Eruption

1. At the beginning of the passage (paragraph 8), it says that VDAP members debated whether the alert should be moved to level three. What does the word debated mean?

• demanded
• persuaded
• protested
• discussed

2. Which statement best describes volcanoes? (page 186)

• Volcanoes are difficult to predict because they don’t erupt in a straight, orderly progression.
• Volcanoes are easy to monitor because every one follows the same order of events.
• Volcanoes usually occur in remote places, so they rarely affect humans.
• Volcanoes always cause typhoons before they erupt.

3. Why did Andy watch the lights of the airstrip? (Page 193)

• The lights could measure the height of the smoke plumes.
• If the lights went out, he knew that he needed to run to safety.
• He knew that the lights controlled the military television and radio.
• The lights would indicate if there was a traffic jam during the evacuation.

4. Why did the instruments flatline? (Page 193)

• The volcano was about to erupt.
• The seismograph needles were banging.
• The eruption had destroyed the monitoring stations.
• The wind and rain of the typhoon had moved over the island.

5. How is the passage organized?

• It lists the steps the military told the scientists to take. Also known as Sequence.
• It tells the events the scientists faced in the order that they occurred. Also known as Chronological Order.
• It explains the problems the scientists experienced and how they solved them. Also known as Problem and Solution.
• It compares and contrasts how the scientists reacted with how the military reacted. Also known as Compare and Contrast.

6. Mount Pinatubo was the second largest eruption in the twentieth century. What other volcanic eruption that occurred in the twentieth century was mentioned in the text? (Page 185)

• Mount Vesuvius
• Mount St. Helens
• Mount Tambora
• Mount Pelée
• Mount Ruiz

7. In the sidebar Looking For Lumps, what is the main idea of the last paragraph in that sidebar? (Page 188)

• The instruments and things scientist do to measure the lumps and bulges.
• How the lump and bulges are measured.
• The bulges and lumps can be measured using satellite radar.
• The lumps and bulges can be measures by careful surveying.

8. What is a typhoon? (Page 190)

• A dangerous, powerful tropical storm occurring in the western Pacific or Indian Oceans.
• A small storm that occurs in the Philippines.
• A piece of equipment used to measure volcanic activity.
• A wild and crazy hair band from Canada.

9. What is a seismograph used for? (glossary)

• Instrument used to measure and record typhoons.
• Instrument used to measure and record details about earthquakes.
• Instrument used to measure the amount of lava in a volcano.
• Instrument used to detect smoke entering the atmosphere.

10. What is a reservoir? (glossary)

• It is a tropical storm found only in the western Pacific and Indian Ocean.
• It is a place where a supply of something is collected.
• It is an instrument to detect earthquakes.
• It is a mountain range found deep in the jungle of the Philippines.