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UNIT PLAN Subject: Physical Science Unit #_8_ Unit Name_Nature and Properties of Waves _ Big Idea/Theme: Waves transfer energy from place to place without transferring matter. Culminating Assessment: On a written assessment, students will be able to solve problems involving velocity, frequency and wavelengths, diagram and label the two types of waves, and diagram and label the electromagnetic spectrum. Create a poster, brochure or PowerPoint explaining earthquakes including how and why the waves form, and why they form in the places they do form. Unit Understanding(s) Unit Essential Question(s): Students will understand that… What are the two types of waves? energy of waves is transferred by How is energy carried through interaction with matter. matter? transverse and longitudinal What are the properties of (compressional) mechanical waves transverse waves? have similar properties. What are the properties of Waves have characteristics. longitudinal (compressional) waves? the formulas v = f and v = d/t to solve problems related to the What are the parts of a wave? velocity of waves. Indicate by draw and label format. characteristics of the What is wave velocity? electromagnetic spectrum (include a What is frequency? range of wavelengths, frequency, What is wavelength? energy, and propagation without a What are the parts of the medium). electromagnetic spectrum? Sound and light waves are related The electromagnetic spectrum in terms of reflection, interference consists of what type of wave? refraction, and defraction. How is the electromagnetic the frequency and the pitch changes spectrum broken down according to of sound due to the Doppler effect. decreasing wavelength? (Increasing frequency) What is reflection? What is interference? What is refraction? What is defraction? What is pitch? How does the Doppler effect change the frequency of the waves and the pitch of the sound? Vocabulary Amplitude Frequency Rarefaction Transverse wave Acoustics Eardrum Music Sonar Cathode-ray tube Compressional wave Interference Refraction Trough Cochlea Echolocation Overtone Sound quality Electromagnetic wave Crest Medium Resonance Wave Decibel Intensity Pitch Ultrasound Gamma rays Infrared waves Radio waves X rays Incandescent light Opaque Microwaves Transceiver Coherent light Incoherent light Pigment Photon Ultraviolet waves Fluorescent light Index of refraction Polarized light Translucent Convex lens Focal point Real image Virtual image Transparent Convex mirror Microscope Reflecting telescope Concave lens Cornea Optical axis Refracting telescope Diffraction Period Standing wave Wavelength Doppler effect Loudness Resonator Carrier wave Global Positioning System Radiant energy Visible light Holography Mirage Total internal reflection Concave mirror Focal length Plan mirror Retina Students will know… / Students will be able to… Recognize that waves carry energy but not matter. Define mechanical waves. Compare and contrast transverse waves and compressional waves. Define wavelength, frequency, period, and amplitude. Describe the relationship between frequency and wavelength. Explain how a wave’s energy and amplitude are related. Calculate wave speed. State the law of reflection. Explain why waves change direction when they travel from one material to another. Compare and contrast refraction and diffraction. Describe how waves interfere with each other. Explain how sound travels through different mediums. Identify what influences the speed of sound. Describe how the ear enables you to hear. Recognize how amplitude, intensity, and loudness are related. Describe how sound intensity is measured and what levels can damage hearing. Explain the relationship between frequency and pitch. Discuss the Doppler effect. Distinguish between noise and music. Describe why different instruments have different sound qualities. Recognize some of the factors that determine how a concert hall or theater is designed. Discuss the uses of sonar. Explain how ultrasound is useful in medicine. Describe how electric and magnetic fields form electromagnetic waves. Explain how vibrating charges produce electromagnetic waves. Describe properties of electromagnetic waves. Describe the waves in the different regions of the electromagnetic spectrum. Compare the properties of different electromagnetic waves. Identify uses for different types of electromagnetic waves. Distinguish between amplitude modulation and frequency modulation. Describe how light waves interact with matter. *Describe the difference between light color and pigment color. *Explain how incandescent and fluorescent lightbulbs work. *Analyze the advantages and disadvantages of different lighting devices. *Explain how a laser produces coherent light. *Describe various uses of lasers. Describe how an image is formed in there types of mirrors. Identify examples and uses of plane, concave, and convex mirrors. Compare refracting and reflecting telescopes. South Carolina Academic Standards: PS-1: The student will demonstrate an understanding of how scientific inquiry and technological design, including mathematical analysis, can be used appropriately to pose questions, seek answers, and develop solutions. PS-7.1 PS-7.2 PS-7.3 PS-7.4 PS-7.5 PS-7.6 PS-7.7 Illustrate ways that the energy of waves is transferred by interaction with matter (including transverse and longitudinal/compressional waves). Compare the nature and properties of transverse and longitudinal/compressional mechanical waves. Summarize characteristics of waves (including displacement, frequency, period, amplitude, wavelength, and velocity as well as the relationships among these characteristics). Use the formulas v = f and v = d/t to solve problems related to the velocity of waves. Summarize the characteristics of the electromagnetic spectrum (including range of wavelengths, frequency, energy, and propagation without a medium). Summarize reflection and interference of both sound and light waves and the refraction and diffraction of light waves. Explain the Doppler effect conceptually in terms of the frequency of the waves and the pitch of the sound. Interim Assessment (formative) Formal/Informal Pre-assessment Class Participation Teacher Observations Graphic Organizer Notebooks Exit Slips Writing assignments Laboratory assignments Group Work Quizzes Tests Projects Key Criteria (to meet the standard/rubric) See rubric guide for the following rubrics: Brochure Poster PowerPoint