Refer to page 272- 278 to fill in the following notes. What causes earthquakes? Earthquakes happen at the boundaries between_____________________________________. Scientists think that earthquakes occur at plate boundaries mainly where two plates become ____________________or ___________________________. Plates are being moved along by convection currents but they can’t move. Gradually the pressure deforms _______________. Eventually the rocks can’t with stand the pressure and they suddenly ____________________________. Earthquakes far from Plate Boundaries: Plate boundaries are not the only place that earthquakes occur. Sometimes they occur along fault lines. Explain what a fault is __________________________________________________________________. That first break: Define each of the following and label them on the diagram Faults____________________________________________________________________________ Focus_____________________________________________________________________________ Seismic waves______________________________________________________________________ Epicenter__________________________________________________________________________ Measuring the strength of Earthquakes: In your own words, explain the Richter scale. _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Using the Canadian Earthquake handout: What is the strongest earthquake to occur in Canada, when did it occur and what was the strength? _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Where do the majority of Canada’s earthquakes occur? _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Using the chromebooks choose one famous earthquake and research the following questions. Pretend you are a reporter and write an article about the quake. Where did it occur? (city, country and plate) When did it occur? What was the strength on the Richter scale? Explain the damage done. https://earthquake.usgs.gov/learn/kids/ Using the above website, answer the following questions. List the location and magnitude of an earthquake that has occurred this week. _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Using “Today in Earthquake History” enter your birthday and write down the location and magnitude of the earthquake shown. _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Looking at “Cool Earthquake facts” answer the following: What was the strongest earthquake to occur? Where did the strongest earthquake in the USA happen and what was the magnitude on the Richter Scale?