What is one way that RF energy can affect human body tissue?
The correct answer is A: It heats body tissue. One way that RF energy can affect human body tissue is that it heats body tissue. RF energy is absorbed by body tissue and converted to heat, which is the primary biological effect. For amateur radio operators, this is why RF exposure limits are important. Understanding this helps ensure safe operation.
Exam Tip
RF energy effect on body = heats body tissue. Think 'R'F 'E'nergy = 'R'aises 'E'levated temperature (heats). RF energy is absorbed by body tissue and converted to heat. Not radiation poisoning, not blood count, not cooling - just heats tissue.
Memory Aid
"RF energy effect on body = heats body tissue. Think 'R'F 'E'nergy = 'H'eats. RF energy is absorbed by body tissue and converted to heat. Primary biological effect of RF exposure."
Real-World Application
RF energy exposure: When RF energy is absorbed by body tissue, it's converted to heat - similar to how a microwave oven heats food. This heating effect is the primary biological effect of RF exposure. This is why RF exposure limits (MPE - Maximum Permissible Exposure) are important - to prevent excessive heating. RF energy heats body tissue.
FCC Part 97.13Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. RF energy doesn't cause radiation poisoning - that's from ionizing radiation (X-rays, gamma rays), not RF. RF is non-ionizing. Radiation poisoning is wrong.
Option C: Incorrect. RF energy doesn't cause blood count to reach dangerously low level - that's not a known RF effect. Blood count isn't affected.
Option D: Incorrect. RF energy doesn't cool body tissue - it heats it. Cooling is wrong.
题目解析
The correct answer is A: It heats body tissue. One way that RF energy can affect human body tissue is that it heats body tissue. RF energy is absorbed by body tissue and converted to heat, which is the primary biological effect. For amateur radio operators, this is why RF exposure limits are important. Understanding this helps ensure safe operation.
考试技巧
RF energy effect on body = heats body tissue. Think 'R'F 'E'nergy = 'R'aises 'E'levated temperature (heats). RF energy is absorbed by body tissue and converted to heat. Not radiation poisoning, not blood count, not cooling - just heats tissue.
记忆口诀
RF energy effect on body = heats body tissue. Think 'R'F 'E'nergy = 'H'eats. RF energy is absorbed by body tissue and converted to heat. Primary biological effect of RF exposure.
实际应用示例
RF energy exposure: When RF energy is absorbed by body tissue, it's converted to heat - similar to how a microwave oven heats food. This heating effect is the primary biological effect of RF exposure. This is why RF exposure limits (MPE - Maximum Permissible Exposure) are important - to prevent excessive heating. RF energy heats body tissue.
错误选项分析
Option B: Incorrect. RF energy doesn't cause radiation poisoning - that's from ionizing radiation (X-rays, gamma rays), not RF. RF is non-ionizing. Radiation poisoning is wrong. Option C: Incorrect. RF energy doesn't cause blood count to reach dangerously low level - that's not a known RF effect. Blood count isn't affected. Option D: Incorrect. RF energy doesn't cool body tissue - it heats it. Cooling is wrong.
知识点
RF energy, Human body tissue, Heats body tissue, Biological effects
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.