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# Science and Technology/Engineering Curriculum Framework - Spring 2001

## Physics, Grades 9 or 10

Additional Ideas for Developing Investigations and Learning Experiences and Suggested Extensions to Learning in Technology/Engineering are in Appendix III.

### Waves

Broad Concept: Waves carry energy from place to place without the transfer of matter.

 4.1 Differentiate between wave motion (simple harmonic nonlinear motion) and the motion of objects (nonharmonic).* 4.2 Recognize the measurable properties of waves (e.g., velocity, frequency, wavelength) and explain the relationships among them. * 4.3 Distinguish between transverse and longitudinal waves. 4.4 Distinguish between mechanical and electromagnetic waves. * 4.5 Interpret and be able to apply the laws of reflection and refraction (qualitatively) to all waves. 4.6 Recognize the effects of polarization, wave interaction, and the Doppler effect. 4.7 Explain, graph, and interpret graphs of constructive and destructive interference of waves. 4.8 Explain the relationship between the speed of a wave (e.g., sound) and the medium it travels through. 4.9 Recognize the characteristics of a standing wave and explain the conditions under which two waves on a string or in a pipe can interfere to produce a standing wave.

Boldface type indicates core standards for full-year courses. An asterisk (*) indicates core standards for integrated courses.