SCIENCE Flash Cards

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Title: SCIENCE
Description: EARTH SCIENCE
Number of Cards: 23
Save Count: 1
Author: butfulpeople13
Created: 2002-09-16
Tags: earth earthsciences
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    • Question
    • Answer
    • Side 3
    • what does the mercalli scale do?
    • Rrate EQ according to their intensity (ground motion)the mercalli's 12 steps describe how EQ affect eople,buildings &land surface
    • What fault in california is and example of a Strike-Slip Fault?
    • SAN ANDREAS FAULT
    • what happens when P wave and S wave reach the surrface?
    • when P & S waves reach the surface some of them are transformed into surface waves.
    • WHAT FAULT IS MEXICO IS AN EXAMPLE OF NORMAL FAULT?
    • RIO GRAND RFT VALLEY IN NEW MEXICO
    • Geologist anticlines and syclines to describe what?
    • upward and downward folds in rock
    • What ar the three main types of stress in rock?
    • 1. TENSION
      2. SHEARING
      3. COMPRESSION
    • what are primary waves?
    • P-wave are the 1st to arrive. p-waves are earthquake waves that compress & expand the ground. P-waves cause buildings to contract & expand.
    • WHAT ARE THE 3 TYPES OF FAULT?
    • NORMAL FAULT
      STRIKE SLIP FAULTS
      REVERSE FAULTS
    • what is syncline?
    • A fold in a rock that bends downward in the middle to form a bowl.
    • Whatis an example in Montanna of a Reverse fault?
    • THE GLACIER NATIONAL PARK IN MONTANNA
    • what is anticline?
    • a fold in rock that bends upward into an arch.
    • WHAT FORMS WHEN NORMAL FAULTS UPLIFT A BLOCK OF ROCK?
    • FAULT-BLOCK MOUNTIAN FORMS
    • what is plateau?
    • Plateau is a large area of flat land elevated high above sea level.
    • WHAT ARE FOLDS?
    • FOLDS ARE BENDS IN ROCK THAT FORM WHEN COMPRESSION SHORTEN AND THICKENS PARTS OF THE EARTH CRUST
    • what does the moment magnitude sacle do?
    • rate EQ of all sizes, near or far.
    • what do they rate
      Mercalli scale
      Richter scale
      moment magnitude scale
    • 1. Mercalli rates motion
      2. Richter scale rat size
      3. Moment magnitude rates the total energy released by an earthquake.
    • what are three ways geologist measuring earthquakes?
    • 1. Mercalli scale
      2. richter scale
      3. moment magnitude scale
    • How is Magnitude described?
    • magnitude is a measurement of earthquake strngth based on seismic waves and movement along faults
    • what does the Richter scale do?
    • provides accurate measurements for small, nearby EQ. but does not work well for large or distant EQ
    • what are three types of seismic waves?
    • 1. P waves (primary waves)
      2. S waves (secondary waves)
      3. surface waves
    • what is deformation?
    • Any change in the volume or shape of Earth's crust.
    • what are the 2 waves earthquake send out?
    • P-waves and S-waves
    • what are secondary Waves?
    • after P-waves come then S-waves come. S-waves are earthquake waves that vibrate from side to side,up & down & back & forth.