CyberHunt teacher's guide - questions and web sites on volcanos

Volatile Volcanos

Start your online tour of fearsome firespouting volcanos at www.scholastic.com/instructor Write your answers in the spaces below or on a separate sheet of paper.

1. A volcanic eruption occurs when pressures in the earth force hot liquefied rock called to ---------- the volcano's surface.

www.nationalgeographic.com/eye/volcanoes/phenomena.html

2. What is the name of the largest volcano on earth? In which state is it found? ---------- , ---------- http://volcano.und.nodak.edU/vwdocs/volc_images/north_america/hawaii/ mauna_loa.html

3. There are five major kinds of volcanos, including the lava dome, the stratovolcano, and the caldera. How is the caldera formed? ---------- ----------

http://vulcan.wr.usgs.gov/Photo/Pictograms/volcano_types.html

4. Prior to erupting, a volcano can release gases and produce small ---------- www.learner.org/exhibits/volcanoes/forecast.html

5. How many active volcanos are there in the world?

a. 50 b. 100 c. More than 500 d. More than 2,000

www.fema.gov/kids/volfactS.htm

6. Earth is not the only volcanic planet. In fact, the planet in our solar system with the most volcanos is ----------

http://volcano.und.nodak.edu/vwdocs/planet_volcano/venus/intro.html

7. Scientists can learn about a live volcano by sending ---------- like Dante II deep into its crater.

http://volcano.und.nodak.edu/vwdocs/vw_news/dante.html

8. A volcanic eruption causes serious environmental hazards. Name two of these hazards. ----------, ----------

www.learner.org/exhibits/volcanoes/judgehaz.html

Volatile Volcanos

Teach your students about the world of the volcano with Instructor's online CyberHunt at www.scholastic.com/instructor Suitable for middle and upper graders, the CyberHunt is a great individual or group activity. See the CyberHunt kids' reproducible on the opposite page.

Answers:

1. Magma

2. Mauna Loa, Hawaii

3. A caldera is a large depression caused by the collapse of a volcano.

4. Earthquakes

5. c. More than 500

6. Venus

7. Robots

8. Two of the following: lava flow, falling ash, glowing avalanches, mud and debris flow, climate changes, atmospheric shock waves, tsunamis, volcanic earthquakes, or the release of suffocating gases.

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