Wegener's theory says that the continents were once all together and moved apart.
What is the Continental Drift Theory?
100
At a _______________ boundary, plates are moving apart from each other.
What is divergent?
100
Erosion and weathering break down rocks into small particles called ______________ and move them to new locations.
What are sediments?
100
The type of rock formed by weathering, erosion and deposition of other rocks.
What is sedimentary rock?
100
Fossils are the ______________ or traces of living things.
What are remains?
200
Matching coastlines of _____________ and ____________ was an important piece of evidence for this theory.
What is South America and Africa?
200
At a _________________ boundary, plates are colliding with each other.
What is convergent?
200
When sediments stop moving and settle down into one place and form layers, it is called __________________
What is cementation?
200
When heat and pressure are put onto a piece of shale, it can become slate, a type of ________________ rock.
What is metamorphic?
200
Dino tracks would be a good example of a _____________ fossil.
What is a trace fossil?
300
Scientists discovered a ___________________ in the Atlantic Ocean, that was producing new oceanic crust.
What is a mid-ocean ridge?
300
When 2 plates with continental crust collides, _____________ are formed.
What is a mountain?
300
Running water, wind, ice, and waves are all agents of ____________________.
What is weathering?
300
A piece of igneous granite rock melts into lava at a subduction zone. The lava that forms erupts from a volcano, and cools as rhyolite, another type of _____________ rock.
What is igneous?
300
The Grand Canyon has fossils formed in an ocean, which shows that the _____________ in AZ has changed over time.
What is climate?
400
_____________ currents in the mantle bring up magma at the mid-ocean ridge, and cause the plates to move.
What is Convection?
400
When a plate with oceanic crust collides with a continental plate, a _______________ is formed.
What is a deep ocean trench? or What is a volcanic arc?
400
Near ocean trenches, volcanoes are often formed because ___________________ melts the crust into lava as it is forced back into mantle.
What is heat?
400
Any type of rock that goes through erosion and __________ can be cemented into layers as a new piece of sedimentary rock.
What is deposition?
400
__________________ age of a rock or fossil is how old it is compared to another rock or fossil.
What is geological time?
500
The Theory of ____________________ explains how the Earth is divided into plates that move and affect each other by colliding, dividing, or sliding past each other.
What is the Plate Tectonic theory?
500
At a divergent boundary on land, a __________________ forms.
What is rift valley?
500
The ocean floor has long chains of volcanic mountains called
_________________, which forms as magma comes to the surface on a divergent boundary.
What is a mid ocean ridge?
500
The _____________ is a set of pathways that show how each type of rock is formed, and how rocks can change into different kinds of rocks.
What is the Rock Cycle?
500
_______________ fossils are common and widespread but found in a very short period of time in the fossil record. They are used in determining the relative age of a fossil.