3540990
| Question | Answer |
| THE CRUST | Outer part of the earth, up to 60 km under the continents but only 10 km deep under the ocean |
| THE MANTLE | Layer of hot, soft rock called magma between the crust and the core |
| THE CORE | Inner layer of the earth, made of nickel and iron, 5,000nCº. This heat causes the magma in the mantle to move upwards |
| DESTRUCTIVE BOUNDARIE | When two plates collide, destroying land. Eg. American and Nazca plates |
| CONSTRUCTIVE BOUNDARIE | When two plates move away from eachother, constructing land. Eg,African and American plates |
| PANGAEA | Large landmass that existed at the beginning, gradually it started pulling apart due to continental drift |
| MID-OCEAN RIDGE | Where plates separate, molten magma rises from the mantle and fills the gap, it colds and solidifies forming a new ocean floor |
| VENT | A hole in the crust through which the magma erupts in a volcano |
| MAGMA RESERVOIR | Chamber inside the crust where magma is stored before a volcanic eruption |
| CRATER | Hole at the top of the volcano from where lava, ash, steam, rocks and boiling mud are fired into the atmosphere during an eruption |
| LAVA | Name given to magma when it reaches the surface |
| THE PACIFIC RING OF FIRE | A zone of heavy volcanic activity that encircles the Pacific ocean |
| ACTIVE VOLCANO | A state on the volcano's life where it's still erupting at regular intervals Eg, Mount Etna, Mount Vesuvius |
| DORMANT VOLCANO | A state in a volcano's life where it has been quiet for hundreds of years but may erupt again Eg, Mount St. Helens |
| EXTINCT VOLCANO | A state in a volcano's life where it has not erupted in recorded history Eg, Slemish mountain in Co. Antrim |
Want to create your own Flashcards for free with GoConqr? Learn more.