返回

十万个为什么·科学阅读30篇(8)

27 / 30
已读 0 / 30 课
Why Do Deserts Get Very Cold at Night?

Why Do Deserts Get Very Cold at Night?

为什么沙漠夜晚会变得非常冷?

  1. Deserts have very little moisture in the air and soil.
  2. Water vapor usually traps heat near Earth’s surface at night.
  3. Without that blanket, desert heat escapes quickly into space.
  4. Sand and rock also cool down fast after losing sunlight.
  5. Daytime temperatures may reach 40°C, but nighttime can drop below 0°C.
  6. This big change is called a large diurnal temperature range.
  7. Animals like kangaroo rats stay in burrows to avoid the cold.
  8. Scientists use satellite data to map desert cooling patterns worldwide.
上一页
/ 30
下一页