| Hint | Answer |
|---|
| The most viscous magma has a high ______ content | |
| Magma that has a silica content of or less than 50% is known as... | |
| ...Between 50% and 70%? | |
| Magma with a silica content of 70% or more is... | |
| The gaseous components of magma are called... | |
| These lava flows resemble rope or braids, and are generally smooth in texture. | |
| Don't step on cooled bits of this lava flow, because it's got sharp, jagged protrusions! | |
| The most common gas in magma is... | |
| Small cones on the side of a volcano are called what? | |
| If said cones only emit smoke or gases, they are called... | |
| | Hint | Answer |
|---|
| Volcanoes that have a domed structure and generally erupt silently are called... | |
| These volcanoes are built up from ejected cinders, and are generally short-lived (as far as volcanoes go). | |
| The most dangerous type of volcano, which can erupt either silently or violently is... | |
| Most of these dangerous volcanoes are located around a region known as... | |
| These deadly pyroclastic flows are made up of hot gases, glowing-hot rocks, and large rock fragments. They can travel up to 125mph (200kph). | |
| When a pyroclastic flow becomes saturated with water and turns into a devastating mudflow, it is termed a... | |
| The most famous instance of the destruction and loss of life that can be caused by a pyroclastic flow is the eruption of Mount... | |
| This volcano's eruption caused lost of destruction, but not many fatalities. It is located in the United States. | |
| The word 'volcano' comes from 'Vulcanus', who was the Roman god of... | |
| Yellowstone National Park is actually located in the caldera of a dormant... | |
|
Periodic Table 
The Nine Planets 
Digits of Pi
