ANSWER KEY: VOLCANOES Reading 1: Volcanic Eruptions ... - CAEL
ANSWER KEY: VOLCANOES Reading 1: Volcanic Eruptions ... - CAEL
ANSWER KEY: VOLCANOES Reading 1: Volcanic Eruptions ... - CAEL
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<strong>ANSWER</strong> <strong>KEY</strong>: <strong>VOLCANOES</strong><br />
<strong>Reading</strong> 1: <strong>Volcanic</strong> <strong>Eruptions</strong> (25 minutes/25 points)<br />
Read the questions first and then look for the information in the article. You do not need to write<br />
in complete sentences.<br />
1. Where would you find this reading? Check (√) one.<br />
(1)<br />
______ textbook<br />
__√___ government document<br />
______ academic journal<br />
______ novel<br />
2. In which sections would you find the answers to the following questions? Write the number of the<br />
section next to the question.<br />
(5)<br />
Skills: P 1, U 17, U 18<br />
__IV___ Where are volcanoes often situated?<br />
__II____ What is an example of a cinder cone?<br />
__I ____ What is the definition of the word “volcano”?<br />
__V___ What does the <strong>Volcanic</strong> Explosivity Index measure?<br />
__VI____ How long has Mount Etna been erupting?<br />
3. What are the two main reasons that some volcanic eruptions turn into major human catastrophes?<br />
(2)<br />
• Settlement in risk-prone areas<br />
Skills: I 7<br />
• Human error<br />
4. List 3 specific effects of volcanic activity since the 1980s.<br />
(3)<br />
• (More than) 29,000 people killed<br />
• (More than) 1 million people displaced<br />
• $2,870,769,000 of economic damage<br />
½ point for each of: people killed; people displaced; economic damage<br />
1<br />
Skill: I 5<br />
Skill: I 10
5. Give an example of a possible medical consequence of exposure to volcanic activity.<br />
(1)<br />
One of :<br />
(skin and lung) burns; asphyxiation; conjunctivitis; acute respiratory problems; thyroid cancer<br />
6. Complete the chart with details about the various types of volcanoes.<br />
(5)<br />
Skill: S 22<br />
Major Types of Volcanoes<br />
Kind Composition Height Shape Example<br />
Shield<br />
Volcanoes<br />
Cinder or<br />
Scoria<br />
Cones<br />
Strato-<br />
Volcanoes<br />
or<br />
Composite<br />
Volcanoes<br />
Fluid basaltic lava<br />
flows and a small<br />
percentage of<br />
pyroclastic materials<br />
Ejected lava<br />
fragments<br />
e.g., fine ash, bombs<br />
(molten rock)<br />
Two of:<br />
• (Viscous) lava<br />
• (fine) ash<br />
• rocks<br />
(2 points)<br />
Relatively short A broad gentlysloping<br />
cone with a<br />
flattish domical top<br />
30 to 400 metres • Cone-shaped<br />
hill with steep<br />
sides<br />
(1 point)<br />
(Often exceed)<br />
2,500 m.<br />
(1 point)<br />
2<br />
Nearly symmetrical<br />
steep-sided cone<br />
One of:<br />
Iceland<br />
The islands of the<br />
Hawaiian chain/Hawaii<br />
Mauna Loa<br />
(1 point)<br />
<strong>Volcanic</strong> field near<br />
Flagstaff Arizona<br />
Mt. Etna<br />
Mt Fuji (in Japan)<br />
Mt Vesuvius (in Italy)<br />
7. Look at the chart above. What is the major difference between a cinder cone and a stratovolcano?<br />
(1)<br />
height<br />
Skill: S 20<br />
8. What is the definition of converging?<br />
(1)<br />
(The plates are) moving together<br />
OR<br />
Anything else that has this meaning<br />
9. List two features of the Ring of Fire.<br />
(2)<br />
Two of:<br />
• (Is a relatively narrow zone that) borders the Pacific Ocean<br />
• Most stratovolcanoes are found there<br />
• Has 452 volcanoes<br />
• About ¾ of the world’s active and dormant volcanoes (lie within its sphere)<br />
• Half of Ring of Fire is in Asia<br />
Skill: U 17<br />
Skill: U 12<br />
Skills: U 18, I 10
10. What magnitude were the following eruptions?<br />
(1)<br />
Mount Pinatubo: ___6___ (½ point)<br />
Nevado del Ruiz: ___3___ (½ point)<br />
11. Why are progressively more people living on the sides of volcanoes?<br />
(2)<br />
• Beauty of the landscape<br />
• Lack of living space<br />
12. According to the reading, which of the following statements is most correct? Check (√) one.<br />
(1)<br />
Skill: I 11<br />
____ A high level volcanic eruption can cause the most danger for people living nearby.<br />
____ A low level volcanic eruption can cause the most danger for people living nearby.<br />
__√_ High or low level volcanic eruptions can cause major danger for people living nearby.<br />
STOP!<br />
THIS IS THE END OF READING 1<br />
3<br />
Skill: P 3, U 13<br />
Skill: I 9, U 17
Listening 20 minutes/35 points<br />
During this part of the test you will hear a lecture about Volcanoes. The lecture will be played only<br />
once. You must answer the questions while you are listening to the lecture. The questions follow the<br />
sequence of the lecture. Do not stop to rewrite your answers during the listening. At the end of the<br />
lecture, you will have 5 minutes to go over your answers. Take 3 minutes now to read over the<br />
questions before listening to the lecture.<br />
<strong>ANSWER</strong> THESE QUESTIONS WHILE LISTENING TO THE LECTURE<br />
1. Which issue mentioned last class will be today’s topic? Check (√) one.<br />
(1)<br />
______ Volcanoes<br />
______ Background information on volcanic eruptions<br />
___√__ Human settlements on and near volcanoes<br />
2. Name the focuses of today’s lecture.<br />
(2)<br />
• Why people live near/on volcanoes<br />
• Hawaii<br />
3. How many Sicilians live on the flanks of Mount Etna?<br />
(1)<br />
1 in 5<br />
Must have complete answer for 1 point. No ½ marks.<br />
4<br />
Skill: I2<br />
Skill: I 3<br />
Skill: I 4
4. Complete the flow chart to show how a volcanic eruption leads to fertile soil.<br />
(5)<br />
Release of nutrients and<br />
minerals into soil<br />
(1)<br />
<strong>Volcanic</strong> eruption<br />
↓<br />
Materials such as<br />
ash(0.5), lava & rock(0.5)<br />
emitted<br />
(1)<br />
↓<br />
Weathering: exposure to<br />
atmosphere causes materials to<br />
disintegrate and decompose<br />
(1)<br />
↙ ↘<br />
Can hold more oxygen<br />
underground<br />
5<br />
Soil becomes very porous<br />
↙ ↘<br />
↘ ↙<br />
Fertile soil<br />
Skill: U 13<br />
Can hold water (1) without<br />
drowning roots (1)<br />
(2)
5. Complete the chart about volcano-related jobs.<br />
(7)<br />
Jobs in the Vicinity of Volcanoes<br />
Field of work Volcano’s contribution Types of Jobs Places<br />
Agriculture Fertile soil; melting snow One of:<br />
Mt Etna – grow olives and<br />
Farmer<br />
Truck driver<br />
(1)<br />
fruit<br />
Tourism Snow; spectacular scenery; unique In:<br />
Iceland.<br />
features like lava flows and geysers Two of: hotels, Yellowstone National Park<br />
restaurants, in U.S. receives about 3<br />
shops, national<br />
parks<br />
(2)<br />
million visitors a year<br />
Mining Two of (0.5 each):<br />
Copper, gold, silver, lead and zinc<br />
(1)<br />
miner Mt. St. Helens, U.S.<br />
Industry • Lava rock used in construction of<br />
New Zealand – basalt and<br />
roads and buildings;<br />
scoria used for building<br />
• Ash used in making abrasive and<br />
cleansing agents;<br />
• Sulphur in medicine &(making of)<br />
matches.<br />
(2)<br />
airport buildings & roads<br />
Electricity Geothermal energy One of: Italy, New<br />
Zealand, U.S., Iceland<br />
(1)<br />
6. List two beneficiaries of high employment.<br />
(2)<br />
Two of:<br />
Local economy (1) ) OR Economy (1)<br />
National economy (1) )<br />
Country<br />
Government<br />
6<br />
Skill: S 21<br />
Skill: U 16
7. Explain what the lecturer means when she says people get blasé about volcanoes.<br />
(2)<br />
Idea of being unconcerned/relaxed (1)<br />
Because: Idea of volcano does not erupt frequently/people do not believe volcano<br />
will erupt in their lifetime/do not believe catastrophe will happen to them/an<br />
eruption will not be too bad/think early warning system will give them time to leave (1)<br />
8. What are the chances of being killed by a volcano?<br />
(1)<br />
(About) 1 in 80,000<br />
Must have complete answer for 1 point. No ½ marks.<br />
9. List two of the reasons with which the lecturer supports the statement that people are apathetic<br />
about leaving a volcanic area.<br />
(2)<br />
Skill: I 6<br />
• People are born in volcanic areas<br />
• Families may have lived there for generations<br />
• Only lifestyle they have known<br />
• Would be an effort to uproot oneself and move elsewhere<br />
10. What is the last reason the lecturer gives for not moving away from a volcano.<br />
Skill: U 16<br />
(1)<br />
Lack of choice OR do not have the economic resources to move OR No money to finance a move<br />
11. Fill in the chart with the information about each of the following Hawaiian volcanoes.<br />
(5)<br />
Skill: S 21<br />
Mauna Loa • Has erupted repeatedly in the last 100 years<br />
• 1984 eruption: (caused rivers of) lava to reach within 6 km of city of Hilo<br />
(1)<br />
Kilauea • Has erupted repeatedly in the last 100 years<br />
• (Has been continuously) erupting since 1983<br />
• In 1990,lava covered town of Kalapana to depth of over 15 metres: residents<br />
escaped but homes incinerated<br />
• 1983-1991 damage: 181 houses and 12 km of highway destroyed<br />
• Health effects from vog: respiratory (problems)<br />
(3)<br />
Hualalai • Last erupted in 1801<br />
• Expected to erupt in coming decades<br />
(1)<br />
Loihi Still 3,000 feet below ocean surface but predicted to form another island<br />
7<br />
Skill: P 1<br />
Skill: I 4
12. Why do the people of Hawaii feel safe living on volcanoes?<br />
(1)<br />
<strong>Eruptions</strong> not explosive (in nature)<br />
OR<br />
<strong>Eruptions</strong> are gentle outflows of very fluid lava<br />
13. What does the lecturer find more troubling about the building of homes on the southwest flank of<br />
Mauna Loa since a 1950 eruption?<br />
(2)<br />
Skill: U 12<br />
Two of:<br />
• Built (on a rift zone) where eruptions have occurred in the past<br />
0.5 = Built on a rift zone<br />
• directly downslope from potential vents<br />
• lava (from vents) flow right into homes (and other buildings)<br />
14. What was the government’s response to the construction of a residential area on the southwest<br />
flank of Mauna Loa? Check (√) one.<br />
(1)<br />
_____ Thought it didn’t make much sense<br />
Skill: U 11<br />
_____ Thought it was a good idea<br />
_____ Was happy people wanted to live there<br />
__√__ Did nothing<br />
15. Why is the U.S. government monitoring and predicting volcanic activity in Hawaii?<br />
(1)<br />
• To provide timely warnings to local officials and to the public<br />
• To help guide land-use planning decisions<br />
• To determine when people need to be evacuated or roads closed<br />
16. Why is the task of lessening the risk from volcanic activity becoming increasingly difficult in Hawaii?<br />
(1)<br />
Population growing<br />
Skill: U 17<br />
STOP!<br />
THIS IS THE END OF THE LISTENING<br />
8<br />
Skill: U 17<br />
Skill: U 15
<strong>Reading</strong> 2 (25 minutes/25 points)<br />
Read the questions first and then look for the information in the article. You do not need to write<br />
in complete sentences.<br />
1. In which volcanic zone are the volcanoes mentioned in the first four paragraphs located?<br />
(1)<br />
Ring of Fire<br />
2. Complete the chart with details about specific volcanoes.<br />
(7)<br />
Name of<br />
Volcano<br />
Mt. St.<br />
Helens,<br />
United<br />
States<br />
Nevado del<br />
Ruiz,<br />
Colombia<br />
Mt.<br />
Pinatubo,<br />
Philippines<br />
Mt.<br />
Merapi,<br />
Indonesia<br />
Date of<br />
Eruption<br />
May 18,<br />
1980<br />
Nov. 13,<br />
1985<br />
Previous<br />
<strong>Eruptions</strong><br />
June 1991 450 years<br />
(earlier)<br />
Oct-Nov.<br />
2010<br />
Human<br />
Casualties<br />
1831-1857 59 (people)<br />
dead<br />
(1)<br />
1845 • 23,000<br />
killed<br />
(½ point)<br />
• 5,000<br />
injured<br />
(½ point)<br />
(1)<br />
2006<br />
Has<br />
regularly<br />
erupted<br />
since 1548<br />
(1)<br />
847 killed<br />
100,000<br />
homeless<br />
353 killed<br />
9<br />
Property Damage Main <strong>Volcanic</strong><br />
sources of<br />
casualties and<br />
damage<br />
• 200 homes destroyed<br />
• 400 sq. m. of timberrich<br />
land decimated<br />
• $2.7 billion<br />
Buried and destroyed town<br />
of Armero (73 km. from<br />
summit)<br />
$200 million damage to<br />
property<br />
Two of (½ point each):<br />
• (Almost) $½ billion<br />
• 4,979 homes destroyed<br />
• 70,257 homes damaged<br />
(1)<br />
One of:<br />
• (Estimated in the)<br />
billions<br />
• (Over) $100 million to<br />
agriculture<br />
(1)<br />
Skill: I 8<br />
Skill: S 22, P 4<br />
Avalanche of rock,<br />
pumice and ash<br />
(poured down<br />
mountain)<br />
Lahar/river of<br />
mud & debris<br />
0 = Plinian<br />
eruption of mixed<br />
dacite & andesite<br />
tephra<br />
0 = flooding<br />
(1)<br />
Lahars<br />
One of:<br />
• (Flows of)<br />
pyroclastic<br />
material<br />
• (Rivers of<br />
heated) mud<br />
½ point = ash<br />
(1)
3. What frequently causes more casualties than necessary when a volcano erupts?<br />
(1)<br />
(It is) human behaviour (that frequently) causes more casualties than necessary.<br />
4. What period of time was there between the beginning of volcanic activity at Mt. St. Helens and its<br />
eruption?<br />
Skill: U 15<br />
(1)<br />
March 1980 to May 18, 1980 OR 2 months<br />
5. List two examples of unwise human behaviour at Mount St. Helens prior to the eruption.<br />
(2)<br />
Skill: U 13<br />
Two of:<br />
• Homes built around the base of the mountain<br />
• After evacuation, homeowners were pressuring the authorities to lift the evacuation order<br />
• Logging companies had successfully lobbied (the local government) to make the restricted area<br />
smaller (than recommended by the U.S. Geological Survey).<br />
6. Complete the chart:<br />
(4)<br />
(1)<br />
The Armero Tragedy: Human Errors<br />
Scientists Governmental officials or politicians<br />
• Did not read signals (that the<br />
volcano was about to explode well<br />
enough)<br />
• Could not say exactly when eruption<br />
would occur<br />
(3)<br />
• Did not take warnings seriously<br />
• Politicans in Colombian Congress criticized the<br />
scientists and civil defence authorities for<br />
scaremongering with hazard maps<br />
• Local officials failed to give warnings (as to<br />
seriousness of situation)<br />
• Mayor of Armero sought to reduce level of<br />
anxiety after ash eruption on November 13<br />
• Local and national authorities worried about<br />
monetary consequences of preventative<br />
measures such as a large-scale evacuation<br />
• No evacuation<br />
• Difficult to accept that a dangerous eruption<br />
might occur (last eruption 140 years before)<br />
10<br />
Skill: P 3<br />
Skill: S 22
7. What assumption might have been made by land-use planners from knowledge of the route of the<br />
1595 and 1845 lahars?<br />
(2)<br />
Skill: S 20<br />
Idea that any future lahar would also probably follow that route<br />
1 point: A land-use plan forbidding construction of communities in the path of previous lahars<br />
might have saved many lives.<br />
8. According to Russian volcanologists, what is the meaning of a yellow warning after a move from a<br />
period of heightened volcanic activity?<br />
Skill: S 21, I 10<br />
(1)<br />
1 point = <strong>Volcanic</strong> activity has decreased significantly but continues to be closely monitored for<br />
possible renewed increase.<br />
½ point = <strong>Volcanic</strong> activity has decreased significantly<br />
0 point = Continues to be closely monitored for possible renewed increase.<br />
9. Are scientists able to predict the exact date, magnitude or duration of a volcano? Circle one.<br />
(1)<br />
YES NO<br />
Skill: U 17<br />
10. Why are many of the world’s active volcanoes not consistently monitored?<br />
(1)<br />
Lack of means OR Lack of money<br />
11. What was reported in the Journal of the National Cancer Institute?<br />
(1)<br />
People living near Etna were more prone to thyroid cancer<br />
12. Choose the best answer. Check (√) one.<br />
(1)<br />
____ It is safe to live more than 100 km from a volcano<br />
____ It is safe to live more than 10 km from a volcano<br />
__√_ Each volcano must be assessed individually to determine the safe zone<br />
13. In your own words, explain why Central America is more likely than Indonesia to have a large<br />
number of fatalities from even a small volcanic eruption.<br />
Skill: S 23<br />
(2)<br />
Idea that Central America has more volcanoes near urban areas (1) – urban areas are dense/have a<br />
lot of people (1)<br />
0 points = entirely copied or almost entirely copied<br />
11<br />
Skill: I 9<br />
Skill: U 18<br />
Skill: S 19