#8 - Hot springs and fountains 温泉和喷泉

1.There are natural hot baths and showers all over the world.
You might think water outdoors is cold, but in some places, water meets hot rock under the ground and gets heated up. It sometimes even boils. The hot water can then make a lake or spring - or even shoot out of the ground like a fountain, forming a geyser.

2.Besides geysers, the Earth's hot water can form amazing thermal (hot) springs and pools.
They often occur in places where there are lots of volcanoes, such as New Zealand and Japan. Some thermal pools are famous for their beautiful colors. These are caused by millions of bacteria (tiny living things) that live in the very hot water.

V The Prismatic Spring is the largest hot-water spring in the United States. Its amazing color is due to bacteria that grow around the edge of the mineral-rich water. V

V A mudpot, like this one in Myvatn Geothermal Area in Iceland, is a pool of hot, bubbling mud. Some mudpots are boiling hot. Others bubble as hot gases burst up through them. V

3.You shouldn't stand too close to a geyser - even if nothing's happening!
A geyser is a hole in the ground that suddenly shoots out hot water and steam. Under the hole, there is a water-filled chamber. The Hot rock beneath it heats the water until it rises back to the surface and erupts in a giant jet of water and steam.

4.Old Faithful is one of the world's most famous geysers.
Found in Yellowstone National Park USA, it gets its name because it erupts on average once every 94 minutes. Its jet of steam and water can reach 55 meters high - as high as a 15-story building.

V Strokkur (Icelandic for 'churn') is a geyser in Iceland. It erupts regularly, every 5-10 minutes, and can shoot water up to 25 meters in the air. V

5.Soap helps geysers to erupt.
People discovered this when they tried to use hot water pools and geysers to wash their clothes in. Soap disturbs the cold water in the chamber, helping the hot water to burst through.

V When rainwater seeps into the earth, it can be heated by hot rocks underground before rising back up to the surface as hot springs, pools, and geysers. V

世界各地都有自然的热水浴和淋浴。
你可能会认为户外的水很冷，但在某些地方，水会遇到地下的热石，并被加热。有时甚至沸腾。热水然后可以做一个湖或春天 - 甚至像喷泉一样射出地面，形成一个喷泉。

除了间歇泉，地球的热水可以形成惊人的热（热）弹簧和游泳池。
它们经常发生在有很多火山的地方，如新西兰和日本。一些热水池因其美丽的色彩而闻名。这些是由数百万生活在非常热水中的细菌（微小的生物）造成的。

V棱镜春天是美国最大的热水泉。它的惊人的颜色是由于富含矿物质的水边缘周围生长的细菌。 V

V像冰岛的Myvatn Geothermal Area这样的一个泥盆，是一个热的，冒泡的泥浆池。一些泥坑沸腾。其他泡沫，因为热气体通过它们爆发。 V

你不应该太靠近一个喷泉 - 即使没有发生任何事情！
一个间歇泉是在地面上的一个洞，突然出射热水和蒸汽。在洞下，有一个充满水的房间。它下面的热石头加热水，直到它回到表面，并在巨大的水和蒸汽喷射。

4.忠实是世界上最着名的间歇泉之一。
在美国黄石国家公园发现，它的名字是因为平均每94分钟爆发一次。它的喷水和水可以达到55米高 - 高达一个15层的建筑。

V Strokkur（冰岛语为'churn'）是冰岛的间歇泉。它每隔5-10分钟定期爆发，可以在空气中喷射高达25米的水。 V

松开帮助喷泉喷发。
当人们试图用热水池和喷泉洗衣服时，人们就发现了这一点。肥皂会扰乱房间里的冷水，帮助热水爆裂。

V当雨水渗入地球时，可以用地下热岩加热，然后升温回到地面，如温泉，游泳池和间歇泉。 V