WEEK 2 Activity 1: FILL ME Directions: Write your answer in the space provided. SIO2 Composition Magma Type Content Temperature Viscosity 1. Mafic 2. 1000-1200 BC Low 55-65% 3 Andesitic 800-1000 BC Intermediate 65-75% Felsic 4 650-800 BC 5.​