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30 questions
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  • Q1

    Which electromagnetic wave has the highest energy?

    Gamma rays

    Radio wave

    Ultra violetwave

     Visible light

    45s
  • Q2

    What happens to the frequency and wavelength if the energy of the wave decreases?

    wavelength decreases, frequency increases

     

    wavelength increases, frequency decreases

    wavelength decreases, frequency decreases

    wavelength increases, frequency increases

    45s
  • Q3

    Radio waves, X-ray waves, and microwaves are detected to betravelling in a vacuum. If the waves have a wavelength of 2 x 103 m, 2 x 10-9m, 2 x 10-1 m respectively, which of the three travels the fastest?

    X-ray waves

    They all travel at the same speed.

    radio waves

    microwaves

    45s
  • Q4

    An FM radio station broadcasts at 9.05 MHz (9.05 x 107 Hz).The radio wave travels at the speed of light, what is its wavelength?

    2.72 x 1016 m

    3.31m

     0.04m

    2.72 x1010 m

    45s
  • Q5

    A gamma ray with a frequency of 6.2 x 1019Hz is fired on an unknown object in space. The value of Planck’s constant is 6.626 x 10-34Js. How much energy does the wave carry?

    4.11x 10-14 J

    4.11x 10-14 J·s

    4.11x 1014 J·s

    4.11x 1014 J

    45s
  • Q6

    What will happen if the antenna of the analog television is placed inside the house?

    Pictures are clear, but the sound is intermittent due to its enclosed location

    Pictures are blurred, but the sound is good due to the transmitter’s location

    Pictures and sound transmitted are strong due to its enclosed location.

    Pictures and sound transmitted are weak due to the location of the transmitter

    45s
  • Q7

    Which is NOT included in the group for radio communication?

    Amplifier

    Oscillator

    Antennas

    WIFI Router

    30s
  • Q8

    Which causes sugar, water, and fat to vibrate at extremely high frequencies?

    Kinetic energy

    Radiation energy

    Cavity magnetron

    Microwave energy

    30s
  • Q9

    Which item must NOT be placed inside the microwave oven?

    Foil

    Styrofoam

    Pyrex cup

    Hard-boiled eggs

    30s
  • Q10

    Which is the center of transmitting and receiving radio waves towards television and radio communication?

    Wires

    Speakers

    LCD’s

    Base Station Antenna

    30s
  • Q11

    What form of electromagnetic radiation has the most energy?

    Gamma-rays

    Radio waves

    Microwaves

    Radio waves

    30s
  • Q12

    Which is NOT a probable result of the human tissue’s exposure to ionizing radiation?

    Death

    Cellular damage

    Cancer

    Viral infection

    30s
  • Q13

    What does ionizing radiation remove from atoms?

    Neutrons

    Protons

     Nucleus

    Electrons

    30s
  • Q14

    What is the difference between ionizing and non-ionizing radiation?

    Ionizing radiation is a naturally occurring phenomenon and non-ionizing radiation is only created artificially.

    Non-ionizing radiation is a naturally occurring phenomenon and ionizing radiation is only created artificially.

    Ionizing radiation has high energy that can remove an electron from the atom, but non-ionizing does not.

    Non-ionizing radiation is high energy radiation, but ionizing radiation is low energy radiation.

    60s
  • Q15

    How can we protect ourselves from harmful electromagnetic radiation?

    Spend time outdoors

    Limit sun exposure

    Put your wireless smartphone near

    Increase cell phone use

    45s

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