EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?
Transcript of EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?
![Page 1: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/1.jpg)
EARTHQUAKESYear 1 Science
![Page 2: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/2.jpg)
EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?
![Page 3: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/3.jpg)
EARTHQUAKES
![Page 4: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/4.jpg)
EARTHQUAKES ARE…Natural vibrations of crust that are caused by stress from plate tectonics
![Page 5: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/5.jpg)
3 TYPES OF STRESSES
Compression:The squeezing of rock together until it folds or breaks
![Page 6: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/6.jpg)
3 TYPES OF STRESSES
Tension:The pulling of the crust until materials thin and break
![Page 7: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/7.jpg)
3 TYPES OF STRESSES
ShearPushing rocks into 2 opposite directions
![Page 8: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/8.jpg)
EARTHQUAKE WAVES Vibrations of the ground during an earthquake are called seismic waves.
3 Types of Seismic Waves:
Primary Waves: waves that cause rock particles to move back and forth
Secondary Waves: cause rocks to move at right angles in relation to the wave
Surface Waves: waves that cause particles to move in two directions: up and down, side to side
![Page 9: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/9.jpg)
EpicenterThe point on Earth’s surface directly above the focus
FocusThe point below ground where the earthquake originates
![Page 10: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/10.jpg)
MEASURING EARTHQUAKES
![Page 11: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/11.jpg)
SEISMOMETERS
Scientists use seismometers to measure ground movement caused by seismic waves
![Page 12: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/12.jpg)
The strength of an earthquake = magnitude (a # given to an earthquake based on its strength)
![Page 13: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/13.jpg)
RICHTER SCALE MEASUREMENTSScale Damage
0-4 Minor4-5 Light5-6 Moderate6-7 Strong7-8 Major8+ Catastrophic
![Page 14: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/14.jpg)
![Page 15: EARTHQUAKES Year 1 Science. EQ: WHAT 3 STRESSES LEAD TO EARTHQUAKES?](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4d53d/html5/thumbnails/15.jpg)
NOTE REVIEW-Highlight the following headings:-3 Types of Stresses-3 Types of Seismic Waves-Measuring Earthquakes
-Circle the following terms in BLUE:-Earthquake, Tension, Compression, Shearing, P-Waves, S-Waves, Surface Waves, Epicenter, Focus, Seismometer, Magnitude
-Underline the definitions for the circled terms from above in GREEN