20. C. As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.
21. A. microwaves, infrared, ultraviolet, gamma rays
22. B. The online version, because the downloaded version usually requires better equipment than the online version.
23. B. EM radiation has a well-defined frequency.
24. B. EMR with energy above a certain value can eject electrons out of a metal.
25. B. The double-slit experiment provides evidence that electromagnetic radiation has both wave-like and particle-like properties.
20. Which statement about the effect of temperature on the speed of sound is correct?
A. Changes in temperature have no effect on the speed of sound.
B. As temperature increases, the speed of sound decreases because molecules in the medium collide less frequently.
C. As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.
D. As temperature increases, the speed of sound increases because the medium becomes denser.
21. Which forms of electromagnetic radiation are arranged in order of increasing energy?
A. microwaves, infrared, ultraviolet, gamma rays
B. gamma rays, ultraviolet, microwaves, infrared
C. infrared, gamma rays, microwaves, ultraviolet
D. microwaves, ultraviolet, infrared, gamma rays
22. A student is using a weak computer to design a logo. If the weak computer is the only constraint, should the student use the online version or downloaded version of a graphic design software?
A. The downloaded version, because the online version may have limited bandwidth that limits how quickly the designer can work.
B. The online version, because the downloaded version usually requires better equipment than the online version.
C. The downloaded version, because the online version usually requires better equipment than the downloaded version.
D. The online version, because the downloaded version may have limited bandwidth that limits how quickly the designer can work.
23. A student explains that the behavior of EM radiation is wave-like. Which explanation correctly evaluates the wave-like properties of EM radiation?
A. EM radiation has a well-defined energy value.
B. EM radiation has a well-defined frequency.
C. EM radiation has a well-defined mass.
D. EM radiation has a well-defined location.
24. Which observation is evidence that electromagnetic radiation (EMR) has particle-like properties?
A. Some EMR is blocked when it passes through a polarized lens.
B. EMR with energy above a certain value can eject electrons out of a metal.
C. A diffraction pattern is observed when EMR passes through a narrow slit.
D. EMR refracts as it moves into a different medium.
25. Which statement about the double-slit experiment is true?
A. The double-slit experiment proves that electromagnetic radiation consists of particles.
B. The double-slit experiment provides evidence that electromagnetic radiation has both wave-like and particle-like properties.
C. The double-slit experiment provides evidence that electromagnetic radiation has wave-like properties.
D. The double-slit experiment proves that electromagnetic radiation consists of waves.
1 answer
1 answer