X-ray technicians wear protective gear to keep them safe from the X-rays. Why are X-rays dangerous?(1 point)
Responses
They have long wavelengths that can penetrate materials, and their low energy can damage matter.
They have long wavelengths that can penetrate materials, and their low energy can damage matter. - no response given
They have short wavelengths that can penetrate materials, and their high energy can damage matter.
They have short wavelengths that can penetrate materials, and their high energy can damage matter. - correct
They have long wavelengths that can penetrate materials, and their high energy can damage matter.
They have long wavelengths that can penetrate materials, and their high energy can damage matter. - no response given
They have short wavelengths that can penetrate materials, and their low energy can damage matter.
Frequency is measured in hertz. Which option best describes hertz?(1 point)
Responses
the length of a wave over a specified length of time
the length of a wave over a specified length of time
the number of vibrations produced per minute
the number of vibrations produced per minute
the number of waves that pass a certain point within a certain time
the number of waves that pass a certain point within a certain time
the distance that one cycle of a wave will travel
the number of waves that pass a certain point within a certain time
Use the information about four different waves to answer the question.
Wave # Frequency Wavelength
Wave 1 6.66 × 1014 Hz 450 nm
Wave 2 5.77 × 1014 Hz 520 nm
Wave 3 4.61 × 1014 Hz 650 nm
Wave 4 4.28 × 1014 Hz 700 nm
Which wave contains the lowest energy?
(1 point)
Responses
wave 2
wave 2
wave 3
wave 3
wave 1
wave 1
wave 4
Wave 4
Lightning contains gamma rays. Based on the position of gamma rays in the electromagnetic spectrum, does lightning have more or less energy than a radio?
(1 point)
Responses
Lightning has more energy than the radio because gamma rays have a shorter wavelength.
Lightning has more energy than the radio because gamma rays have a shorter wavelength.
Lightning has less energy than the radio because gamma rays have a shorter wavelength.
Lightning has less energy than the radio because gamma rays have a shorter wavelength.
Lightning has less energy than the radio because gamma rays have a longer wavelength.
Lightning has less energy than the radio because gamma rays have a longer wavelength.
Lightning has more energy than the radio because gamma rays have a longer wavelength.
Lightning has more energy than the radio because gamma rays have a shorter wavelength.
Waves have energy that causes particles in matter to vibrate. So, it stands to reason that(1 point)
Responses
the lower the energy, the faster the particles vibrate (which means a lower frequency).
the lower the energy, the faster the particles vibrate (which means a lower frequency).
the lower the energy, the slower the particles vibrate (which means a higher frequency).
the lower the energy, the slower the particles vibrate (which means a higher frequency).
the higher the energy, the faster the particles vibrate (which means a higher frequency).
the higher the energy, the faster the particles vibrate (which means a higher frequency).
the higher the energy, the slower the particles vibrate (which means a lower frequency).