Sound and Light Test

Transcription

1 Name: ate: 1. stretched spring attached to two fixed points is compressed on one end and released, as shown below. 3. n engineer in a moving train blows the train s horn. The train is moving away from a person standing on the ground. ompared to the frequency of the sound that the engineer hears, the person standing on the ground hears a sound with. the same wavelength.. more variation in tone.. greater amplitude.. a lower frequency. The resulting wave travels back and forth between the two fixed ends of the spring until it comes to a stop. This mechanical wave is an example of a. transverse wave.. longitudinal wave.. superpositioned wave.. refracted wave. 4. Which of the following choices best explains why grass on a distant hillside appears green?. Grass reflects all colors except green.. Grass absorbs only green light from the sun.. Grass reflects green light more than any other color.. Grass transmits green light in the same way that green-colored cellophane does. 2. Objects appear different in size and shape in a container of water due to. refraction of the light waves.. interference of the water and light waves.. polarization of the light waves.. diffraction of the light waves. page 1

2 5. The Rocket s Red Glare 6. Which picture shows how a mirror reflects light?.. On the 4th of July there was a fireworks display near the onnecticut River in Hartford. There were many different colorful fireworks in the show. spectator saw light from a fireworks explosion then heard a loud noise a few seconds later from the same explosion. The sound was heard a few seconds later because the sound.... originated a few seconds after the light. traveled farther than the light. traveled more slowly than the light 7. Use the picture below to answer the following question.. reflected from a different location The spoon appears to be broken where it enters the water because. the light is reflected by the water.. the light is absorbed by the water.. the light is bent by the water.. the light is dissolved by the water. page 2

3 8. enise was driving east over a hill in the afternoon, shortly after a rain shower. Suddenly the sun broke through the clouds, and she saw a rainbow ahead of her. Which of the following made the rainbow possible? 10. The picture below shows a duck swimming in a lake.. Sunlight can be separated into all the colors of the rainbow.. Water reflects sunlight like a mirror to make it look colored.. Overhead black clouds reflect in puddles to cause a mirage.. ir pollution causes the sky to look colored under these conditions. 9. beam of light is shining on the surface of a liquid. Which diagram shows what happens when the light is reflected by the liquid?. student sees a mirror image of a duck in the water of the lake. What causes this mirror image?. black light. refracted light. reflected light. absorbed light. 11. Sound reaches our ears because sound makes air particles. heat up.. cool down.. slow down.. vibrate student places a sheet of black construction paper on her desk. What happens to most of the light that strikes the black construction paper?. The light is bent by the paper... The light reflects off the paper.. The light is absorbed by the paper.. The light passes through the paper. page 3

4 13. The diagram below shows a wave trace. 16. The figure below shows a spring with a wave traveling through it. Which type of wave is illustrated?. sound. transverse. longitudinal. electromagnetic istance Z is a measure of. amplitude.. frequency.. wavelength.. wave speed. 14. The figure below shows regions of the electromagnetic spectrum. 17. Visible light passes through glass. Other types of electromagnetic radiation are able to pass through other materials in a similar way. Which of the following are used in medical technology because they can pass through some parts of the human body?. x-rays. infrared waves. microwaves. ultraviolet rays Which of the following waves has the highest frequency? 18. The illustration below shows wave traces of recorded sound waves on two computer screens.. visible light. microwaves. ultraviolet rays. infrared radiation 15. Which of the following best describes the relationship between frequency and wavelength of electromagnetic waves?. If the frequency remains constant, the wavelength increases.. The wavelength decreases as the frequency decreases.. The frequency increases as the wavelength decreases.. If the wavelength remains constant, the frequency increases. Traces and represent two different sounds with the same time scale horizontally. From a comparison of the wave traces, which of the following correctly describes the relationship of sound to sound?. Sound has a higher velocity.. Sound has a higher amplitude.. Sound has a higher frequency.. Sound has a longer wavelength. page 4

5 19. The distance between Earth and the Moon was determined by measuring the time it took for light waves from Earth to travel to the Moon and back. Why was it not possible to use sound waves for this experiment?. Sound waves must move through a substance.. Sound waves would change frequency on the return to Earth.. Sound waves move too slowly for the technique to be accurate.. Sound waves move more slowly in Earth s atmosphere than in space. 20. Which of the following is possible due to longitudinal waves?. seeing the color red. getting a tan at the beach. hearing the sound of the ocean. riding a wave on a surfboard 22. Which of the following observations is a result of the oppler effect?. Noise from across a lake is louder at night than during the day.. person walking notices that the pitch of a car s engine decreases as the car passes by.. eats are produced when two tuning forks with different frequencies are heard together.. person hears the sound from a radio more clearly in certain areas of a room than in others. 23. star suddenly explodes. Which of the following types of waves reach Earth s surface?. light only. sound only. sound followed by light. light followed by sound 21. People perceive sound differently in air than they do under water. Which of the following correctly compares the motion of sound waves in air and in water?. Sound waves travel faster in air than in water.. Sound waves travel slower in air than in water.. Sound waves travel in air but do not travel in water.. Sound waves travel at the same speed in air and in water. page 5

6 24. Use the information below to answer the following question(s). INVESTIGTING PLNE MIRROR 27. In which media would sound waves travel fastest?. a vacuum. air. water. glass 28. n echo heard when a person shouts in a canyon is due to the sound waves being. mixed. refracted Several students placed a toy truck on a table in front of a plane mirror and viewed the image of the truck in the mirror. Next, the students moved the toy truck to different positions and observed the reflected images of the truck from each position. How does the size of the image of the toy truck compare to the size of the actual toy truck?. the image is larger than the actual truck. the image is smaller than the actual truck. the image is the same size as the actual truck. the image size depends on the light behind the toy truck 25. Use the diagram below to answer the following question(s). student produces a series of waves, as shown below.. diffracted. reflected 29. The loudness of a sound is dependent upon which wave property?. wavelength. amplitude. frequency. pitch 30. The image in a plane mirror is. virtual and upright. virtual and inverted. real and upright. real and inverted 31. When the sound made by one tuning fork causes another tuning fork to vibrate, the principle demonstrated is. reflection. refraction. interference. resonance 32. light ray is incident on a plane mirror as shown in the diagram below. Which number in the diagram represents a wavelength? Which is the lowest point of a transverse wave?. amplitude. crest. period. trough Which ray best represents the reflected ray?.... page 6

7 33. Objects that are far away appear to be closer when seen through which of the following two instruments?. Microscope and magnifying glass. Telescope and binoculars. Microscope and telescope. inoculars and magnifying glass 34. X-rays are used as a diagnostic tool and in the treatment of certain diseases. For which of the following conditions are they most likely to be used as treatment?. roken kneecap. ancer 36. uring a space walk, an astronaut lets go of a tool, causing it to float away and bounce off the side of the space shuttle. Why does the astronaut see the tool hit the shuttle but not hear it?. Light waves cannot travel through a vacuum. However, sound waves can.. Sound waves cannot travel through a vacuum. However, light waves can.. Neither sound nor light waves can travel through a vacuum.. oth sound and light waves can travel through a vacuum. 37. Nate placed his marble game above a stereo speaker, as shown in the picture below.. iabetes. nemia 35. In the diagram below, similar types of waves with the same amplitude travel in the same medium. ompared to wave X, which statement is correct?. Wave Y has greater speed.. Wave Y has less energy.. Wave Y has a lower frequency.. Wave Y has a shorter wavelength. When Nate turned the speaker on, the marbles shook and some fell to the floor. Which of these statements best explains the motion of the marbles?. Electricity from the speaker pushed the marbles.. Magnetic energy from the speaker attracted the marbles.. Heat produced by the speaker caused the marbles to expand.. Sound waves from the speaker caused the marbles to vibrate. page 7

8 38. Use your understanding of the transmission of sound and the table to answer the following question. 39. For the solids listed in the data table, which seems to be true about the relationship between the speed of sound and density? One could conclude that sound is transmitted fastest in. solids.. liquids.. gases.. a vacuum.. The speed of sound decreases as density increases.. The speed of sound increases as density increases.. The speed of sound increases as density decreases.. There is no apparent relationship between density and the speed of sound. 40. student is listening to the radio and realizes that the volume is too low. When she turns up the volume, which part of the sound waves is she changing?. wavelength. frequency. period. amplitude page 8

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