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32 Cards in this Set
- Front
- Back
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when a volcano is active, it erupts hot rock and hot _____.
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Ash
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_____ rocks can usually be found where a volcano has once erupted.
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Lava
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_____ lived in Mexico and was the first boy to see a volcano born.
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Pedro
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The dirt beneath Pedro's feet got so hot that his feet began to _____ ___ ______.
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Burn and hurt
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Pedro watched the surface of the earth ____ ____.
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Split open
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The volcano which erupted in Mexico in 1943 was named _______.
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Paricutin
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Scientists who study volcanoes are called __________.
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volcanologists
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After ___ _____ Paricutin stood 1,100 feet, or 330 meters, high.
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One year
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Paricutin erupred for about __ years.
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9
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A _____ is a water pool that shoots out streams of hot water and steam.
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Geyser
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Some geysers can be counted on to erupt within a certain ____ __ ____.
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Amount of time
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The same kind of ____ ____ that causes a volcano to erupt also causes a geyser to shoot streams if steaming water.
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Heat force
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_____ is the source of heat from inside the earth that causes geysers and volcanoes to erupt.
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Magma
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A ______ shoots out materials from 40 miles, or 65 kilometers, beneath the surface of the earth.
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Volcano
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The crust, the mantle, and the core are the three layers of _____.
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Earth
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The _____ is the outr layer of the earth and is from 5-25 miles, or 8-40 kilometers, thick.
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Crust
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The ______, which is the middle layer of the earth, is solid and hard, but we don't know for sure what is in it.
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Mantle
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The ___, which is the inner layer of th earth, is thicker than the mantle and the crust put together.
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Core
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_____ volcanoes are those which are erupting right now.
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Active
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______ volcanoes are those which have not been active for 1,000 years or more.
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Extinct
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______ volcanoes are those which are sleepingt but may erupt.
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Dormant
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A _________ finds and records earthquake actions beneath the surface of the earth.
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seismograph
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A _______ measures the of slope on the outside of a volcano's sides.
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tiltmeter
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The pacific "____ __ _____" is where most of the great volcanic eruptions have occured.
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Ring of fire
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Bad-smelling _____ coming out of the ground nay warn that a earthquake is going to take place.
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Gases
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Before an earthquake, animals seem to ____ that something is about to take place.
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Sense
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Seimograph readings can help scientists know ahead of time about great sea waves, or ________.
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Tsunamis
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A tsunami may reach speeds uo to ___ ____ __ ___ _______ an hour.
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500 miles, or 800 kilometers
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A tsunami may cause damage to _______ ____ that is far away, on another sidem of the earth, from the earthquake.
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Coastal area
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The modified Mercalli Scale describes the amount of damage done by a/an _________.
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Earthquake
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The _____ Scale is the best-known scale for measuring earthquakes.
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Richter
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Most of the ____ that comes to people during earthquakes is caused by falling objects, falling walls, flying glass, fires, and fallen power lines.
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Harm
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