Rock Cycle


Objectives

Students will be to describe how water, air and heat effect the formation of rocks and soil.
Students will be able to identify the stages of a rock cycle.
Students will be able to communicate what force created change to a rock.


Discussion:

Rocks are any solid mass of mineral or mineral-like matter occurring naturally as part of our planet. They come in different colors, shapes, textures, and sizes. Rocks are found everywhere!
There are different types of rocks
  • Igneous rock is formed by the crystallization of molten magma.
  • Sedimentary rock is formed from the weathered products of preexisting rocks that have been transported, deposited, compacted, and cemented.
  • Metamorphic rock is formed by the alteration of pre-existing rock deep within Earth (but still in the solid state) by heat, pressure, and/or chemically active fluids.
Rock changes is caused by a variety of circumstances
  • weather and erosion- water, wind, and sun's heat break rocks into pieces
  • heating - hot lava melts rocks turing them into a liquid
  • cooling - changes liquid rock into a solid
  • pressure - binds sediment rock pieces together.

RockCycleDiagram.png


Rock Cycle
The main idea is that rocks are continually changing from one type to another and back again, as forces inside the earth bring them closer to the surface (where they are weathered, eroded, and compacted) and forces on the earth sink them back down (where they are heated, pressed, and melted). So the elements that make up rocks are never created or destroyed — instead, they are constantly being recycled. This video explain and visually shows different stages that a rock goes through.