Solar Radiation and Earth's Seasons · 太阳辐射与地球的季节
| English | 中文 | Pinyin · 拼音 |
|---|---|---|
| solar radiation/ˈsəʊlə ˌreɪdɪˈeɪʃn/ | 太阳辐射 | tài yáng fú shè |
Why the year has seasons
- Summer is warm, winter is cold — but why?
- It is not because Earth moves closer to the Sun.
- The real reason is that Earth is tilted.
- That tilt changes how sunlight strikes each hemisphere through the year.
一年为什么有季节
- 夏天暖,冬天冷——但为什么?
- 不是因为地球移动得离太阳更近。
- 真正的原因是地球是倾斜的。
- 那个倾斜改变了阳光全年如何照射每个半球。
A tilted planet
- Solar radiation 太阳辐射 is the energy Earth receives from the Sun.
- Earth's axis is tilted about 23.5 degrees as it orbits.
- The axis keeps pointing the same way all year.
- So different parts of Earth face the Sun most directly at different times.
一颗倾斜的行星
- 太阳辐射(solar radiation)是地球从太阳接收的能量。
- 地球的轴在运行时倾斜约 23.5 度。
- 轴全年保持指向相同的方向。
- 所以地球不同的部分在不同的时间最直接地面对太阳。
What causes Earth's seasons? · 什么造成地球的季节?
The tilt of Earth's axis, not its distance from the Sun, causes the seasons. · 是地球轴的倾斜、而不是它离太阳的距离,造成季节。
Direct rays mean summer
- When a hemisphere tilts toward the Sun, sunlight hits it directly.
- Direct rays are concentrated and the days are long — this is summer.
- When it tilts away, sunlight arrives at a slant and days are short — winter.
- The angle of the Sun's rays, not the distance, sets the season.
直射光意味着夏季
- 当一个半球朝太阳倾斜时,阳光直接照射它。
- 直射光是集中的,白天长——这是夏季。
- 当它朝相反方向倾斜远离时,阳光斜射到达,白天短——冬季。
- 是太阳光线的角度、而不是距离,设定季节。
Why we have seasons · 我们为什么有季节
Step through Earth's tilt and orbit - the tilt, not the distance, gives us the seasons. · 一步步走过地球的倾斜和轨道——是倾斜、而不是距离,给了我们季节。
It is summer in a hemisphere when that hemisphere… · 一个半球是夏季,是当那个半球……
A hemisphere tilted toward the Sun gets direct, concentrated rays and long days — summer. · 朝太阳倾斜的半球得到直射、集中的光和长白天——夏季。
Earth's axis is tilted at about ____ point five degrees. · 地球的轴倾斜约____点五度。
Earth's axial tilt is about 23.5 degrees, and it stays pointed the same way all year. · 地球的地轴倾斜约 23.5 度,而且它全年指向相同的方向。
Opposite hemispheres
- The two hemispheres always tilt opposite ways.
- So when the north has summer, the south has winter, and vice versa.
- Twice a year, at the equinoxes, both get equal day and night.
- The cycle repeats every year as Earth completes its orbit.
相反的半球
- 两个半球总是朝相反的方向倾斜。
- 所以当北方是夏季时,南方是冬季,反之亦然。
- 一年两次,在分点,两者都得到相等的白天和黑夜。
- 随着地球完成它的轨道,这个循环每年重复。
When it is summer in the north, it is winter in the south. · 当北方是夏季时,南方是冬季。
The two hemispheres tilt opposite ways, so they always have opposite seasons. · 两个半球朝相反的方向倾斜,所以它们总是有相反的季节。
Select all · 所有 true statements about seasons. · 选出关于季节的所有正确说法。
Distance barely changes; the tilt causes the seasons. The other three are correct. · 距离几乎不变;是倾斜造成季节。其余三条正确。
Seasons are not caused by Earth's distance from the Sun. Earth is actually slightly closer to the Sun during northern winter. It is the tilt that matters: a hemisphere tilted toward the Sun gets direct rays and summer, no matter the tiny change in distance.
季节不是由地球离太阳的距离造成的。地球实际上在北半球冬季时离太阳稍近。重要的是倾斜:朝太阳倾斜的半球得到直射光和夏季,无论距离那微小的变化。
June around the world:
- In June the northern hemisphere tilts toward the Sun — direct rays, long days, summer.
- At the same moment the southern hemisphere tilts away — slanted rays, short days, winter.
- Same Sun, same distance, opposite seasons — all because of the tilt.
世界各地的六月:
- 六月北半球朝太阳倾斜——直射光、长白天、夏季。
- 同一时刻南半球朝相反方向倾斜——斜射光、短白天、冬季。
- 同样的太阳、同样的距离、相反的季节——全都因为倾斜。
Earth's seasons are caused by its 23.5-degree tilt, not its distance from the Sun. A hemisphere tilted toward the Sun receives direct solar radiation and long days (summer); tilted away, it gets slanted rays and short days (winter). The two hemispheres always have opposite seasons.
地球的季节由它 23.5 度的倾斜造成,而不是它离太阳的距离。朝太阳倾斜的半球接收直射的太阳辐射和长白天(夏季);朝相反方向倾斜,它得到斜射光和短白天(冬季)。两个半球总是有相反的季节。