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Waves: Sound and Light 14. D (em) Amplitude: AA Wavelength: 4 D (m Period: Frequency 10 15 20 t (5) Wave Speed: 15. What is the region of a sound wave in which the density and pressure are less than normal? ...more than normal? 16. Compare how sound travels through solids, liquids, and gases. 17. Why can't there be sound in a vacuum? 18. What is the difference between a longitudinal and a transverse wave? 19. Light behaves as a. waves b. particles c. both d. neither 20. Which of the following waves is fundamentally different? a. Radio Waves b. Gamma Rays c. Light Waves d. Sound WavesTHE ELECTRO MAGNETIC SPECTRUM Wavelength Radio, Microwave Infrared Visible Ultraviolet X-Ray Gamma Ray 10 2 105 - Frequency 1016 21. Compared to the velocity of radio waves, the velocity of visible light is a. the same b. slower c. faster d. undetermined 22. Electromagnetic waves with higher frequencies have wavelengths that are a. longer b. shorter c. brighter d. prettier 23. Which color of light has the longest wavelength? a. red b. yellow C. green d. blue 24. Which of the following electromagnetic waves has the highest frequency? a. Infrared b. X-Rays c. Radio d. Visible Light 25. Which of the following waves has the largest wavelength? 26. Match the vocabulary word to its definition: Reflection a. a wave bending as it moves into a new material Refraction b. two or more waves adding or subtracting together Diffraction c. a wave bouncing off of a surface Interference d. a wave spreading around a barrier27. Draw the ray diagram and describe the 3 attributes of the image of a concave mirror when the object is located somewhere between the focal point and twice the focal-point distance from the mirror ist the 3 attributes of the image. 28. The Law of Reflection says the angle of reflection is EQUAL TO / SMALLER THAN / BIGGER THAN the angle of incidence Law of Relle Hon Electricity and Magnetism 29. Like charges a. Attract b. Repel c. Neutralize 30. Two charged spheres are repelling each other as they hang from the ceiling. What can you say about their charges? a. one is positive, the other is negative o. both are positive . both are negative d. both are positive or both are negative31. From the picture below, what can you conclude about the charges? have opposite charges have the same charge all have the same charge 32. How much voltage does an appliance draw if it is rated at 600 W and carries 5.5 A of current? 33. The heating element in an electric kettle has a resistance of 30 $2. What is the current in the heating element when it is connected to a 230 V supply? 34. How do voltage and the flow of current differ from series circuits and parallel circuits? 35 Complete the table of values for R, Total 1052 R ,36. Reminder: 1 52 = 1000 42 Complete the table of values for this circuit: 780 0 SRI R $ 3.310 15 10 R, Total IJV R 780 0 15KQ 33k0 37. What bulbs would go out if? Bulb A burnt out? Bulb B burnt out? Bulb C bum out? Bulb D burn out? Bulb E burn out? Bulb F burn out? 38. What happens when a magnet breaks?ng_Exam_Study_Guide.pdf 39. Draw the compass needles as they react to the magnetic field about this magnet N 40. The magnetic field of a bar magnet is shown in the figure below, Is the North pole at A or B?Momentum, Work, Power, and Energyr Fill in the formulas: Kinetic Energv Potential Energy m 1. Which of the following has the greatest momentum? a. 1500 kg at 30 m/s b. 2200 kg at 25 m/s c. 1200 kg at 50 m/s 2. A ball moving at 8 m/s has a momentum of 240 kg-m/s. What is the ball's mass? 3. What does Conservation of Momentum say? El 4. A railroad car with a mass of 12000kg moves along the track at 3m/s. It picks up a stationary caboose with a mass of 9000kg. What is the new velocity of the two cars after theyr stick together? 5. Two ice skaters start at rest, face each other and push off. Ice skater #1 has a mass of 150kg. If ice skater #1 moves back at 4.5m/s and ice skater #2 moves back at 6.0m/s, what is the mass of skater #2? 6. Explain why a book on the top of a bookshelf has more potential energy than an ant on the top of a shoe. 7. Explain why a truck on the highway has more kinetic energy than a baby crawling on the floor. 8. Explain why more work is done by lifting a 200N box up 20cm off the floor than sliding a 35N block 20cm on a table. 9. Explain why a person running up the stairs uses more power than if they were walking up the same stairs. 10. A pinecone with a mass of 2.0kg rolls off the edge of a roof that is 3.0m off the ground. a. What was the pinecone's potential energy on the roof before it rolled off? b. How much kinetic energy does it right before it hits the ground? c. It takes a squirrel 1.5N of force to push the pinecone 8m. How much work did it do?11. Label the points of maximum potential energy (PE) 8; kinetic energy (KE). 12. In each of the following scenarios, decide whether or not work is being done on the object. a. A crane lifts a large container off the ground. YES MD b. You lay on the couch and watch TV. YES NO c. A car waits at a red light. YES NO d. When the light turns green, the car accelerates down the road. YES NO e. You push your bed across the floor. YES NO f. You carry a glass of water across the kitchen. YES NO 13. Match the vocabulary word to its definition: Kinetic Energy a. rate at which work is done Potential Energy b. a measure of mass in motion Power c. energy of motion Work d. force used over a distance Momentum e. stored energy