BHS Secondary Science

Physics Unit 6: Waves

Science Core Standards

Learning Progressions

STANDARD V: Students will understand the properties and applications of waves. Objective 1: Demonstrate an understanding of mechanical waves in terms of general wave properties. a. Differentiate between period, frequency, wavelength, and amplitude of waves. b. Investigate and compare reflection, refraction, and diffraction of waves. c. Provide examples of waves commonly observed in nature and/or used in technological applications. d . Identify the relationship between the speed, wavelength, and frequency of a wave. e. Explain the observed change in frequency of a mechanical wave coming from a moving object as it approaches and moves away (i.e., Doppler effect). f. Explain the transfer of energy through a medium by mechanical waves. Objective 2: Describe the nature of electromagnetic radiation and visible light. a. Describe the relationship of energy to wavelength or frequency for electromagnetic radiation. b. Distinguish between the different parts of the electromagnetic spectrum (e.g., radio waves and x-rays or visible light and microwaves). c. Explain that the different parts of the electromagnetic spectrum all travel through empty space and at the same speed. d. Explain the observed change in frequency of an electromagnetic wave coming from a moving object as it approaches and moves away (i.e., Doppler effect, red/blue shift). e. Provide examples of the use of electromagnetic radiation in everyday life (e.g., communications, lasers, microwaves, cellular phones, satellite dishes, visible light).

• Describe the terms and the general properties of waves . • Identify the different type of waves in the electromagnetic spectrum. • Describe and use the relationship between of wavelength, frequency, and wave speed of waves • Explain how electromagnetic radiation is used in daily life. • Describe how waves behave when interacting with boundaries. • Identify how the motion of a wave source changes the frequency of a wave. • Calculate the energy of an electromagnetic wave. • Identify examples of mechanical waves

Key Terms Wave, mechanical waves, electromagnetic waves, electromagnetic spectrum, waves length, frequency, amplitude, period, reflection, refraction, diffraction Doppler effect, Medium, radio waves, microwave, infrared, visible light, ultraviolet, X-Ray, gamma-ray Essential Extension (If Time Permits) Eliminate

How do waves transfer energy? • What is a mechanical wave? • What is a transverse wave? • What is a longitudinal wave? • What is the difference between the period and frequency of a wave?

Color Mixing Optics Beats Sound

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