0
1. The minimum number of seismograph
stations necessary to determine the
location of an earthquake is .
2. Which point bel...
ReviewReview
• P-waves
• S-waves
• L-waves
• Epicenter
• Focus
• Trilateration
VolcanoesVolcanoes
Any opening in the Earth’s
crust through which magma
reaches the surface
The openings are called
vents
VolcanoesVolcanoes
When magma reaches
the surface it is called
lava
Hills or mountains are a
result of this process
VolcanoesVolcanoes
•3 types of volcanoes
Shield VolcanoesShield Volcanoes
Broad and rounded
Made from stacks of
runny basaltic lava
Mauna Loa, Hawaii
Kilimanjaro, Africa
Cinder ConeCinder Cone
Smallest, most abundant
Violent eruptions with lots
of ash
Active for short time, then
become do...
Paricutin, MexicoParicutin, Mexico
Composite ConeComposite Cone
Steep sided volcano made of
alternating layers of cinders
and lava
Usually found along plat...
Mount Fuji, JapanMount Fuji, Japan
OccurrencesOccurrences
Most
volcanoes
occur at or
near
subduction
zones
Arenal Volcano, Costa RicaArenal Volcano, Costa Rica
OccurrencesOccurrences
Some occur near
divergent plate
boundaries
IcelandIceland
OccurrencesOccurrences
Some occur in the
middle of plates
Hot spot volcanoes
Mauna Loa, Hawaii
Kilimanjaro, Africa
EruptionsEruptions
•Different types of
eruptions
Explosive Quiet
Different types of LavaDifferent types of Lava
Aa Lava
Pahoehoe LavaPahoehoe Lava
Skylight
Volcanoes
Volcanoes
Volcanoes
Volcanoes
Volcanoes
Volcanoes
Volcanoes
Volcanoes
Volcanoes
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Volcanoes

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Transcript of "Volcanoes"

  1. 1. 1. The minimum number of seismograph stations necessary to determine the location of an earthquake is . 2. Which point below is the focus of the earthquake? 3. Which point below is the epicenter of the earthquake? A B 3 B A
  2. 2. ReviewReview • P-waves • S-waves • L-waves • Epicenter • Focus • Trilateration
  3. 3. VolcanoesVolcanoes Any opening in the Earth’s crust through which magma reaches the surface The openings are called vents
  4. 4. VolcanoesVolcanoes When magma reaches the surface it is called lava Hills or mountains are a result of this process
  5. 5. VolcanoesVolcanoes •3 types of volcanoes
  6. 6. Shield VolcanoesShield Volcanoes Broad and rounded Made from stacks of runny basaltic lava
  7. 7. Mauna Loa, Hawaii
  8. 8. Kilimanjaro, Africa
  9. 9. Cinder ConeCinder Cone Smallest, most abundant Violent eruptions with lots of ash Active for short time, then become dormant
  10. 10. Paricutin, MexicoParicutin, Mexico
  11. 11. Composite ConeComposite Cone Steep sided volcano made of alternating layers of cinders and lava Usually found along plate boundaries
  12. 12. Mount Fuji, JapanMount Fuji, Japan
  13. 13. OccurrencesOccurrences Most volcanoes occur at or near subduction zones
  14. 14. Arenal Volcano, Costa RicaArenal Volcano, Costa Rica
  15. 15. OccurrencesOccurrences Some occur near divergent plate boundaries
  16. 16. IcelandIceland
  17. 17. OccurrencesOccurrences Some occur in the middle of plates Hot spot volcanoes
  18. 18. Mauna Loa, Hawaii
  19. 19. Kilimanjaro, Africa
  20. 20. EruptionsEruptions •Different types of eruptions
  21. 21. Explosive Quiet
  22. 22. Different types of LavaDifferent types of Lava Aa Lava
  23. 23. Pahoehoe LavaPahoehoe Lava
  24. 24. Skylight
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