High-energy electrons collide against a metal surface to produce what kind ofelectromagnetic radiation?A. visible lightB. gamma raysC. shortwavesD. X-rays9. What form of electromagnetic radiation can most effectively penetrate humantissue?A. visible lightB. microwavesC. UV lightD. X-rays10. Which form of electromagnetic radiation is most destructive to chemical bonds inliving tissue?A. gamma raysB. UV raysC. visible lightD. X-rays11. Decide whether each statement is true (T) or false (F). Place your answer in the blank spacegiven.a. Cosmic rays are part of the electromagnetic spectrum.b. Electromagnetic radiation is a beam of tiny particles with some mass movingat a high speed through space.c. Orange light is a type of electromagnetic radiation.d. UVC is a form of ionizing radiation.e. Visible light is a form of ionizing radiation.f. Infrared light has a greater wavelength than does red light.½½½½½½
Question
High-energy electrons collide against a metal surface to produce what kind ofelectromagnetic radiation?A. visible lightB. gamma raysC. shortwavesD. X-rays9. What form of electromagnetic radiation can most effectively penetrate humantissue?A. visible lightB. microwavesC. UV lightD. X-rays10. Which form of electromagnetic radiation is most destructive to chemical bonds inliving tissue?A. gamma raysB. UV raysC. visible lightD. X-rays11. Decide whether each statement is true (T) or false (F). Place your answer in the blank spacegiven.a. Cosmic rays are part of the electromagnetic spectrum.b. Electromagnetic radiation is a beam of tiny particles with some mass movingat a high speed through space.c. Orange light is a type of electromagnetic radiation.d. UVC is a form of ionizing radiation.e. Visible light is a form of ionizing radiation.f. Infrared light has a greater wavelength than does red light.½½½½½½
Solution
High-energy electrons colliding against a metal surface produce X-rays (D).
The form of electromagnetic radiation that can most effectively penetrate human tissue is X-rays (D).
The form of electromagnetic radiation that is most destructive to chemical bonds in living tissue is gamma rays (A).
Now, for the true or false statements:
a. False. Cosmic rays are not part of the electromagnetic spectrum. They are high-energy particles, not electromagnetic waves.
b. False. Electromagnetic radiation is not a beam of tiny particles with mass. It consists of massless particles called photons.
c. True. Orange light is a type of electromagnetic radiation. It falls within the visible light spectrum.
d. True. UVC is a form of ionizing radiation. It has enough energy to remove tightly bound electrons from atoms, thus ionizing them.
e. False. Visible light is not a form of ionizing radiation. It does not have enough energy to ionize atoms or molecules.
f. True. Infrared light has a greater wavelength than red light. The wavelength of infrared light is longer than that of visible light, and red light has the longest wavelength among all visible light colors.
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