真题精讲
（2026·福建福州连江期末）Where does the wind come from? What makes the wind move all the time? Many of us feel the wind every day, but few know the simple science behind it. Scientists say that the sun is the real “driver” of the wind.
Scientists tell us that the sun makes it move and blow(吹). When the sun shines(照耀), it makes the earth and the water hot. Then the earth and water make the air hot. The warm air is light, so it goes up. The cool air moves in to take the place of(取代) the warm air. Warm and cool air move from place to place and that makes winds.
When the wind changes speed(速度), it often brings a change in the weather. When the air moves slowly, it makes light winds. But when the air moves very fast, it makes big winds. It can also tell us a lot about what the weather will be like. Air over the earth is dry and that over the water is wet. Winds from the earth or the water bring different kinds of weather. Some winds bring sunny or dry weather and others bring rainy or wet weather.
So next time if you feel the wind on your face, you'll know it's all thanks to the sun and the movement of warm and cool air!
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答案：C
（2026·福建福州连江期末）Where does the wind come from? What makes the wind move all the time? Many of us feel the wind every day, but few know the simple science behind it. Scientists say that the sun is the real “driver” of the wind.
Scientists tell us that the sun makes it move and blow(吹). When the sun shines(照耀), it makes the earth and the water hot. Then the earth and water make the air hot. The warm air is light, so it goes up. The cool air moves in to take the place of(取代) the warm air. Warm and cool air move from place to place and that makes winds.
When the wind changes speed(速度), it often brings a change in the weather. When the air moves slowly, it makes light winds. But when the air moves very fast, it makes big winds. It can also tell us a lot about what the weather will be like. Air over the earth is dry and that over the water is wet. Winds from the earth or the water bring different kinds of weather. Some winds bring sunny or dry weather and others bring rainy or wet weather.
So next time if you feel the wind on your face, you'll know it's all thanks to the sun and the movement of warm and cool air!
(
C
)57. According to Paragraph 2, which picture best tells the movements of warm air and cool air?答案：C
答案：57. C
解析：
【分析】
要解决这道题，需先明确风的形成原理：暖空气密度小、重量轻，会向上运动；冷空气密度大、重量重，会向下运动，冷空气会补充暖空气上升后留下的空间，形成空气循环。再逐一分析选项中暖、冷空气的运动方向是否符合该原理。
【解析】
根据第二段内容，暖空气（warm air）轻，向上运动；冷空气（cool air）重，向下运动，二者形成循环。
选项A：暖、冷空气均向上运动，不符合原理，错误；
选项B：暖、冷空气均向下运动，不符合原理，错误；
选项C：暖空气（左侧）箭头向上（上升），冷空气（右侧）箭头向下（下沉），形成正确循环，符合原理，正确；
选项D：冷空气向上、暖空气向下，运动方向颠倒，错误。
【答案】
C
【知识点】
空气对流、风的形成
【点评】
本题结合风的形成原理，考查对暖、冷空气运动方向的理解，属于基础常识题，需准确掌握空气密度与运动方向的关系。
【难度系数】
0.3
要解决这道题，需先明确风的形成原理：暖空气密度小、重量轻，会向上运动；冷空气密度大、重量重，会向下运动，冷空气会补充暖空气上升后留下的空间，形成空气循环。再逐一分析选项中暖、冷空气的运动方向是否符合该原理。
【解析】
根据第二段内容，暖空气（warm air）轻，向上运动；冷空气（cool air）重，向下运动，二者形成循环。
选项A：暖、冷空气均向上运动，不符合原理，错误；
选项B：暖、冷空气均向下运动，不符合原理，错误；
选项C：暖空气（左侧）箭头向上（上升），冷空气（右侧）箭头向下（下沉），形成正确循环，符合原理，正确；
选项D：冷空气向上、暖空气向下，运动方向颠倒，错误。
【答案】
C
【知识点】
空气对流、风的形成
【点评】
本题结合风的形成原理，考查对暖、冷空气运动方向的理解，属于基础常识题，需准确掌握空气密度与运动方向的关系。
【难度系数】
0.3