By Friday, THE FIRST DAY OF THE ACTUAL FESTIVAL, Woodstock Ventures was out of food. Then they had the gall to ask their confined neighbors for sandwich donations. About 750,000, if they didn't mind. Some locals felt so sorry for the hungry kids that they did what they could to help.
Basaltic magma is hotter, denser, and less viscous than most other  types of lava. It is poor in silica and rich in iron and magnesium.  Eruptions involving it are typically â¦ non explosive or only mildly  explosive.It is less dense, more viscous, and cooler than most other types of  magma. It usually has a very high gas content, meaning that most  eruptions involving it will be highly explosive. Most  supervolcanoes are fed by rhyolitic magma.
Explain that viscosity of lava and magma will vary depending on the temperature and the composition. Explain that the parent material of the magma that forms shield volcanoes is generally basalt, while the parent material of the magma forming composite volcanoes is generally rhyolite (or andesite).6. Write on the board that rhyolite has 69% or more silica, while basalt has about 45-54% silica. Ola Ka Honua: Volcanoes Alive 293 Â©2001, 2007 UAF Geophysical Institute Teacher Instructions Volcano Models7. Using plates B and C, show how âmagmaâ of different viscosities creates different types of volcanoes:a. Poke the mustard bottle through the hole in plate B and squeeze. A large mound should form, representing a composite volcano.b.