Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Earthquake+volcano
Year 9 Geography
| Term | Definition |
|---|---|
| Magma | molten rock in the earth's mantle |
| Epicentre | where an earthquake originates/is focused |
| Lahar | Indonesian word for mud-debris landslide that flows from volcanoes |
| Viscosity | how thick or runny lava is, affects explosivity |
| Inner core | centre of the earth, solid, made of iron and nickel |
| Focus | point on the earth's surface directly above the epicentre |
| Plates | large slabs of crust/rock which continually move and/or float on the mantle |
| Destructive plate boundaries | A destructive plate boundary happens where an oceanic and continental plate move towards each other. |
| Convergent plate boundaries | when the earth plates collide and the area is lost either by the shortening and crustal when the earth plates collide and the area is lost either by the shortening and crustal thickening or by the subduction of one plate beneath the other |
| Composite volcano | Large, steep volcano built up of alternating layers of lava and ash or cinders |
| Dome volcano | a roughly circular mound- shaped protrusion resulting from the slow extrusion of viscous lava from a volcano |
| Shield volcano | a type of volcano usually built almost entirely of fluid lava flows. |
| Divergent plate boundaries | places where the tectonic plates of the Earth are moving away from each other. |
| ash | is blasted into the earth from a volcano |
| sulphur dioxide | a gas which is blasted into the earth from a volcano |
Created by:
tescommonstacks
Popular Geography sets