1 Bubble and hiss
In some places on Earth, a bubbling pool of super-hot water erupts out of the ground. Here’s how…
2 Shooting up higher…
Deep under the ground, water that has trickled down from the surface is heated by hot, melted rock.
3 … and higher!
As the water heats, it begins to bubble, and is forced back upwards towards a narrow crack in the surface.
4 Highest!
Eventually, hot water and steam burst out of the crack, shooting straight up. The geyser has erupted!…