十万个为什么·科学阅读30篇（1）

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科学常识延展阅读·自动延展（批次0001-020）

Auroras glow when charged solar particles collide with gases high in Earth’s atmosphere.
Oxygen atoms at very high altitudes emit rare red light, while lower ones produce green—the most common color.
Nitrogen molecules contribute blue or purplish hues, especially during intense geomagnetic storms.
The altitude of collisions determines which gases get excited and what color we see from the ground.
Solar wind speed and magnetic field orientation influence both aurora brightness and color variety.
Cameras with long exposures often capture colors invisible to the naked eye in low-light conditions.
Different planets show unique auroral colors based on their atmospheric composition—like Saturn’s ultraviolet glow.
Scientists use spectrometers to analyze aurora light and learn about upper-atmosphere chemistry.
Magnetic latitude matters too: people near the Arctic Circle see more vivid displays than those farther south.
Studying auroras helps us understand space weather effects on satellites and power grids.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

Nitrogen molecules contribute blue or purplish hues, especially during intense geomagnetic storms. 氮分子则呈现蓝色或紫红色，尤其在强烈的地磁暴期间。
Scientists use spectrometers to analyze aurora light and learn about upper-atmosphere chemistry. 科学家利用光谱仪分析极光，以研究高层大气化学。
Auroras glow when charged solar particles collide with gases high in Earth’s atmosphere. 极光产生于带电太阳粒子与地球高层大气中的气体碰撞时。

这篇中文题目最接近哪一句？科学常识延展阅读·自动延展（批次0001-020）一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？极光产生于带电太阳粒子与地球高层大气中的气体碰撞时。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） What Causes the Different Colors in Aurora Borealis and Australis? How to cook noodles A maths worksheet

Nitrogen molecules contribute blue or purplish hues, especially during intense geomagnetic storms.

Nitrogen molecules contribute blue or purplish hues, especially during intense geomagnetic storms.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Nitrogen molecules contribute blue or purplish hues, especially during intense geomagnetic storms.