Yellowstone's huge magma chamber underground is a boiling river continually building for a major eruption. Scientists estimate the huge eruption will be so great that it could destroy most of the North American continent.
When a child is doing something dangerous, unsafe (etc.) and could potentially harm himself and others.
Nuclear energy is potentially very dangerous and best reserved for technologically advanced countries.
I think any volcano is potentially dangerous. It was once thought that volcanoes were extinct but now scientist think volcanoes are active or dormant. So any volcanoe could erupt and be dangerous. Some are more likely to than others.
Exercises definitely should have consequences for inadequate performance. These are dangerous actions that could potentially harm others as well as yourself.
The Grand Canyon, Yellowstone, Yosemite and others.
Salt Lake City - Great Salt lake, Idaho Falls, West Yellowstone - Yellowstone, I'm sure there are others.
Generally, yes. Pretty much anything you do with a strong acid is dangerous. It of course matters what you are mixing it with -- some things are somewhat dangerous, others are explosive and will kill you!If you mean mixing a strong acid with water, that can also be quite dangerous, and ACID SHOULD ALWAYS BE ADDED TO WATER, not the other way around.See the Related Questions links to the left for more information.
They are not dangerous by themselves. To be dangerous to anyone, a person has to be invloved.
Potentially violent or suicidal.
They're considered dangerous because they can contaminate others or spread diseases to others.
Everything electrical requires at least some basic knowledge/training so as to not harm yourself or others. Very broad question though......by the way....."dangerous voltage levels" could be any voltage. Its the current level that's makes the specific voltage dangerous.
Risk Behaviors