PPT-Waves, Sound and Light Chapter 17 & 18

Mechanical Waves A mechanical wave is created when a source of energy causes a vibration to travel through a medium A mechanical wave is a disturbance in matter that carries energy from one place to another. Students . will explore the wave nature of sound and electromagnetic radiation. . Identify . the characteristics of electromagnetic and . mechanical waves. . . b. Describe how the behavior of light waves . Comparing Wave Properties & Energy. Essential Standard. 6.P.1Understand the properties of waves and the wavelike property of energy in earthquakes, light and sound waves.. Clarifying Objective. 6.P .. 1.1 The Nature of Sound . I. Essential Question: . What is sound and how does it move? . II. Key Vocabulary. Density:. the amount of matter in a given space or volume. . Found by dividing the mass by the volume. . the Electromagnetic Spectrum. Waves. All waves carry … ENERGY!!!. Electromagnetic Waves (light) . Light waves are . transverse. waves. Electromagnetic. Radiation. Energy emitted from the . S8P4. . Students will explore the wave nature of sound and electromagnetic radiation. . Identify . the characteristics of electromagnetic and . mechanical waves. . . b. Describe how the behavior of light waves . Have your science notebook out ready to take notes. Grab the sheet from the front. Brainstorm everything you currently know about sound. Be ready to share. . Sound Vibration. Is a wave that vibrates particles of matter. Students will explore the wave nature of sound and electromagnetic radiation. . Identify . the characteristics of electromagnetic and . mechanical waves. . . b. Describe how the behavior of light waves . Sound. Sound waves are compressional waves.. Two regions: compressions and rarefactions. Sound travels faster in liquids and solids than in gases.. Why? The molecules in liquids and solids are closer together.. What is Sound Energy?. . is a wave of vibrations that spreads from its source. . As sound travels through a material, the molecules that make it up . . in a kind of pattern. . - . Recognize that light waves, sound waves, and other waves move at different speeds in different materials.. . ALSO ASSESSES: SC.7.P.10.2 . Observe and explain that light can be reflected, refracted, and/or absorbed. . Section 1. Objectives. 1. Explain the relationship among waves, energy, and matter. 2. Describe the difference between transverse waves and compressional waves. A. Waves Carry Energy. Waves (rhythmic disturbances that carry energy without carrying matter) can carry energy by itself or with matter. Producing and Detecting sound. What is sound?. The sound you hear is sound waves that can only travel through matter.. Sound waves are longitudinal waves. . Sources of sound. Every sound comes from a vibration, which is the energy that the wave uses to carry the sound.. vibrations. - repetitive back and forth motions. Waves – a traveling . disturbance . that carries . energy . from one location to another. . Think about waves like . ripples . in a pond. . Mechanical Waves. Remain as quiet as you can for 1 minute.. I will tell you when to begin, and when to stop.. In the margin of your paper, write down all of the different sounds that you hear in the environment around you..