1. Ch 5-6, 17-18
Test Review

2. Rock Types Metamorphic-formed w/ heat & pressure (mica, slate)
Sedimentary-layered dirt, compacted (limestone, sandstone)
Igneous-cooled Magma (lava rocks-granite, basalt)
Can change into the other (p. 139)

3. Characteristics Color-most common Streak-powder residue
Texture (rough, smooth)
Luster (how shiny)
Density (how heavy)
Hardness (Moh’s scale up to 10)

4. Ch 17
Pangaea-1 landmass broke apart thru Continental Drift (Alfred Wegener)
Laurasia & Gondwanaland & Panthalassa (ocean)
Evidence-fossils, plants, etc
Sea Floor Spreading-magma rises & cools to form new land-continuous

5. Plate Tectonics Occur at plate boundaries Divergent-moves apart
Convergent-collides
Subduction-overlaps causes a deep trench
Transform-slide side by side
New land can form, earthquakes, tsunamis, etc as results

6. Volcanoes Shield Cinder-Cone Composite
Magma (basaltic, andesitic, rhyolitic)
Basaltic-forms intrusive rocks (inside)
Rhyolitic- forms extrusive rocks (on surface)

7. Volcanoes Cont’d Ring of Fire-chain of volcanoes
Hot Spots-active volcanoes not at plates
Black Smokers-under H2O volcanoes
Calderas-craters
Pyroclastic flow-fast moving, dangerous