Printer Friendly

Volcano season.

Seasons can affect your moods, but can they uncork a volcano? Geologist Ben Mason, from the University of Cambridge in England, tallied 300 years' worth of monthly eruptions from the world's most active volcanoes. Result: These sporadic scorchers explode more often from December through February.

Why? Some scientists think snow build-up in winter squishes the North Pole, making Earth's middle latitudes fatter. This tiny shape change relieves pressure, or weight, from volcanoes and may jolt an eruption--like uncapping a shaken bottle of soda.

Look at the graph below: Which season is least active?

FAST MOVERS: In an eruption, lava can travel up to 100 kilometers per hour (60 miles per hour)!

TIME TO EXPLODE

Mason's data (shown below) found a pattern in volcanic eruptions--something geologists have sought for over a century.
 Number of eruptions
 Season in the last 300 years

 Winter
 (Dec.-Feb.) 1,185

 Spring
 (Mar.-May) 1,117

 Summer
 (Jun.-Aug.) 1,013

 Fall
(Sept.-Nov.) 1,026

* indicates a gap in the scale

Note: Table made from bar graph.
COPYRIGHT 2004 Scholastic, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2004, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

Article Details
Printer friendly Cite/link Email Feedback
Title Annotation:Graph It!
Author:Bryner, Jeanna
Publication:Science World
Article Type:Brief Article
Date:Jan 12, 2004
Words:172
Previous Article:Five-second rule?
Next Article:Diet fact or fiction?
Topics:


Related Articles
Volcanoes under ice: recipe for a flood.
Hollywood erupts: catch the drama of red-hot lava in two new volcano flicks.
Fighting the volcano: a SWAT team of scientists tackles the ultimate challenge - an explosive volcano waking up from a 400-year sleep.
Island of fire: do volcanoes send out warnings before popping their lids? Scientists study toxic gases in search of answers.
Hot spots.
Mind the gap: inadequate monitoring at many U.S. volcanoes.
Volcanic hot spots: molten messengers from deep within the earth.
A volcano's deadly ash.
ABOUT THE VOLCANOES.

Terms of use | Privacy policy | Copyright © 2020 Farlex, Inc. | Feedback | For webmasters