What orientation of Bz (B sub z) increases the likelihood that charged particles from the Sun will cause disturbed conditions?
The correct answer is A: Southward. What orientation of Bz (B sub z) increases the likelihood that charged particles from the Sun will cause disturbed conditions is southward. Southward Bz allows solar particles to interact with Earth's magnetic field. For amateur radio operators, this is important for understanding space weather. Understanding this helps when evaluating propagation conditions.
Exam Tip
Bz orientation for disturbed conditions = southward. Think 'B'z 'S'outhward = 'B'ad 'S'pace weather. Southward Bz allows solar particles to interact with Earth's magnetic field. Not northward, not eastward, not westward - just southward.
Memory Aid
"Bz orientation for disturbed conditions = southward. Think 'B'z 'S'outhward = 'D'isturbed. Southward Bz allows solar particles to interact with Earth's magnetic field. Important for understanding space weather."
Real-World Application
Bz orientation: When Bz is southward, it increases the likelihood that charged particles from the Sun will cause disturbed conditions. Southward Bz allows the interplanetary magnetic field to connect with Earth's magnetic field, allowing particles to enter. This is the orientation - southward Bz increases disturbed conditions.
Key Concepts
Why Other Options Are Wrong
Option B (Northward): Incorrect. Northward Bz doesn't increase disturbed conditions - southward Bz does. Northward is wrong.
Option C (Eastward): Incorrect. Eastward Bz isn't the orientation - southward Bz increases disturbed conditions. Eastward is wrong.
Option D (Westward): Incorrect. Westward Bz isn't the orientation - southward Bz increases disturbed conditions. Westward is wrong.
题目解析
The correct answer is A: Southward. What orientation of Bz (B sub z) increases the likelihood that charged particles from the Sun will cause disturbed conditions is southward. Southward Bz allows solar particles to interact with Earth's magnetic field. For amateur radio operators, this is important for understanding space weather. Understanding this helps when evaluating propagation conditions.
考试技巧
Bz orientation for disturbed conditions = southward. Think 'B'z 'S'outhward = 'B'ad 'S'pace weather. Southward Bz allows solar particles to interact with Earth's magnetic field. Not northward, not eastward, not westward - just southward.
记忆口诀
Bz orientation for disturbed conditions = southward. Think 'B'z 'S'outhward = 'D'isturbed. Southward Bz allows solar particles to interact with Earth's magnetic field. Important for understanding space weather.
实际应用示例
Bz orientation: When Bz is southward, it increases the likelihood that charged particles from the Sun will cause disturbed conditions. Southward Bz allows the interplanetary magnetic field to connect with Earth's magnetic field, allowing particles to enter. This is the orientation - southward Bz increases disturbed conditions.
错误选项分析
Option B (Northward): Incorrect. Northward Bz doesn't increase disturbed conditions - southward Bz does. Northward is wrong. Option C (Eastward): Incorrect. Eastward Bz isn't the orientation - southward Bz increases disturbed conditions. Eastward is wrong. Option D (Westward): Incorrect. Westward Bz isn't the orientation - southward Bz increases disturbed conditions. Westward is wrong.
知识点
Bz orientation, Southward, Charged particles from Sun, Disturbed conditions
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.