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How Much Do You Know About Volcanoes & Earthquakes?

volcanoes and earthquakes

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  1. What are Earthquakes?

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    Incorrect
    movements in Earth's crust
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    seismic waves
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    Incorrect
    my house just kinda shakes idrk
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    epicenter
  2. Where do Earthquakes happen?

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    along edges of tectonic plate boundaries
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    middle of tectonic plate because of buckling
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    the ocean
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    along edges of tectonic plate boundaries & middle of tectonic plate because of buckling
  3. What are the three types of faults?

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    P waves, S waves, L waves
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    transform, convergent, divergent
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    strike-slip, reverse, normal
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    blocks, bombs, lapilli
  4. What type of boundaries do Earthquakes occur at?

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    strike-slip, reverse, normal
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    Incorrect
    transform, convergent, divergent
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    P waves, S waves, L waves
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    Incorrect
    blocks, bombs, lapilli
  5. What are S waves?

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    causes compression and contraction, can move through solids liquids and gases
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    moves rock side to side, travels through gases and solids, can't travel through liquids
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    Incorrect
    most destructive, also called L waves, last to arrive at seismograph, can be visible
  6. What are P waves?

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    Incorrect
    causes compression and contraction, can move through solids liquids and gases
    Correct
    Incorrect
    moves rock side to side, travels through gases and solids, can't travel through liquids
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    Incorrect
    most destructive, also called L waves, last to arrive at seismograph, can be visible
  7. What are surface waves?

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    causes compression and contraction, can move through solids liquids and gases
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    Incorrect
    moves rock side to side, travels through gases and solids, can't travel through liquids
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    Incorrect
    most destructive, also called L waves, last to arrive at seismograph, can be visible
  8. Pick the correct answer.

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    seismograph- instrument; seismogram- record created by seismograph
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    seismogram- instrument; seismograph- record created by seismogram
  9. What do seismograms tell us about earthquakes?

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    intensity
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    end time
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    start time and epicenter location
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    intensity and epicenter location
  10. Pick the correct answer.

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    epicenter- point inside Earth where Earthquake begins; focus- point on Earth's surface directly above Earthquake's starting point
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    epicenter- point on Earth's surface directly above Earthquake's starting point; focus point inside Earth where Earthquake begins
  11. Pick the correct answer.

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    Richter scale- numerals I to XII, effects vary from place to place, highest near epicenter; Modified Mercalli Intensity Scale- measures an Earthquake's strength, 10x larger per one increased unit
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    Richter scale- measures an Earthquake's strength, 10x larger per one increased unit; Modified Mercalli Intensity Scale- numerals I to XII, effects vary from place to place, highest near epicenter
  12. What's a volcano?

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    lava eruption
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    aareas of Earth's surface through which magma and gases pass
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    clouds of hot debris and ash shoot out
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    mountain producing lava
  13. Describe a nonexplosive volcanic eruption.

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    Rarer type of eruption; produces clouds of hot debris, ash, and gas; no lava flow; ash remains in atmosphere
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    Most common type; produces calm lava flows; occasional lava fountain if enough pressure is present
  14. Describe an explosive volcanic eruption.

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    Rarer type of eruption; produces clouds of hot debris, ash, and gas; no lava flow; ash remains in atmosphere
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    Most common type; produces calm lava flows; occasional lava fountain if enough pressure is present
  15. What's a volcanic vent?

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    body of molten rock deep underground that feeds a volcano
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    tube through which magma travels from magma chamber to surface
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    magma rises from chamber and spews onto surface
  16. What's a magma chamber?

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    body of molten rock deep underground that feeds a volcano
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    tube through which magma travels from magma chamber to surface
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    magma rises from chamber and spews onto surface
  17. What's a conduit?

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    body of molten rock deep underground that feeds a volcano
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    tube through which magma travels from magma chamber to surface
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    magma rises from chamber and spews onto surface
  18. What is lava?

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    liquid magma flows from vent to surface; associated with non-explosive
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    forms when magma is blasted into air and hardens; associated with explosive
  19. What is pyroclastic material?

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    forms when magma is blasted into air and hardens; associated with explosive
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    liquid magma flows from vent to surface; associated with non-explosive
  20. What's viscosity?

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    density of lava
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    type of lava
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    how lava flows
  21. Which are the types of high viscosity lava?

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    block & pahoehoe
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    aa & pillow
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    block & aa
  22. Which are the types of low viscosity lava?

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    block & pahoehoe
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    aa & pillow
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    block & aa
  23. List the order of pyroclastic material from largest to smallest.

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    lapilli, ash, blocks, bombs
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    ash, lapilli, blocks, bombs
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    bombs, blocks, ash, lapilli
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    blocks, bombs, lapilli, ash
  24. Which are types of volcanoes?

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    shield, cinder cone, composite
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    craters, calderas, lava plateaus
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    shield, calderas, composite
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    cindercone, craters, shield
  25. Which is NOT a way of predicting volcanic eruptions?

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    earthquakes
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    lava seeps out of fissures
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    sides of volcano bulge
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    unusually high ground temperature
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