigation equipment includes sound imaging equipment so ships can determine the unseen terrain of an ocean floor.Īfter this activity, students should be able to: For example, some medical equipment uses sound energy to create screen images of what is going on, unseen, in the human body. Engineers also design many types of imaging devices that change ultrasonic and infrasonic sound energy into visual images. This is because the energy is transferred to a lot of water which is too heavy to move very fast with the small amount of energy that the tuning fork vibrates with.Biomedical engineers are especially interested in sound waves because they design devices such as hearing aids or computerized voices that help people who cannot speak or hear be able to create or identify these sound waves. If you dip the fork deeply, the vibrations quit. If the fork just touches the water, a small amount of water from the top gains kinetic energy and flies out of the bowl. When a vibrating tuning fork is placed in a bowl of water, the energy from the fork is transferred into the water. The tuning forks included in the ASA Activity Kit for Teachers are all manufactured with the same material so a person can look at the tine length and see that lower frequency tuning forks have longer tines while higher frequency forks have shorter tines. However, multiples of frequency can work but are more quite. Frequencies that are near, for example 880 Hz and 883 Hz, will not work. The frequencies of the two forks have to be the same for best results. No need to touch them or to have them both touching a table. For example, middle C is 261.5 Hz and the next C is an octave higher at 523 Hz, while the next octave up has a C of 1046 Hz.Ī vibrating tuning fork can cause another quiet tuning fork to start vibrating simply by being placed near each other. If they are different brands or have tuning knobs on the ends, this question won’t work.Ī musical note one octave higher than the previous is twice the frequency of the previous. Question 6 is only appropriate if the set of tuning forks are uniform. In-depth background information for teachers and interested students.
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