MS. UNDERBERGERMARCH 9 , 2015

OPEN UP YOUR WORKBOOK TO PAGE 64

The Rock Cycle

What is the Rock Cycle?

The rock cycle is a series of processes that occur on the Earth’s surface and in the crust and mantle that slowly change rocks from one kind to another

Plate tectonics are responsible for the rock cycle

How do rocks change?

Rocks can change through 5 processes1. Weathering and erosion2. Heat and pressure3. Melting4. Volcanic Activity5. Deposition, Compacting, Cementation

1. Weather and Erosion

Weathering- the effects of freezing and thawing, plants roots, acid, and other forces on rock

Erosion- the process by which running water, wind, or ice carry away bits of broken rock

Where does it fit in the cycle? when igneous rock, metamorphic rock, and

sedimentary rock weather and erode, sediment is formed

2. Heat and Pressure

Heat and pressure are forms of energy that can change the rock.

Where does it fit in the cycle? Igneous rock and sedimentary rock need heat

and pressure to become metamorphic rockWhen rock loses heat, it can create igneous

rock

3. Melting

Melting causes rock to turn from a solid into liquid magma and lava

Where does it fit in the cycle? Metamorphic rock, igneous rock, and

sedimentary rock all melt to become magma and lava

4. Volcanic Activity

Volcanic activity involves the movement of lava and magma to turn a liquid to a solid.

Where does it fit in the cycle? When volcanic activity occurs, igneous rock

is formed

5. Deposition, Compaction, and Cementation

Deposition is the process by which sediment settles out of the water or wind carrying it and falls

Compacting: the process of pressing sediments together

Cementation: dissolved minerals crystallize and glue particles of sediment together

Where does it fit in the cycle? Sediments need deposition, compaction, and

cementation to become sedimentary rock

Videos

Jelly Bean Rock Cyclehttps://www.youtube.com/watch/?v=pm6cCg_Do6k

Rock Cycle Animationhttp://www.schooltube.com/video/503ca205aae459f47494/

Rock Cycle and Plate Tectonics

Moving plates cause magma to form, which creates igneous rocks!

The collision of continental plates can move a mountain range, causing weathering and erosion. This causes sedimentary rock!

The collision of continental plates can push rocks beneath the surface. The heat and pressure pushing the rocks beneath the surface can create metamorphic rock!