Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
Plate Margins - moving apart |
Constructive |
|
|
Plate margins - moving past |
Conservative |
|
|
Plate margins - togher |
Destructive |
|
|
Constructive process |
Plates move apart. The gap left forms new land. Gap left also lets magma rise. Shield volcanos. |
|
|
Destructive process |
Oceanic plate subducts into the magma in the mantle. Oceanic and continental plate collide. Composite Cone Volcanos formed. |
|
|
Conservative process |
Two plates move past each other. Can be moving in opposite directions or the same direction. Earthquakes from tension build ups. |
|
|
Shield Volcanos |
Smaller but wider. Wide base. Forms when magma flows through the gap left from constructive plate margins. Not very violent. Regular/frequent eruptions. Only made of lava. Runny, acid and low viscosity (not sticky) lava. |
|
|
Composite Cone Volcanos |
A magma chamber is formed when the oceanic plate subducts in a destructive plate margin. Tall and narrow. . Alternate layers of lava and ash. Irregular eruptions. Violent explosions.Alternate layers of lava and ash. Irregular eruptions. High viscosity lava (sticky - hardens when it has not flown far to build up the layers on the volcano).Dense lava. High viscosity lava (sticky - hardens when it has not flown far to build up the layers on the volcano). Dense lava. |
|
|
Earthquakes |
Formed when tension builds up when plates get stuck together. Can happen at destructive plate boundaries but mainly at conservative plate boundaries. When the place were the plates get stuck is released (focus), seismic energy is sent out in waves. The area above the focus is the epicentre and gets hit the worst. Depending on how close the epicentre is to the focus is how strong the earthquake will be. Aftershocks are smaller earthquakes occuring afterwards. |
|
|
Tropical storm names |
Hurricane Typhoon Cyclone |
|
|
Cell location around the earth |
North Polar - 90 degrees Ferrel - 60 degrees Hadley - 30 degrees Equator Hadley - 30 degrees Ferrel - 60 degrees Polar -90 degrees South |
|
|
What is happening to air in a low pressure area. |
The air rises. |
|
|
What is happening to the air in high pressure areas. |
The air falls. |
|
|
What are found at 30 degrees |
Desert and Savannah |
|
|
Which way does wind blow above the equator? |
Clockwise |
|
|
Which way does the wind blow south of the equator |
Anti clockwise |
|
|
How hot mist the ocean be for tropical storms |
26 degrees or over |
|
|
How deep must water be for tropical storms to form |
50m and over |
|
|
How do tropical storms form |
Hot air rises and cools to form rain when the air reaches the point of cooling. The rising air builds up a storm system and the the rotation of the earth causes that formation to spin. The eye looses pressure and cold air falls. The air at the top gets pushed aside as it gets bigger to increase size. |
|
|
What type of pressure is in the eye of a storm |
Low pressure |
|
|
Where is the most damage in a tropical storm |
In the sections right beside the eye. |
