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Which phrase correctly defines the amplitude of a wave?(1 point) Responses the horizontal distance from the crest of one wave to the crest of the next wave the horizontal distance from the crest of one wave to the crest of the next wave the horizontal distance from the trough of one wave to the trough of the next wave the horizontal distance from the trough of one wave to the trough of the next wave the vertical distance from the crest or trough of a wave to the equilibrium the vertical distance from the crest or trough of a wave to the equilibrium the vertical distance from the trough of a wave to the crest the vertical distance from the trough of a wave to the crest As waves move through water, the water at any point rises and falls. At a given moment, two points along the wave’s line of travel that are 2 meters apart have each risen to form adjacent crests. Which measure is described by this observation?(1 point) Responses amplitude amplitude speed speed frequency frequency wavelength wavelength A sound wave passes through regions of the ocean with varying density. How do the varying wavelengths correspond to the density of the water? Select the two correct answers.(1 point) Responses Longer wavelengths correspond to greater density of the water. Longer wavelengths correspond to greater density of the water. Shorter wavelengths correspond to lesser density of the water. Shorter wavelengths correspond to lesser density of the water. Shorter wavelengths correspond to greater density of the water. Shorter wavelengths correspond to greater density of the water. Longer wavelengths correspond to lesser density of the water.

The speed of a wave is 2ms , and its wavelength 0.4 meters. What is the period of the wave?(1 point) Responses 2 seconds 2 seconds 0.8 seconds 0.8 seconds 5 seconds 5 seconds 0.2 seconds Two similar waves are traveling through the same medium. Wave A has a frequency that is 3 times that of wave B. How do their wavelengths compare? (1 point) Responses λA=λB lambda sub cap A is equal to lambda sub cap b λA=3λB lambda sub cap A is equal to 3 lambda sub cap b λA=13λB lambda sub cap A is equal to 1 third lambda sub cap b λA=19λB In a given period of time, 12,000 peaks of wave A and 15,000 peaks of wave B pass through the same medium under the same conditions. The wavelength of wave A is 2 m. What is the wavelength of wave B?(1 point) Responses 2.5 m 2.5 m 0.4 m 0.4 m 2.0 m 2.0 m 1.6 m The lowest frequency that we can hear is about 20 hertz. If the speed of sound in air is 340 meters/second, what is the wavelength of that low sound?(1 point) Responses 17 m 17 m 170 m 170 m 6,800 m 6,800 m 0.059 m 0.059 m A stationary source produces a sound wave at a frequency of 100 Hz. The wave travels at 1125 feet per second. A car is moving toward the sound source at a speed of 200 feet per second. What is the wavelength of the stationary sound source and the wavelength that a person in the car perceives? (1 point) Responses wavelength of the stationary source: 9.25 ft; perceived wavelength: 11.25 ft wavelength of the stationary source: 9.25 ft; perceived wavelength: 11.25 ft wavelength of the stationary source: 13.25 ft; perceived wavelength: 11.25 ft wavelength of the stationary source: 13.25 ft; perceived wavelength: 11.25 ft wavelength of the stationary source: 11.25 ft; perceived wavelength: 13.25 ft wavelength of the stationary source: 11.25 ft; perceived wavelength: 13.25 ft wavelength of the stationary source: 11.25 ft; perceived wavelength: 9.25 ft wavelength of the stationary source: 11.25 ft; perceived wavelength: 9.25 ft When the string on a violin vibrates, waves move in both directions along the string, interfering with each other. Sometimes these waves interact to make nodes and antinodes. What are these kinds of waves called?(1 point) Responses superposition waves superposition waves electromagnetic waves electromagnetic waves standing waves standing waves frequency waves Owls communicate using long-wavelength hoots, while songbirds use short-wavelength tweets. Which of the sounds can be heard over a greater distance in a forest?(1 point) Responses Both the hoot and tweet will travel the same distance through the forest. Both the hoot and tweet will travel the same distance through the forest. hoot of the owl hoot of the owl Neither the hoot nor the tweet will be able to penetrate the forest. Neither the hoot nor the tweet will be able to penetrate the forest. tweet of the songbird tweet of the songbird The number of wavelengths that pass a point each second is called __________.(1 point) Responses amplitude amplitude wavelength wavelength medium medium frequency frequency The table below shows the speed of sound in water at different temperatures and salinities. Speed of Sound in Water at Different Temperatures and Salinities Temperature (°C) 0 10 20 30 Speed of sound in freshwater (ms ) 1,403 1,447 1,481 1,507 Speed of sound in seawater (ms ) 1,449 1,490 1,522 1,546 Which statement can be inferred about the speed of sound in freshwater and in seawater? (1 point) Responses At 80°C, the speed of sound in freshwater and seawater will be the same. At 80°C, the speed of sound in freshwater and seawater will be the same. Both temperature and salinity decrease the speed of sound in water. Both temperature and salinity decrease the speed of sound in water. The speed of sound increases as the density of water increases. The speed of sound increases as the density of water increases. The speed of sound increases as the salinity of water decreases. Consider the following list of properties. Which applies to light? A: Mechanical wave B: Electromagnetic wave C: Travels in circular paths D: Travels in a straight line(1 point) Responses A, B, and D A, B, and D A and C A and C A, B, and C A, B, and C B and D

Which of the following statements about light is true?(1 point) Responses The speed of light in a vacuum is 3⋅108 m/s. The speed of light in a vacuum is , 3 times 10 superscript 8 baseline m per s, . The speed of light in a vacuum depends on the frequency of the light. The speed of light in a vacuum depends on the frequency of the light. The speed of light in a vacuum depends on the wavelength of the light. The speed of light in a vacuum depends on the wavelength of the light. Light cannot travel through a vacuum. How many polarized filters are needed minimally to block light intensity?(1 point) Responses two filters perpendicular to each other two filters perpendicular to each other three filters perpendicular to each other three filters perpendicular to each other two filters parallel to each other two filters parallel to each other one filter Which color of light has the most energy and why?(1 point) Responses Red light has the most energy because it has the shortest wavelength. Red light has the most energy because it has the shortest wavelength. Red light has the most energy because it has the highest frequency. Red light has the most energy because it has the highest frequency. Violet light has the most energy because it has the longest wavelength. Violet light has the most energy because it has the longest wavelength. Violet light has the most energy because it has the highest frequency. In what way is an image formed by a mirror inverted?(1 point) Responses By refraction By refraction From left to right From left to right From top to bottom From top to bottom From front to back From front to back The table shows the speed of ultrasound waves in different tissues in the human body. Tissue Speed (m/s) Air 330 Fat 1,450 Water 1,480 Liver 1,550 Kidney 1,560 Blood 1,570 Muscle 1,580 Bone 4,080 What happens to an ultrasound wave that moves from muscle to bone? (1 point) Responses The frequency of the wave increases. The frequency of the wave increases. The wavelength of the wave decreases. The wavelength of the wave decreases. The wavelength of the wave increases. The wavelength of the wave increases. The frequency of the wave decreases. If a wave transfers from one medium to another medium with different properties, which statement is true?(1 point) Responses The frequency changes, while the wavelength and the speed of the wave remain the same. The frequency changes, while the wavelength and the speed of the wave remain the same. The period and the speed of the wave change proportionally. The period and the speed of the wave change proportionally. The frequency remains constant. The frequency remains constant. The period changes, while the wavelength and the speed of the wave remain the same. You are fishing in a boat anchored in a bay. You notice that the current is in the eastern direction with small wave crests that are 15 meters apart, and they are gently rocking the boat once every 5 seconds. You decide to lift the anchor and begin trolling slowly to the west at 2.0 meters/second. In 1–2 sentences, explain the strategy for calculating how often the wave crests will rock the boat in this situation based on your investigation. Suppose you were stranded on a desert island with only a convex lens and a mirror. Describe how you could use each of these tools to signal for help. (2 points)