1. Each day you will write down 2 – 4 definitions. You will be quizzed on these terms on Thursday of THIS WEEK!

2. 2. Viscosity A substance’s resistance to flow  An area of volcanic activity in the center of a lithospheric plate

3.  violent, explosive eruptions where tephra is blown into the atmosphere.  anything blown out of a volcano 3. Pyroclastic

4.  Huge quantities of rock, glass and gas are blown high into the air  Explosions of gas and ash from the side of the volcano; destroys part of the mountain 5. Ash fall 6. Lateral blast

5.  Molten rock that has reached Earth’s surface.  Molten rock that is underground (HAS NOT REACHED THE SURFACE!) 7. Lava 8. Magma

6.  Mudslide created when it rains after an ash fall.  A volcano that is not likely to erupt again. 9. Lahar 10. Extinct

7.  A “sleeping” volcano that will likely erupt again in the future.  A volcano that has erupted recently and will continue. 11. Dormant 12. Active