When a meteor strikes the Earth’s atmosphere, a linear ionized region is formed at what region of the ionosphere?
The correct answer is A: The E region. When a meteor strikes the Earth's atmosphere, a linear ionized region is formed at what region of the ionosphere is the E region. Meteors create ionization in the E region. For amateur radio operators, this is important for meteor scatter propagation. Understanding this helps when operating meteor scatter.
Exam Tip
Meteor ionization region = E region. Think 'M'eteor 'I'onization = 'E' region. Meteors create ionization in the E region of the ionosphere. Not F1, not F2, not D - just E region.
Memory Aid
"Meteor ionization region = E region. Think 'M'eteor 'I'onization = 'E' region. Meteors create ionization in the E region of the ionosphere. Important for meteor scatter propagation."
Real-World Application
When a meteor strikes the Earth's atmosphere: It creates a linear ionized region in the E region of the ionosphere (approximately 90-120 km altitude). This ionization can reflect radio signals, enabling meteor scatter propagation. This is the region - E region is where meteors create ionization.
Key Concepts
Why Other Options Are Wrong
Option B (F1 region): Incorrect. F1 region isn't where meteors create ionization - E region is where meteors create ionization. F1 region is wrong.
Option C (F2 region): Incorrect. F2 region isn't where meteors create ionization - E region is where meteors create ionization. F2 region is wrong.
Option D (D region): Incorrect. D region isn't where meteors create ionization - E region is where meteors create ionization. D region is wrong.
题目解析
The correct answer is A: The E region. When a meteor strikes the Earth's atmosphere, a linear ionized region is formed at what region of the ionosphere is the E region. Meteors create ionization in the E region. For amateur radio operators, this is important for meteor scatter propagation. Understanding this helps when operating meteor scatter.
考试技巧
Meteor ionization region = E region. Think 'M'eteor 'I'onization = 'E' region. Meteors create ionization in the E region of the ionosphere. Not F1, not F2, not D - just E region.
记忆口诀
Meteor ionization region = E region. Think 'M'eteor 'I'onization = 'E' region. Meteors create ionization in the E region of the ionosphere. Important for meteor scatter propagation.
实际应用示例
When a meteor strikes the Earth's atmosphere: It creates a linear ionized region in the E region of the ionosphere (approximately 90-120 km altitude). This ionization can reflect radio signals, enabling meteor scatter propagation. This is the region - E region is where meteors create ionization.
错误选项分析
Option B (F1 region): Incorrect. F1 region isn't where meteors create ionization - E region is where meteors create ionization. F1 region is wrong. Option C (F2 region): Incorrect. F2 region isn't where meteors create ionization - E region is where meteors create ionization. F2 region is wrong. Option D (D region): Incorrect. D region isn't where meteors create ionization - E region is where meteors create ionization. D region is wrong.
知识点
Meteor, Earth's atmosphere, Linear ionized region, E region
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.