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Keywords plates
| Term | Definition |
|---|---|
| Inner core | The centre of the earth |
| Crust | The outside layer of the earth |
| Lava | Magma that has reached the outside of the earths surface |
| Convection currents | Currents that move in circular motion in the mantle that help move plates |
| Plates | Pieces of the earths surface that make up the earth (like a puzzle) |
| Plate tectonics | The study of plates |
| Continental plates | Plates with land on top of them |
| Oceanic plates | Plates that have oceans on top of them |
| Plate Boundary | When an oceanic and continental plate meet |
| Eurasian plate | The plate Ireland sits on |
| Pangea | A huge, historic land mass that used to cover the earths surface |
| Divergent plates | Plates that separate/divide |
| Convergent plates | Plates that collide |
| Transform plates | Plates that slide past each other (traffic) |
| Mid Ocean Ridge | An underwater mountain range |
| Volcanic islands | Mountains on the seabed rise up to the surface of the ocean |
| Crater | The opening hole on top of a volcano |
| Magma chamber | Where magma is stored in a volcano |
| Vent | The passage in a volcano that joins the magma chamber and crater |
| Active volcano | A volcano that erupts regularly |
| Dormant volcano | A volcano that hasn’t erupted in a while but could erupt again |
| Extinct | The volcano has not erupted in thousands of years |
| Earthquake | A sudden movement or trembling of the earths surface |
| Focus | The beginning point of an earthquake |
| Seismic waves | The waves that cause trembling from the focus point of an earthquake |
| Epicentre | The centre of the earthquake on the earths surface |
| Aftershock | An earthquake taking place after another earthquake |
| Seismograph | An instrument that helps us measure an earthquake |
| Richter scale | An instrument that shows the strength of an earthquake (magnitude) |
| Tsunami | Huge waves caused by earthquakes or volcanic eruptions taking place under the sea |
| Short term response | Something that has to be done immediately after a disaster |
| Long term response | Something that will take a long time to do after a disaster |
| Fold Mountains | Mountains that have been formed by convergent plates |
| Anticline | In mountain ranges anticline is the rock that goes upwards |
| Syncline | In mountain ranges syncline is the rock that goes downwards |
Created by:
KBertier
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