闪电的电是怎么在云里分出来正负两极的？
How does lightning's positive and negative charge separate inside a cloud?
云内冰晶和霰粒（软雹）碰撞时，较轻的冰晶带上正电被上升气流带到云顶，较重的霰粒带负电沉到云底，形成上下电场，积累到足够强就放电成闪电。
Inside clouds, collisions between ice crystals and graupel (soft hail) separate charge: lighter crystals gain positive charge and rise to the top, heavier graupel gains negative and sinks, building a field that discharges as lightning.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
周淑贞 束炯,《气象学与气候学》第3版,高等教育出版社,1997
Zhou Shuzhen and Shu Jiong, Meteorology and Climatology, 3rd ed., Higher Education Press, 1997
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040060164（豆瓣书目条目: 气象学与气候学）
#电荷分离 #闪电
一场雷暴要“点火”，一般得凑齐哪三样条件？
What three ingredients does a thunderstorm generally need to ignite?
要够潮湿的空气、够不稳定的大气（下面热上面冷，容易上冲），以及能把空气抬起来触发对流的力量（如地形或锋面），三者齐了就容易打雷下雨。
It needs moist air, an unstable atmosphere (warm below, cold above, so air rushes up), and a lift to trigger convection (like terrain or a front); with all three, thunderstorms form.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
卢特根斯、塔巴克《大气：科学导论》，Pearson，2011
Lutgens, F.K. & Tarbuck, E.J., The Atmosphere: An Introduction to Meteorology, Pearson, 2011
独立核验依据 · Independent verification: 核验依据 1 ARCHIVE 标识 isbn_2900131015677：The atmosphere : an introd
#雷暴 #对流条件
先看见闪电还是先听见雷，为什么？
Do we see lightning or hear thunder first, and why?
先看到光。因为光跑得比声音快得多，闪电和打雷其实同时发生，但光瞬间到达，声音要过一会儿才传来。
We see light first. Light travels far faster than sound; the flash and the boom happen together, but light arrives instantly while sound takes a moment.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
卢特根斯、塔巴克《大气：科学导论》，Pearson，2011
Lutgens, F.K. & Tarbuck, E.J., The Atmosphere: An Introduction to Meteorology, Pearson, 2011
独立核验依据 · Independent verification: 核验依据 1 ARCHIVE 标识 isbn_2900131015677：The atmosphere : an introd
#闪电 #光速