Section 2-2 Measuring Earthquakes

Andrea Gonzalez

Isabella Alexander

Sylvia Silva

Alondra Rodriguez

12/10/07

Focus

• The point beneath Earth’s surface were rock breaks under stress and causes an earthquake.

Epicenter

• The point on Earth’s surface directly above an Earthquakes surface.

Seismic Waves

• A vibration that is released during an earthquake.

Primary Waves

• A type of seismic wave that moves like an accordion.

Secondary waves

• A type of seismic wave that moves the ground up and down or side to side.

Surface Waves

• A type of seismic wave formed by S & P waves when they reach the surface

Seismograph

• A device that records vibrations on Earth’s surface

Magnitude

• Measurement of an earthquake’s strength based on seismic waves & movement near fault

Mercalli Scale

• Scale that rates earthquakes according to their intensity & how much damage they cause

Richter Scale

• A scale that rates seismic waves measured by a particular type of seismograph

Moment Magnitude Scale

• A scale that rates earthquakes by estimating the total energy released by an earthquake

Seismic waves

• As seismic waves travel through Earth,they carry the energy of an earthquake from the focus to the surface.

Detecting Seismic Waves

• Earthquakes produce two types of seismic waves p waves and s waves that travel out in all direction from the focus of an earthquake.

Measuring Earthquakes • Today the moments magnitude scale is used to

determine the magnitude of an earthquake .• Other scales that geologists have used to rate

earthquakes include the Mercalli scale and the Richter scale.

• Earthquakes produce two types of seismic waves, P & S waves, that travel out all directions from the focus of an earthquake

We Learned

• We learned that there are three different type of seismic waves,P waves,S waves,and Surface waves.

• We also learned that surface waves produce the most severe ground movements.

• Also we learned the focus and the epicenter run in a straight line.

• Finally we learned that there are three different types of seismographs Moment magnitude,Richter ,and Merrcali Scale.

Science

Grade Rubricfor Andrea Gonzalezfor Andrea Gonzalez

• Presentation has title, mentions member’s Presentation has title, mentions member’s names, and includes a complete date.names, and includes a complete date.

• Topic slides are well thought out, informative, Topic slides are well thought out, informative, full of details, and demonstrate a deep full of details, and demonstrate a deep understanding of the subject.understanding of the subject.

• Presentation is very creative, animated, and Presentation is very creative, animated, and uses many of the formatting techniques learned uses many of the formatting techniques learned in class.in class.

• Student helped gather the information, Student helped gather the information, cooperated with the formatting, and helped the cooperated with the formatting, and helped the group stay focused by avoiding off-task group stay focused by avoiding off-task behavior.behavior.

» TOTAL:TOTAL:

33 33

2020 2020

1010 1010

77 77

4040 4040

Science

Grade Rubricfor Isabella Alexanderfor Isabella Alexander

• Presentation has title, mentions member’s Presentation has title, mentions member’s names, and includes a complete date.names, and includes a complete date.

• Topic slides are well thought out, informative, Topic slides are well thought out, informative, full of details, and demonstrate a deep full of details, and demonstrate a deep understanding of the subject.understanding of the subject.

• Presentation is very creative, animated, and Presentation is very creative, animated, and uses many of the formatting techniques learned uses many of the formatting techniques learned in class.in class.

• Student helped gather the information, Student helped gather the information, cooperated with the formatting, and helped the cooperated with the formatting, and helped the group stay focused by avoiding off-task group stay focused by avoiding off-task behavior.behavior.

» TOTAL:TOTAL:

33 33

2020 2020

1010 1010

77 77

4040 4040

Science

Grade Rubricfor Sylvia Silvafor Sylvia Silva

• Presentation has title, mentions member’s Presentation has title, mentions member’s names, and includes a complete date.names, and includes a complete date.

• Topic slides are well thought out, informative, Topic slides are well thought out, informative, full of details, and demonstrate a deep full of details, and demonstrate a deep understanding of the subject.understanding of the subject.

• Presentation is very creative, animated, and Presentation is very creative, animated, and uses many of the formatting techniques learned uses many of the formatting techniques learned in class.in class.

• Student helped gather the information, Student helped gather the information, cooperated with the formatting, and helped the cooperated with the formatting, and helped the group stay focused by avoiding off-task group stay focused by avoiding off-task behavior.behavior.

» TOTAL:TOTAL:

33 33

2020 2020

1010 1010

77 77

4040 4040

Science

Grade Rubricfor Alondra Rodriguezfor Alondra Rodriguez

• Presentation has title, mentions member’s Presentation has title, mentions member’s names, and includes a complete date.names, and includes a complete date.

• Topic slides are well thought out, informative, Topic slides are well thought out, informative, full of details, and demonstrate a deep full of details, and demonstrate a deep understanding of the subject.understanding of the subject.

• Presentation is very creative, animated, and Presentation is very creative, animated, and uses many of the formatting techniques learned uses many of the formatting techniques learned in class.in class.

• Student helped gather the information, Student helped gather the information, cooperated with the formatting, and helped the cooperated with the formatting, and helped the group stay focused by avoiding off-task group stay focused by avoiding off-task behavior.behavior.

» TOTAL:TOTAL:

33 33

2020 2020

1010 1010

77 77

4040 4040

Science

Teacher Notes• Excellent use of pictures to support your vocabulary definitionsExcellent use of pictures to support your vocabulary definitions

• Nice summaries of main ideasNice summaries of main ideas

• Some spelling and grammatical errorsSome spelling and grammatical errors

• Great details of what you learned from this projectGreat details of what you learned from this project