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Rock Cycle, Plate Tectonics and Fossils
Flashcards for Unit Test on Rock Cycle, Plate Tectonics and Fossils
22
Science
6th Grade
12/03/2011

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Term
What is rock that is formed under high temperature but is not exposed to enough heat to melt?
Definition
Metamorphic
Term
Rock that forms when hot, liquid rock, or magma, cools and solidifies
Definition
Igneous
Term
Shale can be metamorphosed into slate by ....
Definition
increased heat and pressure
Term
Rock made of material that has settled to the bottom of lakes and oceans and have been compressed and hardened is
Definition
Sedimentary Rock
Term
The oldest rock layer is most likely to be the layer that is:
Definition
Below the other layers
Term
Most organisms...
Definition
never became fossils
Term
scientist learn from studying the relationships between fossils?
Definition
How life has changed over time.
Term
Marine fossils were discovered on a Canadian mountain top. What could scientists conclude from this evidence?
Definition
The rocks on the mountaintop were once below the ocean’s surface
Term
What major geological event formed the Applachian and Rocky Mountains?
Definition
Plates Colliding
Term
What layer of the earth is in the center of the earth?
Definition
The Metallic Core
Term
How does erosion help scientists learn more about past geological events?
Definition
It creates new layers of sedimentary rock
Term
The Lithosphere is divided into segments called
Definition
Tectonic plates
Term
Earthquake activity causes
Definition
Sandstone, Shale, Limestone and Granite to crack.
Term
Sedimentary layers on top of other features are thought to be
Definition
younger
Term
Ocean crust is created
Definition
when two plates spread apart
Term
On average how much movement do the earth's plates experience over one year?
Definition
A few CENTIMETERS a year
Term
asthenosphere
Definition
the plastic layer of the mantle on which the tectonic plates move
Term
The rock cycle
Definition
process by which new rock is made from old rock
Term
mantle
Definition
layer of the earth where convection occurs
Term
Rock
Definition
Naturally occurring solid mixture of one or more minerals and organic matter
Term
Continental drift
Definition
The hypothesis that states the continents once formed a single landmass, which broke up and drifted apart
Term
How is the South American Plate moving relative to the Nazca Plate?
Definition
Converging (The two plates are coming together)
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