Download 4earthquake and volcano

Earthquakes 4
Name___________________________________ Class _______________Date ___________________
Richter scale
unnoticed
faults
buildings core
California
1000
rock
Alaska
tsunami
draining
people died
seismic waves
boundaries
seismograph
1. On April 18, 1906 in _____________________ the San Andres fault snaps causing a 60 second earthquake.
2. Some of the resulting disasters were ruptured gas lines, fires, and 700 _________________________.
3. Earthquakes happen when masses of _______________shift below earth’s surface.
4. 100’s of little earthquakes shake the surface each day but most go ________________________.
5. Earthquakes occur at plate _____________________that cover earth.
6. Driven by heat deep within earth’s ____________, plates grind against each other along lines called
____________________.
7. Energy races through earth in the form of ____________________________ which are recorded on a
______________________________.
8. Using lines from a seismic wave scientists grade earthquakes using the _________________________.
9. Although there are over 100,000 earthquake a year, only __________________ are strong enough to cause property
damage.
10. The Greatest recorded earthquake in North America was 9.2 in __________________on March 28, 1964.
11. A camera on a ship recorded the ________________ of the entire harbor. What will happen when the water comes
back up? ______________________________
12. Engineers focus on building better _______________________.
Write a sentence telling something you learned.
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Volcanoes 5
Name __________________________________ Class _______________ Date ___________________
shield
plates
interior
soil
liquefy
lava
Hawaii
composite
Ring of Fire
hot spot Mt. Kilauea
200
land pyroclastic flow
geothermal
creator
1. Scientists call volcanoes; opening or vents to the hot _______________ of our planet.
2. 90% of earth’s volcanoes are in the ___________________________ around the Pacific Ocean.
3. Ground just beneath Earth’s crust is made up of slabs of rocks or ______________________.
4. Friction from shifting of plates causes rocks to _________________.
5. Magma that escapes from earth is called ___________________.
6. Runny lava flows quickly and forms gentle slopes called ____________________ volcanoes.
7. A ________________________ volcano erupts violently hurling ash and lava at speeds of _______ mph.
8. _________________________ is the most active volcano. It formed over a ____________________.
9. Mt. Kilauea’s constant eruptions create more________________ so _________________ is the only state still
growing.
10. A deadly combination of heated ash, gas and rock is called a ____________________________.
11. A volcano can be a ___________________ or destroyer; some positives mentioned were, formation of 80% of
earth’s surface, fertilized _______________ for farming, ______________________ energy.
Write a sentence telling something you learned.
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