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Earthquake basics
Earthquake measures
Mix it up!
Volcanoes
Volcano Challenge
100
This has occurred when the earth's crust shakes or vibrates.
What is an earthquake?
100
This is an instrument that records earthquake waves.
What is a seismograph?
100
This break along the Earth's crust is also called...
What is a fault?
100
Melted rock inside the earth is called
What is magma?
100
Some volcanoes form in the ocean where plates are moving this way.
What is away from each other?
200
This is the point underground where the movement first takes place.
What is focus?
200
A seismograph has these two main parts.
What is a pen and a paper-covered rotating drum?
200
In our classroom experiment, the two post-it notes represented these
What are plates?
200
Melted rock that reaches the earth's surface is called
What is lava?
200
This type of volcano is a large mountain with gentle slopes.
What is a shield volcano?
300
This is the point on the surface that is right above the focus.
What is epicenter?
300
This scale measures the movement and damage that an earthquake causes.
What is the Mercalli scale?
300
In 1994 the Northridge earthquake caused parts of L.A. to move 20 centimeters. The plates usually move this much a year.
What is 1 centimeter?
300
Magma rises toward the surface through a rocky tube called a
What is a vent?
300
This type of volcano is small and is made of hardened lava chunks called cinders.
What is a cinder cone?
400
This popular fault is located in California.
What is the San Andreas Fault?
400
This scale uses the numbers 1 through 9 to measure the energy an earthquake releases.
What is the Richter scale?
400
This Roman numeral on the Mercalli scale would represent the least amount of damage
What is I (one)?
400
This is an underground pool that holds hot magma.
What is the magma chamber?
400
This type of volcano is a medium sized mountain. It is made up of layers of lava that alternate with layers of cinder.
What is a composite volcano?
500
Many earthquakes happen where two of these move past each other.
What are plates?
500
The Roman numeral "XII" is the highest number on Mercalli scale. This Roman numeral is the number...
What is twelve (12)?
500
A mountain that is formed when red-hot melted rock flows through a crack onto the earth's surface is called this
What is a volcano?
500
This is a large, bowl-shaped depression that can be formed when a volcano falls into itself.
What is a crater?
500
One good effect of a volcano is that it provides this to soil and crops.
What is minerals?