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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. __________________________________________________________________________________________________ __________________________________________________________________________________________________ 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. __________________________________________________________________________________________________ __________________________________________________________________________________________________