Plate tectonics
What are the boundaries where most volcanoes are found?
Subduction, or convergent plate boundries
What is the process called when igenous rocks form?
Cooling of lava or magma
What causes more erosion in rivers?
Faster flowing water.
What are the two different types of crust?
Oceanic crust and continental crust
What is geological processes observed in the past are the same as those today?
Uniformitarianism
the process where one tectonic plate moves under another
Subduction
What type of rock is formed under heat and pressure?
Metamorphic rocks
What does happens more in slow moving water?
Deposition
Which type of crust is denser?
Oceanic crust
What processes contribute to soil formation?
Weathering, deposition and decomposition.
Where is the Ring of fire located?
Around the pacific ocean
What conditions cause large crystals to grow?
magma cooling slowly under ground.
If you find limestone with shell fossils in it, what kind of environment used to be there?
Ocean
When two plates collide with each other?
Convergent plate boundary
A geologist finds a rock layer that is tilted. The fossils in the rock include oyster shells and brachiopods. It fizzes when acid is dropped on it. What kind of rock is it?
limestone, sedimentary rock
How do mountains form when two continental crust pieces converge?
They push against each other, causing uplift.
How do we determine relative age of rock layers?
Compaire them though superpositioning and index fossils.
Rock breaking down into sediments
Weathering
When two plates slide past each other?
Transform plate boundary
Fossils of an organism that were widespread in a large area but only around for a relatively short period of time?
Index fossils
What causes tectonic plates to move?
Convection currents in the asthenosphere. Sinking of lithosphere into asthenosphere.
Limestone, sandstone, and shale
Can all rocks be weathered?
Yes
Transform plate boundary
Something that can help us learn about past climates, environments, and life.
Fossils