Viscosity: A Physical Property of Liquid

Today in class we:
- Discussed the difference between physical and chemical properties
- Discussed the property of viscosity and the influences to the viscosity of lava: silica content and temperature

Worked on viscosity lab

Volcanoes!

Today in class we:

Reviewed Earthquake Quizzes
Watched news reels of Earthquake in Italy and Volcanic eruptions in Alaska (see National Geographic News)
Began discussion of volcanoes:
- Magma vs Lava
- Where do we find volcanoes?
- Physical vs Chemical properties of magma

Homework due next class:
Read Chapter 3 Section 1 and do the review questions on pg 85