Flashcards
S&S test term 2 climate/earthquake
Flashcards do conjunto (16)
- 1Shieldsarea of very old rock that used to be ancient mountains but have worn down
over time. - 2Valleysreas of low land in between higher land, often created by water or glaciers
wearing down the land. - 3Plateauslat, raised up land, similar to plains, often between mountains
- 4Plainslarge areas of flat land at low elevations. Often these areas used to be the
bottom of ancient oceans. - 5Mountainsareas of high land that rise above surrounding land, formed by converging
crusts (ex. Fold Mountains) or by volcanoes (lava escaping, piling up, then cooling). - 6Water erosion (one of the three types of erosion that can change landforms)rain, waves, rivers
- 7Ice erosion (one of the three types of erosion that can change landforms)glaciers
- 8Wind erosion(one of the three types of erosion that can change landforms)hurricanes, tornadoes
- 9What is the lithospherethe layer of solid rock that we stand on, made up of the crust and upper
mantle - 10What is the asthenospherethe semi-liquid layer of melted rock under the Earth’s surface, which causes the plates to move
- 11Convergenttowards each other
- 12Divergentaway from each other
- 13Transformgrind against each other
- 14How do earthquakes occur? explainEarthquakes can happen at convergent plate boundaries, when plate subduction happens.
One plate will be under pressure as it gets stuck and has limited space to move, and when
this plate “slips” or unsticks, it releases the pressure which shakes Earth’s plates. This can
also happen at a transform boundary. - 15What process causes the plates to move? How does this work?Convection flow. This process is when hot fluid material rises then cools down near the
Earth’s surface, and then is replaced by more hot material, creating a circular motion. - 16What happens when an oceanic plate meets a continental plateThe oceanic plate, which is thicker and heavier, will slide underneath the continental plate,
called plate subduction.