自然科学启蒙 / Let's-Read-and-Find-Out Science - 4: 你四周都是空气
- 33 pages
- 2 hours of reading
Introduces the concept of air, its presence in our world, and its importance to the environment.




Introduces the concept of air, its presence in our world, and its importance to the environment.
Describes snow's physical qualities and how quantities of it can be fun as well as dangerous.
The sun shines down on us, giving warmth and light. But did you know that the sun also makes the seasons? As the earth makes one complete rotation around the sun every year, the seasons on the earth change -- from winter to spring to summer to fall and back to winter again. Find out how the light from the sun affects life on the earth for all living things in this look at the only star in our solar system.
Explains how the water cycle leads to different types of weather patterns.