Earth's Structure
Rock Types and Earth's Layers
Plate Tectonics and Seismic Data
Earthquakes and Volcanoes
100
Any process that breaks down rocks and creates sediments.
What is Weathering?
100

Double Jeopardy: Outermost layer • Oceanic crust is thinner • Oceanic crust (basalt) is of mostly silicon than continental crust more dense than continental and oxygen

What is crust?

100
Landforms of Earth can be created or changed by _____________ and _____________.
What is volcanic eruptions and mountain-building forces?
100

Double Jeopardy: The most volcanically active belt on Earth is known as the ____________, a region of volcanic activity that happens at subduction zones surrounding the Pacific Ocean.

What is Ring of Fire?

200
The breakdown of rock into smaller pieces.
What is Mechanical (physical) weathering?
200
Forms when molten rock (magma or lava) cools and hardens.
What is igneous rock?
200

Double Jeopardy: Where two plates are moving apart

What is Divergent boundary?

200
An area in the mantle from which heat rises in the form of a thermal plume from deep within the Earth.
What is hotspot?
300
Decomposition of rock caused by chemical reactions resulting in formation of new compounds.
What is Chemical weathering?
300
Forms from the compaction and/or cementation of rock pieces, mineral grains, or shell fragments called sediments.
What is sedimentary rock?
300
At one time in geologic history the continents were joined together in one large landmass that was called ____________.
What is Pangaea?
300
Result in the movement of lithospheric plates.
What are Convection currents?
400
Occurs when the agents (wind or water) of erosion lay down sediment.
What is Deposition?
400
Forms when rocks are changed into different kinds of rocks by great heat and/or pressure – they are heated, squeezed, folded, or chemically changed by contact with hot fluids and/or tectonic forces.
What is metamorphic rock?
400
Where two plates come together and collide
What is Convergent boundary?
400
Earthquakes occur along ________________ where tectonic forces result in the formation of faults and the buildup of pressure.
What is plate boundaries?
500

Double Jeopardy: The process by which natural forces move weathered rock and soil from one place to another.

What is Erosion?

500
• Middle layer • Thickest layer • Top portion called the asthenosphere
What is mantle?
500
Where two plates slide past each other
What is Transform boundary?
500

Double Jeopardy: A ______ line is where most earthquakes occur!

What is fault?

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