The Rock Cycle Ms. Sikes
Rock Cycle Continual process by which new rock forms from old rock
3 types of rock 1. Igneous : formed from cooling magma 1.Can be intrusive (formed inside the earth or extrusive (formed on the surface of earth) 2. Sedimentary: formed from layers being smushed together (usually under water) 3. Metamorphic: changed by heat and pressure (usually formed under the earth’s surface)
Important Vocab Weathering: when water, wind, ice and heat break down rock Erosion: the process by which wind, water, ice or gravity transports soil and sediment from 1 place to another Depostion: when sediment is is deposited (laid down) somewhere
The Rock Cycle Can start at any point Must go in order
The Rock Cycle 1:Rock that is buried under ground melts because the center of the earth is so hot. 2: magma rises and cools off = solidifies into IGENOUS ROCK (this can happen during a volcanic eruption)
The Rock Cycle The Igneous rock is weathered away over time. Erosion takes the sediment to other places and deposits them somewhere else like the ocean The water compacts the pieces into SEDIMENTARY ROCK
The Rock Cycle When Earth’s plate’s collide, some of Earth’s crust is forced down. It’s HOT down there! The heat and pressure squeeze the rock and change it to METAMORPHIC ROCK. Then it starts all over again…
See Rock Cycle on page 362 Draw it in your notebook
Scenarios 1. Sediment is washed to the bottom of the ocean. What type of rock is formed?
2. Sedimentary rock falls through the cracks when the plates move and collide. What happens to this rock?
3. A volcano erupts and magma spills out. What will happen to this magma? What type of rock is formed?
4. Igneous rock undergoes lots of heat and pressure. What kind of rock does it turn in to?