| Layers of the Earth | Earthquakes | Volcanoes | both | occurrence |
|---|---|---|---|---|
|
What is the Earth made of?
made of three layers
|
What is an Earthquake?
a vibration or shaking of Earth's crust
|
What is a volcano?
a mountain that forms when red-hot melted rock flows through a crack onto the earth's surface.
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What are plates?
Earth's crust and upper mantle are broken into continent sized slabs
|
where are earthquakes the most common
California
|
|
What is mantle?
the thicker layer of the planet, mostly made of solid rock
|
What is a fault?
a break in the crust along which rock moves
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What is magma?
melted rock inside Earth.
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how are mountains made
when tectonic plates Collide
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where are volcanoes common
where tectonic plates are diverging or converging.
|
|
What is crust?
the layer that we walk on
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What is focus?
the point where the movement still took place
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What is lava?
melted rock that reaches Earth's surface.
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What is a crack or ridge?
plates that move away from each other form this.
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|
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What is core?
a dense ball made mostly of metal, iron and nickel
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What is epicenter?
the point of the surface that is right above the focus
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What is a vent?
a rocky opening that magma flows through
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What is an earthquake?
plates that slide past each other form this
|
|
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What is inner and outer core?
the core is divided into these two layers
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What is seismograph?
an instrument that records earthquake waves.
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What makes a new ocean floor
a volcano forms in a place when the magma gets to the surface, it cools and hardens to form new ocean floor
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What is Richter scale?
uses numbers 1 through 9 to measure the energy an earthquake releases.
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