Earthquakes+&+Volcanoes+Webquest


 * Earthquakes & Volcanoes **

Visit the sites listed on the Earth Science page of the Kid Zone!

Go to [|http://sciencespot.net] and click the Kid Zone graphic. Click on //Earthquakes &Volcanoes.// Click on Earthquakes for Kids (USGS)

 1. Search the "Cool Earthquake Facts" area to find the answers to these questions.
 * Earthquakes for Kids (USGS) **

(1) What was the largest earthquake in the U.S.? When, where, and what magnitude?

(2) What are moonquakes?

(3) What is a seiche?

(4) True or False? The San Andreas Fault is a single-continuous fault line that is more than 1300 km (800 miles) long, and in some spots is as much as 16 km (10 miles) deep.

(5) Which two states have the fewest earthquakes?

 Go to the “Anatomy of a Volcano” area to answer these questions. Click the “Next” button at the top to move to the next slide.
 * Roots of a Volcano **

1. Where does the molten rock, or magma, that is erupted come from?

2. How many active volcanoes are on Earth? Where are most of them located?

3. What plates surround the Pacific plate?

4. What happens at a subduction zone?

Close the interactive window and read through the article on the main page to answer these questions.

5. How many volcanoes are erupting every day?

6. How many active (or potentially active) volcanoes are in the United States? __Where are they located? List them below and provide numbers for each area.__

__**Virtual Cave (Look in the last section on the Earth Science Links page!) **  1. Where are the largest, lava tube caves found?

2. How are lava tube caves formed?

Most tubes form when fluid ___ __flows down the sides of__ ___, the upper layer begins to__ ___, and the lava beneath continues to__ in tubular conduits beneath the surface. Due to the insulating effects of the hardened lava above, molten lava is able to travel considerable __underground with very little cooling. In Hawaii, lava tubes have carried fluid lavas__ _ or more miles from their source. Tubes may also form when lava follows _ __or__ _ __on the surface, which then__ ___ over as lava accumulates along the top edges.

3. Which type of lava would most likely form lava tube caves: a’a or pahoehoe? Why?

4. What are lava balls? How are they similar to snowballs?

5. What are lava roses?

6. How are helictites different from regular stalactites?

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 * QUIA! Games **

1. Try the “Earthquake and Volcano Challenge” game! Play several rounds to test your knowledge of earthquakes and volcanoes. How did you do?

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2. Think you are ready for the big challenge? Try the “Earthquakes & Volcanoes Rags to Riches” game. How did you do?