Group+4+Question+2

2) What kinds of material do volcanoes erupt?
 * How does the amount of silica and gas in magma affect the force of a volcanic eruption? (Amount of gas dissolved in the magma, Thickness of the magma, Temperature of the magma, Silica content)
 * Explain the difference between the different types of rock fragments (ash vs. cinders vs. block)
 * Explain what kinds of gases escape from volcanoes.

Many different materials erupt from volcanoes such as:

-escaping gas bubbles pop making the magma tear apart

-Large pieces of lava erupt into the air cooling and hardening in the air

Tiny rock fragments form volcanic ash. There are a couple different types of this. Volcanic cinders are fairly large. The largest rock is volcanic bombs. Blocks are also very large and can be the size of houses.

Ash is created by rock fragments. Cinders have tiny air holes created by the escaping gases. The largest pieces are blocks and bombs.