Volcanoes
Vocab
The Earth
Surface of the Earth
Soil
100
What is lava?
Melted rock above the earth's crust.
100
Fossil
Any part of an ancient organism preserved in rock?
100
Whats the difference between a convergent boundary and a divergent boundary?
Convergent boundary plates move towards each other, divergent boundary plates move away from each other.
100
Where are the lithosphere and the astensphere located?
lithosphere- in between the crust and mantle, asthenosphere- in the mantle
100
Remains of once living organisms such as plants and animals and their waste products?
What is organic matter
200
What is magma?
Melted rock under the earth's crust.
200
Most active volcanoes on Pacific Ocean coasts.
What is the Ring of Fire?
200
The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary?
What is Subduction
200
Name the four layers of earth.
Crust, Mantle, Outer Core, Inner Core
200
What are decomposers?
organisms like worms, bacteria and fungi that break down organic matter into nutrients for the soil.
300
What is a shield volcano?
gentle slop, usually does not explode
300
Convection Current
Currents in the mantle cause plates to move slowly.
300
What is a transform boundary?
What is a plate boundary where two plates move past each other in opposite directions.
300
What are the two inner most layers of earth?
Outer Core and Inner Core
300
Dark colored soil, full of nutrients that form as plant and animal remains decay?
What is humus.
400
What is a cinder cone volcano?
steep slope, looks like mountains, moderately violent
400
Heat in mantle causes plates to move.
What is a Continental Drift?
400
Form long chains of mountains that rise up from the ocean floor?
What is Mid-ocean ridge.
400
What are each of the layers made off?
Crust=Solid, Mantle=Liquidy solid, Outer Core=Liquid, Inner Core= Solid
400
The process by which water, wind and ice wear down rocks and other surfaces?
What is Weathering.
500
What is a composite volcano?
gentle slope at bottom with steep slope at the top, very bad
500
The theory that all continents were once all joined together.
What is Pangaea?
500
The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle?
What is Plate tectonics
500
How do moving plates change the earth's crust?
As plates move, they produce mountains, volcanoes and valleys as well as mid-ocean ridges and deep-ocean trenches.
500
What is bedrock?
solid layer of rock beneath the soil.
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