ANSWER KEY: VOLCANOES Reading 1: Volcanic Eruptions ... - CAEL

5. Give an example of a possible medical consequence of exposure to volcanic activity.
(1)
One of :
(skin and lung) burns; asphyxiation; conjunctivitis; acute respiratory problems; thyroid cancer
6. Complete the chart with details about the various types of volcanoes.
(5)
Skill: S 22
Major Types of Volcanoes
Kind Composition Height Shape Example
Shield
Volcanoes
Cinder or
Scoria
Cones
Strato-
Volcanoes
or
Composite
Volcanoes
Fluid basaltic lava
flows and a small
percentage of
pyroclastic materials
Ejected lava
fragments
e.g., fine ash, bombs
(molten rock)
Two of:
• (Viscous) lava
• (fine) ash
• rocks
(2 points)
Relatively short A broad gentlysloping
cone with a
flattish domical top
30 to 400 metres • Cone-shaped
hill with steep
sides
(1 point)
(Often exceed)
2,500 m.
(1 point)
2
Nearly symmetrical
steep-sided cone
One of:
Iceland
The islands of the
Hawaiian chain/Hawaii
Mauna Loa
(1 point)
Volcanic field near
Flagstaff Arizona
Mt. Etna
Mt Fuji (in Japan)
Mt Vesuvius (in Italy)
7. Look at the chart above. What is the major difference between a cinder cone and a stratovolcano?
(1)
height
Skill: S 20
8. What is the definition of converging?
(1)
(The plates are) moving together
OR
Anything else that has this meaning
9. List two features of the Ring of Fire.
(2)
Two of:
• (Is a relatively narrow zone that) borders the Pacific Ocean
• Most stratovolcanoes are found there
• Has 452 volcanoes
• About ¾ of the world’s active and dormant volcanoes (lie within its sphere)
• Half of Ring of Fire is in Asia
Skill: U 17
Skill: U 12
Skills: U 18, I 10