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Geology

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Rachael Donnelly

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Cards in this guide (14)
The first major scientific exploration of the ocean was performed in 1872 by the Portuguese ship the HMS Columbia

false

This is also known as a constructive boundary

Divergent is also known as a constructive boundary.

An earthquake that was rated 3 on the Richter scale would be

An earthquake that was rated 3 on the Richter scale would be

ignored

This is also known as a destructive boundary

convergent

Three of the four layers of this part of this crust are igneous material

Oceanic Crust

Gravity causes materials to pile up in mounds called what

Talus

Steep-sided islands are sometimes formed by sea mounts

true

This kind of mountain has weathered and rounded peaks and gentle slopes

mature

Results when underground water is heated by geothermal energy

geyser

This is the second era in geologic time

Paleozoic

Mid ocean ridges are actually underwater mountain ranges

It is true that mid-ocean ridges are underwater mountain ranges. These ridges are where the lithosphere is moving apart and new oceanic crust is being formed.

Stalactites grow up from the bottom of a cavern floor due to deposit of minerals over time

False.

Approximately 90 percent of the communication amoug all of the nations of the world is acomplished by underwater cable. true or false

False. Approximately 90 percent of the communication among all of the nations of the world is not accomplished by underwater cable.

What is current era today

The current era today is Cenozoic

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Material that is about 180 million years old has been found in this layer of the crust

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This forms when magma pushes into vertical cracks and cuts through layers of rock

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