• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
OLM Science6_7

OLM Science6_7



Grade 6, Chapter 7

Grade 6, Chapter 7



Total Views
Views on SlideShare
Embed Views



0 Embeds 0

No embeds



Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
Post Comment
Edit your comment

    OLM Science6_7 OLM Science6_7 Presentation Transcript

    • Chapter 7 Earthquakes What are Earthquakes? Section 1
    • Seismology
      • The study of earthquakes
    • Fault
      • A break in the Earth’s crust along which the crust slide relative to one another
      Normal Thrust Strike-slip
    • Deformation
      • Change in the shape of a rock in response to stress
    • Elastic Rebound
      • Sudden return of elastically deformed rock
    • Transform Motion
      • Two plates slip past each other
    • Strike-Slip Fault
      • Blocks of crust slide past each other
    • Convergent
      • Occurs where two plates push together
    • Reverse Fault
      • Blocks of crust that are pushed together slide vertically
    • Divergent Motion
      • Two plates pull away from each other
    • Normal Faults
      • Block of crust are pulled away from each other slide vertically
    • Seismic Waves
      • Waves of energy that travel through the Earth
    • P Waves
      • Travel through solids liquids & gases. Fastest seismic waves (Primary Waves)
    • S Waves
      • Shear waves, second fastest seismic wave(Secondary Wave)
    • Surface Waves
      • Moves the ground up and down in circles as the waves travel along the surface
    • Chapter 7 Earthquakes Earthquake Measurement Section 2
    • Seismographs
      • Instruments that record seismic waves
    • Seismogram
      • Tracing of an earthquake motion created by a seismograph
    • Epicenter
      • Point on the Earth’s surface directly above an earthquakes starting point
    • Focus
      • The point inside the Earth where the earthquake begins
    • Finding the Epicenter
      • A circle is drawn around 3 different seismograph station
    • Richter Scale
      • Tool used to measure the earthquake strength
    • Chapter 7 Earthquakes Earthquakes and Society Section 3
    • Earthquake Hazard
      • How prone an area is to experiencing earthquakes in the future
    • Strength & Frequency
      • The weaker the earthquake the more often they occur
    • Gap Hypothesis
      • Sections of active faults that have few earthquakes are likely to be sites of strong earthquakes
    • Seismic Gaps
      • Areas along the fault where relatively few earthquakes have occurred
    • Mass Damper
      • Weight placed on the roof of the building
    • Cross - Braces
      • Braces placed between floors
    • Flexible Pipes
      • Prevent water & gas lines from breaking
    • Base Isolators
      • Act as shock absorbers during an earthquake
    • Active Tendon System
      • Works like damper system in the roof
    • Chapter 7 Earthquakes Earthquake Discoveries near and Far Section 4
    • Moho
      • Space within the Earth where the speed of seismic waves increase sharply
    • Shadow Zone
      • Area on the Earth’s surface where no waves from a particular earthquake can be detected
    • Inner Core
      • Solid inner core
    • Moonquakes
      • Seismograph event on the moon
    • Mars
      • Space probe Viking I
    • The Sun
      • Seismic Waves