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EARTHQUAKE
• DESCRIBED AS ANY SUDDEN SHAKING OF THE
GROUND THAT OFTEN OCCURS ALONG
GEOLOGIC FAULTS
• FOCUS/HYPOCENTER-WHERE THE
EARTHQUAKE BEGINS
• EPICENTER-POINT DIRECTLY ABOVE THE
FOCUS
TYPES OF EARTHQUAKE
• 1. Tectonic earthquake- occurs where Earth’s
crust breaks or move due to geological forces
TYPES OF EARTHQUAKE
• 2. Volcanic earthquake-results from tectonic
forces related to volcanic activities
TYPES OF EARTHQUAKE
• 3. Collapse earthquake-usually occurs in
underground mines that are usually caused by
seismic waves from rock explosions
TYPES OF EARTHQUAKE
• 4. Explosion earthquake-occurs from the
detonation of any nuclear or chemical device
(NUCLEAR BOMB, ATOMIC BOMB,
TYPES OF FAULT
• FAULT
-FRACTURE FOUND BETWEEN TWO
BLOCKS OF ROCKS ON EARTH’S CRUST
-CRACKS MADE DUE TO BREAKING OF
ROCKS
-WHEN THE FAULT BLOCKS MOVE,
EARTHQUAKE MAY OCCUR
NORMAL FAULT
• RESULT OF TENSION WHICH
STRESSES OR PULLS THE ROCK
APART
• HANGING WALL MOVES
DOWN
• EX: BASIN RANGE AREA
REVERSE FAULT
• HANGING WALL MOVES UP
• RESULT OF COMPRESSION
WHICH SQUEEZES THE ROCKS
TOGETHER
• EX: GABRIEL MOUNTAINS
STRIKE SLIP FAULT
• PUSHES THE ROCKS
HORIZONTALLY BUT IN
OPPOSITE DIRECTION
• EX: SAN ANDREAS FAULT
MAGNITUDE
• ESTIMATE THE RELATIE SIZE OR STRENGTH OF
AN EARTHQUAKE
• SEISMOGRAPH-MEASURES THE MAGNITUDE
INTENSITY
• DESCRIBED THE SEVERITY OF AN
EARTHQUAKE IN TEMS OF ITS
EFFECTS ON EARTH’S SURFACE AND
ON HUMANS AND THEIR STRUCTURE
IN A SPECIFIC LOCATION
ACTIVITY 4
DIRECTION: IDENTIFY THE TERMS BEING
DESCRIBED.
______1. SUDDEN SHAKING OF THE
GROUND
_______2.

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earthquake.pptx

  • 1. EARTHQUAKE • DESCRIBED AS ANY SUDDEN SHAKING OF THE GROUND THAT OFTEN OCCURS ALONG GEOLOGIC FAULTS • FOCUS/HYPOCENTER-WHERE THE EARTHQUAKE BEGINS • EPICENTER-POINT DIRECTLY ABOVE THE FOCUS
  • 2.
  • 3. TYPES OF EARTHQUAKE • 1. Tectonic earthquake- occurs where Earth’s crust breaks or move due to geological forces
  • 4. TYPES OF EARTHQUAKE • 2. Volcanic earthquake-results from tectonic forces related to volcanic activities
  • 5. TYPES OF EARTHQUAKE • 3. Collapse earthquake-usually occurs in underground mines that are usually caused by seismic waves from rock explosions
  • 6. TYPES OF EARTHQUAKE • 4. Explosion earthquake-occurs from the detonation of any nuclear or chemical device (NUCLEAR BOMB, ATOMIC BOMB,
  • 7. TYPES OF FAULT • FAULT -FRACTURE FOUND BETWEEN TWO BLOCKS OF ROCKS ON EARTH’S CRUST -CRACKS MADE DUE TO BREAKING OF ROCKS -WHEN THE FAULT BLOCKS MOVE, EARTHQUAKE MAY OCCUR
  • 8.
  • 9. NORMAL FAULT • RESULT OF TENSION WHICH STRESSES OR PULLS THE ROCK APART • HANGING WALL MOVES DOWN • EX: BASIN RANGE AREA
  • 10.
  • 11. REVERSE FAULT • HANGING WALL MOVES UP • RESULT OF COMPRESSION WHICH SQUEEZES THE ROCKS TOGETHER • EX: GABRIEL MOUNTAINS
  • 12.
  • 13. STRIKE SLIP FAULT • PUSHES THE ROCKS HORIZONTALLY BUT IN OPPOSITE DIRECTION • EX: SAN ANDREAS FAULT
  • 14. MAGNITUDE • ESTIMATE THE RELATIE SIZE OR STRENGTH OF AN EARTHQUAKE • SEISMOGRAPH-MEASURES THE MAGNITUDE
  • 15. INTENSITY • DESCRIBED THE SEVERITY OF AN EARTHQUAKE IN TEMS OF ITS EFFECTS ON EARTH’S SURFACE AND ON HUMANS AND THEIR STRUCTURE IN A SPECIFIC LOCATION
  • 16.
  • 17. ACTIVITY 4 DIRECTION: IDENTIFY THE TERMS BEING DESCRIBED. ______1. SUDDEN SHAKING OF THE GROUND _______2.