Earth's Structure
Earthquakes
Volcanos
Rocks and Minerals
Soil
100
Solid outer layer of the crust.
What is the earth's crust?
100
a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
What is an earthquake?
100
Molten rock on the earth's surface.
What is magma?
100
Material of the earth's crust consisting of mineral particles.
What is a rock?
100
Organic material that has decayed completely.
What is humus?
200
Massive zone of the earth that lies between the crust and the core.
What is the mantle?
200
Measures and records earthquakes.
What is a seismograph?
200
A volcano that hasn't erupted in a long time.
What is a dormant volcano?
200
Naturally formed non-living substance, often occurring as crystals.
What is a mineral?
200
Soil that is bound together wirh plant roots, and is full of micro-organisms, insects, and small animals.
What is topsoil?
300
The inner part of the earth.
What is the earth's core?
300
The slowest and most damaging, capable of crumbling buildings.
What are surface waves?
300
Cooled and dried lava.
What are igneous rocks?
300
Mechanical, chemical, and biological processes that wear down rocks.
What is weathering?
300
Broken rock below the subsoil.
What is parent material?
400
A super continent comprising all of the continental crust of the earth.
What is Pangaea?
400
When two plates are moving away from each other.
What is a divergent boundary?
400
A chain of stratovolcanoes circling the Pacific Ocean.
What is the Ring of Fire?
400
Characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material.
What is Mohs scale?
400
The science of artificial application of water to the land or soil.
What is irrigation?
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