十万个为什么·科学启蒙30篇（1）

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为什么山脉会随着时间越来越高？

Mountains grow taller when tectonic plates push against each other underground.
This slow collision crumples Earth's crust and lifts land upward like folded paper.
Some mountains, like the Himalayas, rise about one centimeter every year on average.
Erosion from wind and rain tries to wear them down at the same time.
But in active zones, uplift often outpaces erosion over long periods.
Scientists measure mountain growth using GPS satellites and precise laser surveys.
Volcanic activity can also add height quickly when magma rises and hardens.
Rock layers deep underground bend and break to accommodate the rising force.
Even though growth is tiny yearly, it adds up over millions of years.
That’s why today’s tallest peaks were once flat seabeds long ago.

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Mountains grow taller when tectonic plates push against each other underground. 当地壳板块在地下相互挤压时，山脉会逐渐增高。
But in active zones, uplift often outpaces erosion over long periods. 但在活跃地带，长期来看抬升速度通常超过侵蚀速度。
Scientists measure mountain growth using GPS satellites and precise laser surveys. 科学家利用GPS卫星和精密激光测量技术监测山体增长。

这篇中文题目最接近哪一句？为什么山脉会随着时间越来越高？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？当地壳板块在地下相互挤压时，山脉会逐渐增高。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） Why Do Mountains Get Taller Over Time? How to cook noodles A maths worksheet

Mountains grow taller when tectonic plates push against each other underground.

Mountains grow taller when tectonic plates push against each other underground.

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：Mountains grow taller when tectonic plates push against each other underground.