Earthquakes
The huge pieces of crust that hit each other, move away from each other, and slide against each other are called ________.
What is "plates"?
225 million years ago, all the continents were put together. This huge continent was called ______________.
What is "Pangaea".
Name the type of volcano that normally has an explosive eruption.
What is "the ash-cinder volcano"?
A tsunami is normally caused by an ____________ that takes place in the ocean.
What is "an earthquake".
The spot where an earthquake occurs is called the ___________.
What is "epicenter".
The cracks between the pieces of crust that hit each other, move away from each other, and slide into each other are called _________.
What is "faults or boundary's"?
In 1980 this volcano erupted in Washington. To date, This is the most studied volcano in North America.
What is "Mt. St. Helen."
Name of the type of volcano that does not have an explosive eruption. Instead, lava oozes out. (hint- captain america)
What is "a shield volcano".
The amount of Tsunamis to hit Minnesota is________________.
What is "0".
The most direct waves, or the fastest traveling back and forth waves, are called the ____________
What is "P waves" or "primary waves".
Stress that pushes a mass of rock in two opposite directions is called _______
What is "Shearing"?
In the worlds history of recording earthquakes, we have not seen past a magnitude in the ___________ on the Richter scale
What is "9's."
Magma made from mostly silicon and carbon usually erupts ___________ because it is light and gas build's up.
What is "explosively"?
A country that struggles a lot with tsunamis and is also on the cutting edge of earthquake architecture. (major earthquake and tsunami hit in 2011)
What is "Japan".
The side-to-side waves, or the waves that travel at about 3 miles/second, are called ____________
What is "S-waves or secondary waves".
To tell how far an earthquake’s epicenter is from a seismograph, scientists measure the difference between the _______
What is "arrival times of the P waves and S waves."?
Certain fossils of animals that cannot swim exist on two continents that are 3,000 miles away. Explain how this is possible.
What is "at one time, the continents were together."
Magma that is composed of magnesium and iron normally erupts ______________ because that magma is very dense and has a high viscosity.
What is "non-explosively or Quiet eruption"?
Most of Earths tsunamis happen along the pacific oceans "________"
What is "Ring of fire".
The waves that travel near the top of the crust and go up and down in a wave motion are called _______________.
What is "surface waves".
The type of seismic waves that move by compressing and expanding the ground like an accordion are called
What is "P waves"?
Explain how the Himalaya Mountains (in Asia) formed.
What is "India, or the Indian plate, collided with Asia to create the mountains."
Some volcanoes have not erupted in a long time, but COULD erupt again. These volcanoes are called _____________.
What is "dormant".
A tsunami's waves can reach as high as _____________ in some cases. (hint: below 150ft and above 70ft)
What is "100 feet".
Explain why surface waves are the most damaging forms of earthquake waves.
What is "they cause the most faulting and upheaval on the earth's surface" (Ground is moving around the most.)