1) How do the electromagnetic waves are arranged from radio wave to gamma ray in terms of wavelength? a) Increasing Wavelength b) Decreasing Wavelength c) From constant to infinite wavelength d) From infinite to constant wavelength 2) Given a chance to arrange infrared waves, ,microwave, UV rays, and visible lights with an increasing amount of energy, how should it be? a) microwave, infrared wave, visible lights, UV rays b) visible lights, UV rays, infrared waves, microwave c) microwave, UV rays, infrared waves, visible lights d) infrared waves, microwave, UV rays, visible lights 3) Which of the following electromagnetic waves are non-ionizing and do not harm the human body? a) gamma rays, microwaves, UV rays, X-rays b) gamma rays, microwaves, radio waves, X-rays c) infrared wave, gamma rays, microwaves, UV rays d) infrared wave, microwaves, radio waves, visible light 4) In which situation does electromagnetic radiation positively affects the environment or human being? a) A cell tower near rice fields. b) High energy microwave radiation cause thermal effects. c) Ionizing radiations may alter the DNA pattern of organisms. d) UV rays can be used constructively in eradicating bacteria, viruses & fungi. 5) A storekeeper received a 1000 bill of Philippine money from a client and wants to make sure it is not fake. Which of the following devices should he use? a) solar lamp b) LASER diodes c) white-light flashlight d) UV counterfeit money detector 6) What do you call a form of radiation with less energy and does not remove electrons from atom? a) Ionizing Radiation b) Gamma Radiation c) Ultraviolet Radiation d) Non-Ionizing Radiation 7) What type of Ultraviolet Radiation that is completely absorb by the atmosphere? a) UV-A rays b) UV-B rays c) UV-C rays d) UV-D rays 8) What type of Electromagnetic Spectrum cannot be seen but feel by human in a form of heat? a) Infrared b) Radio Waves c) Microwaves d) Visible Light 9) What is the relationship of wavelength and frequency? a) constant b) directly proportional c) inversely proportional d) none of the above 10) What is the value of speed of light (c)? a) 3.0 x 10^ 8 m/s b) 3.0 x 10^ -8 m/s c) 3.0 x 10^9 m/s d) 3.0 x 10^-9 m/s

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