Ch 22.6 Study Guide Volcanoes
CPC
Ch. 22.6: Volcanoes
Vocabulary: volcano, magma chamber, pipe, vent, crater, caldera, silica, hot spot, shield
volcano, cinder cone, composite volcano, batholiths, sill, dike, volcanic neck.
 How do volcanoes influence climate?
 How do volcanoes and plankton cycle carbon between the spheres and
regulate temperatures?
 How do volcanic eruptions in the geosphere affect the atmosphere,
hydrosphere, and biosphere?
 Where do most volcanoes occur?
 Why do volcanoes erupt? Describe process (Why does magma rise to the
surface?)
 Volcanic structures: magma chamber; caldera; central pipe
 Explain 3 ways can volcanoes form? (Divergent plate boundaries.;
Convergent plate boundaries; hot spots)
 What is a hot spot? Why are eruptions quiet at hot spot volcanoes?
 How were the Hawaiian islands formed?
 Quiet vs. Explosive eruptions (silica; water; temps.; & viscosity)
 Volcano types: shield; composite; cinder cone; seamount
o Pick out type from picture or description
o Associate type of eruption with each type of volcano
o Identify location where each can be found
o Describe/ Identify dangers posed by volcanic eruptions to humans and
ecosystems.
 Identify & describe non-volcanic igneous features: lava plateaus
(extrusive); sills; dikes; batholiths; volcanic necks or plugs (all intrusive)
Volcanoes Study Guide
Volcanoes in the Earth System
Volcanoes in the Earth System
Complete the diagram below with words to explain how carbon is cycled from the atmosphere
to the biosphere to the geosphere by volcanoes.
Atmosphere
Volcanoes release …
Biosphere:
Plankton …
Geosphere:
Eventually
rock
containing
carbon is …
Geosphere:
Plankton die and …
Volcanoes & the Atmosphere
1. Volcanoes are a part of the (ATMOSPHERE, BIOSPHERE, GEOSPHERE,
HYDROSPHERE).
2. Volcanoes affect the atmosphere by releasing gases like (OXYGEN; CARBON
DIOXIDE; OZONE).
a. Greenhouse gases released by volcanoes cause the atmosphere to
(WARM UP; COOL DOWN; STAY THE SAME).
b. Greenhouse gases work by (ABSORBING SOLAR RADIATION;
TRAPPING HEAT FROM EARTH’S SURFACE; RELEASING LIGHT
ENERGY).
Volcanoes & the Biosphere
3. Plankton (TAKE IN/RELEASE) carbon dioxide. This results in a(n)
(INCREASE/DECREASE) in temperatures.
4. The carbon dioxide is used by plankton to (MAKE FOOD/MAKE
SHELLS/RESPIRE).
5. When plankton die, the fall to the ocean floor and become carbonate rock
or the (ATMOSPHERE/BIOSPHERE/GEOSPHERE/HYDROSPHERE).
6. Carbonate rock is subducted at plate boundaries. The carbon in the rock is
changed to (CARBON ORGANISMS/CARBON DIOXIDE/CARBONIC ACID)
that is released by volcanoes.
Volcanoes & the Hydrosphere
7. Volcanic gases make ocean water (MORE/LESS) acidic. This
(BUILDS/DISSOLVES) the shells of organisms.
Volcano Formation
8. Volcanoes form when rock melts and rises. Magma rises to the surface
because it is hot and (LESS/MORE) dense than the surrounding rock.
9. The RING of FIRE is a (SUBDUCTION ZONE/SEA-FLOOR SPREADING
CENTER/HOT SPOT) along the edge of the Pacific Plate.
10. Volcanoes that form at a plate boundary where two continental plates pull
apart, form by: (SUBDUCTION ZONE/RIFTING/HOT SPOT)
11. Volcanoes that form when a deep plume of magma from the mantle rises
to the surface and melts the crust above it, form over (SUBDUCTION
ZONE/SEA-FLOOR SPREADING CENTER/HOT SPOT).
12.
Most volcanoes form (in the middle of plates/at plate boundaries).
13. Katmal is a volcano formed by (SUBDUCTION ZONE/SEA-FLOOR SPREADING
CENTER/RIFTING/a HOT SPOT).
14.
Cape Verde is a volcanic island formed by (SUBDUCTION ZONE/SEA-FLOOR
SPREADING CENTER/a HOT SPOT).
15. Underwater volcanoes along the Mid-Ocean Ridge form by (SUBDUCTION
ZONE/SEA-FLOOR SPREADING CENTER/HOT SPOT).
B
A
C
Identify the volcanoes formed by:
16. Rifting: (A, B, C).
17. Subduction: (A, B, C).
18. Hot spot: (A, B, C).
19. Which volcano forms by hot magma deep in Earth’s crust rising to the surface? (A, B, C).
20. Which volcanoes include continental crust in the melt? (A, B, C).
Hot Spot Volcanoes:
A
B
21. Which volcano is the youngest in age? (A,B,C).
22. Describe how this chain of volcanoes form.
C
Volcano Types: Match the volcano type to its description.
Shield
Composite
Cinder Cone
23. Underwater volcano
Seamount
___________________________________
24. Large, broad or wide, gently sloping
___________________________
25. Tall and steep; Explosive eruptions
___________________________
26. Small, simple, steep sided, and usually only erupt one time
______________
27. Hawaiian volcanoes________________________
28. Ring of Fire or Subduction volcanoes
29. Quiet eruptions of liquid lava
_________________________
__________________________
Quiet vs. Explosive Eruptions: Place the following terms in the correct column.
Magma high in silica
Magma low in silica
Ash, gas, & rock
Mantle rock in melt
Hawaii
Hot temperature magma
Cool temperature magma
Pyroclastsic
Shield volcano
Subduction zone (Ring of Fire)
Quiet Eruption
Viscous magma
Liquidy lava
Continental crust in melt
Composite volcano
Explosive Eruption
Volcano Hazards:
Describe three ways in which volcanoes can cause harm to humans or ecosystems.
__________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
Intrusive Volcanic Features
Label the following features in the diagram below:
Batholith
Sill
Volcanic Dike