1. Waves with differing amplitudes can best be described by which of the following statements?

A. Waves with different amplitudes have different energies. B. Waves with different amplitudes have the same amount of energy. C. Waves with different amplitudes have different wavelengths.

2. Which of the following electromagnetic waves has a wavelength longer than 10 cm?

A. radio waves. B. gamma rays. C. ultraviolet waves.

3. In an electromagnetic wave, A. the speed is the number of vibrations in one second.

B. as the frequency increases, so does the wavelength. C. the frequency equals that of the vibrating charge that creates the wave.

4. The back of a shiny silver spoon forms a convex mirror. A. True B. False

5. When waves arrive at the same time, interference can occur. If the waves arrive at the same time and overlap, the waves add together. This is

A. constructive interference. B. destructive interference. C. amplitude interference.

6. Translucent materials only absorb or reflect light but do not allow it to pass through.

A. True B. False

7. Are water waves, like ocean waves, transverse, longitudinal, or both? A. transverse waves.

B. longitudinal waves. C. both longitudinal and transverse waves.

8. Which sound wave property is most closely related to loudness? A. wavelength

B. frequency C. amplitude

9. Magenta, cyan, and yellow are the primary colors of light. A. True

B. False

10. Refraction of light would most likely occur when A. light hits a wall.

B. light hits a mirror. C. light travels through air and then through water.

11. You can tell that the Doppler effect is occurring when A. echoes are created.

B. a change in pitch is detected because a sound source is increasing in volume.

C. a higher pitch is detected than is being emitted by a sound source.

12. Why would a straw in a glass of water give the illusion of being broken?

A. the reflection of the light on the water's surface masks the part under water.

B. the refraction of the light waves coming from the part of the straw that is underwater makes it appear to be in a different location.

C. diffraction of the light waves causes your brain to misinterpret what you are seeing.

13. A sound wave's frequency is most related to that sound's A. pitch.

B. amplitude. C. energy.

14. What is the frequency of a wave? A. the distance between one point on a wave and the nearest point just like it. B. the number of waves that pass a given point in a specific time C. the amount of time one wavelength takes to pass a given point

15. Because they are brighter than incandescent lights, __________________ lights are often used for car headlights.

A. fluorescent B. sodium-vapor C. tungsten-halogen

16. If you want to lower the decibel value of the sound you hear at a concert you should

A. move farther away from the stage. B. stand directly in front of the stage. C. move closer to the stage.

17. Ultraviolet waves can cause all of the following except A. cancer.

B. sunburn. C. friction.

18. When a beam of light hits a mirror, the angle of reflection A. must equal the incident angle.

B. must be less than the incident angle. C. must be greater than the incident angle.

19. __________ are sometimes used to kill cancerous cells because they have the highest frequency and carry the most energy.

A. Infrared rays B. Gamma rays C. Ultraviolet rays

20. Which of the following describes how cell phones work?

A. The transceiver transmits one radio signal and receives another, each on a different frequency.

B. Carrier waves cause the electrons in an antenna to vibrate, which causes a changing electric field that is amplified and sent to the speaker apparatus.

C. Radio waves are transmitted along with an identification number, so your phone only picks up the waves with your identification.

21. If a wavelength has a frequency of 100 Hz, what would it indicate about that wavelength?

A. one wavelength passes by a given point every 100 seconds. B. 100 wavelengths pass a given point every 100 seconds. C. 100 wavelengths pass a given point in one second.

22. If a person is talking to you with sound waves that have a wavelength of 0.019 meters and a frequency of 18,000 Hz, what would you calculate as the speed of that sound? (wavelength x frequency = speed)

A. 950,000 m/s

B. 1.1 x 106 m/s C. 342 m/s

23. Both digital and analog television signals broadcast by communication satellites involve what type of electromagnetic radiation?

A. long-wavelength radio waves B. microwaves C. infrared waves

24. If the following types of medium are at the same temperature, sound would typically travel the fastest through a

A. gas. B. liquid. C. solid.

25. A _____________ lens is thinner in the middle than at the edges, and the light rays bend outward, away from the optical axis.

A. concave B. convex C. reflecting

26. If you need a mirror that will produce a virtual, upright image the same size as the object reflected, you should get a

A. plane mirror. B. concave mirror. C. convex mirror.

27. Seismic waves can be either longitudinal or transverse waves. A. True B. False

28. The warmth that you feel from a fire is thermal energy transmitted to you by which type of electromagnetic waves?

A. ultraviolet waves B. infrared waves C. microwaves

29. Why do ultrasound devices have many uses in medicine?

A. Ultrasound treatment can cause the buildup of some small deposits such as kidney stones and gallstones.

B. Ultrasound techniques use high frequency sound wavesabove 20,000 Hz that are sent toward internal soft tissues such as the pancreas, gallbladder, or kidneys, where they are reflected back to a detector which can show the detail of soft tissue.

C. Ultrasound energy is reflected by hard tissues such as bone and produces good images of those types of tissues.

30. All light is made of waves. Which of the following is true about light waves? A. Wavelength is inversely related to amplitude.

B. Wavelength is inversely related to frequency. C. Wavelength is the same as period.

31. The speed of light in space is slower than the speed of electromagnetic waves in space.

A. True B. False

32. How does a radio work?

A. Radios use one signal to send to a receiver station which then uses the same signal to relay the communication.

B. Carrier waves cause the electrons in an antenna to vibrate, which causes a changing electric field that is amplified and sent to the speaker apparatus, producing sound.

C. The electrical signal from a radio station is used to create radio waves that are transmitted to and from microwave towers.

33. When you detect sound passing through the air, which type of wave causes you to hear the sound?

A. longitudinal B. transverse C. longitudinal and transverse

34. Because they transmit, but also scatter light, images seem blurry when seen through transparent materials.

A. True B. False

35. Since we can hear sounds from around the corner when in a hallway, we know that sound waves can move around objects and through doorways. What property of waves allows this?

A. reflection B. refraction C. diffraction

36. Farsightedness is a condition where A. light entering your eye is focused in front of your retina. B. the light entering your eye could be focused better using a concave lens. C. the light rays entering your eye do not converge enough to form a sharp image on your retina.

37. When white light passes through a prism, what causes the visible rainbow of colors to appear?

A. reflection B. refraction C. diffraction

38. Which is the lowest point in a transverse wave? A. crest

B. trough C. compression

39. Which of the following electromagnetic waves has the lowest frequency? A. visible light

B. X-rays C. microwaves

40. When a transverse wave travels through a medium A. the particles in the medium move parallel to the direction the wave travels. B. the particles in the medium move at right angles to the direction that the

wave travels. C. the particles in the medium move in circles.

41. Total internal reflection is used to A. transmit light in optical fibers.

B. diffuse light. C. polarize light in sunglasses.

42. Musicians use the concept of resonance in sound waves. What is resonance?

A. Resonance is the vibration of waves that take place when the angle of incidence matches the angle of reflection.

B. Resonance takes place when an object vibrates by absorbing energy at its natural frequencies.

C. Destructive interference causes resonance.

43. Light enters your eye through a transparent covering called the lens. A. True

B. False

44. A refracting telescope uses A. both mirrors and lenses to collect and focus light from distant objects. B. only mirrors to collect and focus light from distant objects. C. only lenses to collect and focus light from distant objects.

45. You are able to detect bright colors and detailed shapes because A. The cone cells in your retinas absorb red, blue and green light.

B. The rod cells found in your stimulate the optic nerve. C. The rod cells in your retinas absorb red, blue and green light.

46. The color magenta is one of the three primary pigment colors. A. True

B. False

47. Convex mirrors form images that are larger than the actual object. A. True

B. False

48. Which color is produced when the three primary color pigments are mixed together properly?

A. black B. brown C. white

49. Some uses for infrared waves include microwaves, sonar, cell phones, and television remote control devices.

A. True B. False

50. A CONCAVE lens has the same properties as a CONCAVE mirror. A. True

B. False