Show:
Earthquakes
Past and Future
Volcanoes
Tsunamis
Definitions
100
The huge pieces of crust that hit each other, move away from each other, and slide against each other are called ________.
What is "plates"?
100
225 million years ago, all the continents were put together. This huge continent was called ______________.
What is "Pangaea".
100
Name the type of volcano that normally has an explosive eruption.
What is "the ash-cinder volcano"?
100
A tsunami is normally caused by an ____________ that takes place in the ocean.
What is "an earthquake".
100
The spot where an earthquake occurs is called the ___________.
What is "epicenter".
200
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"?
200
Name the ocean that is currently getting larger, and the ocean that is currently getting smaller.
What is "Atlantic Ocean is larger, Pacific Ocean is smaller."
200
Name the type of volcano that does not have an explosive eruption.
What is "a shield volcano".
200
A tsunami's waves can reach as high as _____________ in some cases.
What is "100 feet"
200
The most direct waves, or the fastest traveling back and forth waves, are called the ____________
What is "P waves" or "primary waves".
300
The ____________ fault is a type of fault where two pieces of earth move away from each other.
What is "normal"?
300
Explain what will happen to the Mediterranean Sea (between Africa and Europe) in 50 million years.
What is "the Mediterranean sea will disappear, Africa will collide with Europe."
300
Magma made from mostly silicon and carbon usually erupts ___________ because it is light.
What is "explosively"?
300
The 2004 Indian Ocean Tsunami was caused by the most powerful tremor on Earth in ____________ years.
What is "40 years".
300
The side-to-side waves, or the waves that travel at about 3 miles/second, are called ____________
What is "S-waves or secondary waves".
400
The ___________ fault is a type of fault where pieces of crust slam into each other.
What is "reverse"?
400
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."
400
Magma that is composed of magnesium and iron normally erupts ______________ because that magma is very dense.
What is "non-explosively"?
400
The tremor that caused the 2004 tsunami caused the entire earth's crust to vibrate ________________
What is "1 centimeter".
400
The waves that travel near the top of the crust and go up and down are called _______________.
What is "surface waves".
500
In 50 million years, explain what will happen to California.
What is "it will split apart at the San Andreas Fault. Part of California will move north towards Alaska"
500
Explain how the Himalaya Mountains (in Asia) formed.
What is "India, or the Indian plate, collided with Asia to create the mountains."
500
Some volcanoes have not erupted in a long time, but could erupt again. These volcanoes are called _____________.
What is "dormant".
500
The 2004 Indian Ocean tsunami is to this point the deadliest natural disaster in the 21st century. It killed about ______________ people.
What is "230,000".
500
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"