<p>Seat # ______Name ______Page 60</p><p> http://www.acoustics.salford.ac.uk/schools/index1.htm</p><p>What is Sound? 1. Click the rulers. a. What do the rulers cause to vibrate? ______b. We hear it as ______c. The longer the ruler sticks out over the edge of the table, the ______the sound 2. Sound Waves a. Sound is formed by ______b. It is ______energy Click “Show Me” Click the wave c. Air is pushed together at a higher pressure ______d. And pulled apart at a lower pressure ______e. These changes make ______waves 3. Pitch and Frequency Click the Buttons a. How do the waves change? ______b. Another name for Pitch is ______c. Frequency is measured in ______d. The Frequency of a whistle is ______The Frequency of a bass drum is ______4. Loudness and Decibels Click the Buttons a. How do the waves change? ______b. Loudness is measured in ______c. What are the decibels of a Rock Concert? ______What are the decibels of a normal conversation? ______5. The Ear a. Sound waves travel down the ______and cause the ______to vibrate. b. ______in the Cochlea convert vibrations to electrical signals which are sent to the ______Lesson 1: Sound Waves 1. Key Words: a. Speed ______b. Frequency ______c. Wavelength ______d. Longitudinal ______e. Transverse ______2. The wave is a ______that travels across the crowd 3. Do the people travel with the crowd? ______4. Wave Types a. What are the two main types of waves? ______& ______5. Speed: a. Waves travel at different ______b. Ocean waves are slower than ______waves c. How fast is sound? ______d. How fast are radio waves? ______6. Frequency: a. Draw one complete wave: b. How many waves passed in 5 seconds? ______c. Frequency is ______/______7. Wavelength: a. What symbol do we use for wavelength? ______b. What are the units? ______c. The slower the ball; the ______the wavelength. 8. Longitudinal Wave (compression) a. Longitudinal waves vibrate ______to the direction the wave travels. b. What is an example of a longitudinal wave? ______9. Transverse Wave a. Transverse waves vibrate at ______to the direction the wave travels b. What is an example of a transverse wave? ______</p><p>Lesson 2: Wave Equation 1. Wave Equation: a. As frequency increases, wavelength ______b. As speed increases, wavelength ______c. What is the equation for speed? ______d. What is the speed of a wave with frequency t 12022.5Hz and wavelength at 0.5m? ______e. What is the speed of a wave with frequency t 3022.5Hz and wavelength at 0.5m? ______f. What is the speed of a wave with frequency at 300Hz and a wavelength at 0.5m? ______g. What is the speed of a wave with frequency at 500Hz and a wavelength at 0.8m? ______2. Sound Transmission: a. Sound waves travel quickly through a ______because particles are ______b. Sound waves travel slowly through a ______because particles are ______c. What is the speed of a wave with frequency at 300Hz and a wavelength at 1.5m? ______d. What is the speed of a wave with frequency at 300Hz and a wavelength at 2.1m? ______e. Diagram the equation as a triangle: f. What are the three equations: ______g. Sound has a velocity of 340m/s and a frequency of 2 kHz, what is the wavelength? ______</p><p>Lesson 3: Wave Behavior 1. Key Words: a. Reflection is ______b. Refraction is ______c. Diffraction is ______2. Reflection: a. Two Laws of Reflection i. The angle of ______equals the angle of ______ii. The ______ray, the ______and the ______all lie in the same ______</p><p>3. Echoes: a. What is an echo? ______b. Fishing boats use echoes to detect ______and ______c. What is this type of echo called? ______d. What is the speed of sound in water? ______e. How many seconds for the sound to reach the bottom? ______f. What is the formula for speed? ______g. How far away is the bottom? ______h. What would happen if a school of fish swam under the boat? ______4. Echoes in Use: a. What is the distance? ______b. What is the speed of sound? ______c. What is the formula for speed? ______d. What is the time delay before the echo is heard? ______5. Refraction: a. What happens to sound when it enters a denser material? ______b. When waves change mediums, they change ______c. What happens to the waves above in the shallower water? ______d. They also change ______6. Refraction: a. When do trains sound louder? ______b. During the day the sound is blocked by ______c. Sound waves travel ______in cold air d. The change in temperature causes the waves to ______over the buildings. 7. Diffraction: a. You can hear someone around a corner before you ______them b. Light has a ______wavelength so only ______objects can effect its ______c. Sound waves can ______objects of ______to their wavelength. 8. Diffraction: a. If the gap size equals wavelength, the diffraction ______and the wave ______</p>