Global Science: Reading Response Prompts

ICS Book, page 33: Volcanic Hazards: Airborne Debris

Answer these on your own SENBP. Do not copy the question. Just write the answers.

Use complete sentences, unless your teacher tells you otherwise.

¨ Write your answer to the question on page 33.

¨ Do Investigate on page 34. Answers for Part 1, 2, 3, and 4.

¨ Now turn to page 36. Read “Digging Deeper,” and answer these questions.

1. Define the following in your own words: tephra, volcanic bombs, lapilli and ash bombs.

2. What determines the distance each of the tephra travels?

3. How long did it take Mt Saint Helens’ ash to reach New England?

4. Shoeboxes and bedrooms. What do these have to do with volcanoes?

5. List 3 hazardous results of tephra falling to the ground. Give the reason for each hazard.

6. What is lahars and why is it a concern?

7. What two factors of magma are most important?

8. What determines the viscosity of the magma?

9. Why are volcanoes with more viscous magma more likely to have explosive eruptions?

10. Most people killed in the 7 most deadly volcanic eruptions since 1500AD were not caused by the actual eruption. What did cause the deaths of those killed and how were those causes related to the volcanic eruption?

11. The word tsunami appears in this reading. How is it defined?

Look at Figure 3 (page 37). Answer questions 12-13.

12. Contrast this VEI with the one in your Captain’s Log on page 12 of Unit 2. You need at least two sentences here.

13. Explain why the eruptions of VEI 6 and 7 occur so infrequently.

Ask your teacher if you are supposed to do anything on page 29.