1. S TORY IN THE R OCKS By Anna Moorhead, Summer Hatton, and Gavin Jones

2. W EATHERING WEATHERING is a process that decomposes rock, and it occurs in place. CHEMICAL WEATHERING: involves a chemical change in some of the minerals of a rock PHYSICAL WEATHERING: involves physically breaking rocks into pieces. SEDIMENT is material eroded off of rocks that is moved by water, wind, or ice.

3. R OCK WEATHERED BY WIND HTTP :// IMAGES. TRAVELPOD. COM / USERS / KITKROZSER / 1.1243715284. WEATHERED - ROCK. JPG HTTP :// IMAGES. TRAVELPOD. COM / USERS / KITKROZSER / 1.1243715284. WEATHERED - ROCK. JPG http://www.incadventures.com/images/grand-canyon-skywalk-rainbow- 485.gif

4. E ROSION EROSION is when a loosened rock piece is moved by water, air, or ice. Moving water is its main agent. GRAVITY is the force that pulls things to the center of Earth. It causes eroded material to slide downhill.

5. T HE G RAND C ANYON — SCIENTISTS THINK IT WAS ERODED AWAY BY ROCK. HTTP :// WWW. INCADVENTURES. COM / IMAGES / GRAND - CANYON - SKYWALK - RAINBOW -485. GIF HTTP :// WWW. INCADVENTURES. COM / IMAGES / GRAND - CANYON - SKYWALK - RAINBOW -485. GIF

6. R OCK C YCLE The ROCK CYCLE is a model that explains how the different types of rocks are formed. IGNEOUS ROCKS are rocks formed above and below ground from magma or lava hardening SEDIMENTARY ROCKS are rocks that form from pieces of rock carried downstream, dropped, and harden into layered rock. METAMORPHIC ROCKS are rocks that have “morphed” after being under tons of pressure and heat underground.

7. D IAGRAM OF THE R OCK C YCLE HTTP :// WWW. ROCKSANDMINERALS 4 U. COM / IMAGES / R OCK - CYCLE - DIAGRAM - IM. JPG HTTP :// WWW. ROCKSANDMINERALS 4 U. COM / IMAGES / R OCK - CYCLE - DIAGRAM - IM. JPG

8. F OSSILS AND THE G EOLOGIC T IME S CALE FOSSILS are impressions/remains of a living creature pressed or buried in rock. The GEOLOGIC TIME SCALE is the method used to divide Earth’s natural history into parts—it’s determined by rock and fossil finds. THE LAW OF SUPERPOSITION states that in layers of undisturbed rock, the youngest layer is on top and the oldest is on the bottom.

9. F ISH F OSSIL AND R OCK L AYERS http://www.mr- damon.com/photo_album/ fossils/fish_fossil.jpg http://www.petrostrategies.org/ima ges/rock09.JPG

10. L INKS http://imnh.isu.edu/digitalatlas/geo/basics/diagrams.ht m www.fi.edu/fellows/felow1/rocks/create/igneous.htm http://education.usgs.gov/schoolyard/RockSedimentary. html www.fi.edu/fellows/fellow1/oct98/create/metamorph.ht m www.dictionary.com www.nature.nps.gov/geology/usgsnps/misc/gwearo.htm l www.watersheds.org/earth/erosion.htm www.wikipedia.org