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6th Grade Science / Lesson 3 - Rock Types and The Rock Cycle

Rock Types and Rock Cycle
What will we be learning today?


  • In this lesson, we are going to learn about rocks, rock types and the rock cycle.

  • Rocks can be found in creek beds, river banks, road cuts, cliffs and beaches.

Can you name any rock types?


  • We will begin today's lesson, by defining rock and list the different rock types.


  • Rock is defined as a solid body of one or more kinds of minerals. Rock is a piece of the Earth's crust.

  • Characteristics that help define rocks:
  • Naturally formed
  • Nonliving
  • Firm, solid matter
  • A mass that sticks together
  • Makes up part of a planet such as Earth, especially in it's outer crust

  • Rock Cycle is the process of changing from one rock type to another.

  • Rock Cycle goes through the following processes:

  • Weathering
  • Erosion
  • Melting
  • Compaction
  • Cementation

    • Rocks are divided into three different types of rocks.

      • Igneous Rocks

      • Sedimentary Rocks

      • Metamorphic Rocks

    • The combination of temperature, pressure, and chemical interactions at work within the Earth and on the surface have produced this huge variety of rocks.





    Let's Review What We Learned Today!


    • Rocks : a solid body of one or more minerals.

    • Rock Cycle : changing from one type of rock to another.

    • Three different types of rocks:

    • Igneous Rocks

    • Sedimentary Rocks

    • Metaphoric Rocks


    The study of rocks is called petrology.

      Rocks record our planet's past. They tell us where rivers used to flow, where huge island seas were   located, and what lived in these waters. The earth's rocks tell us stories of the glaciers and how the   Ice Age changed the planet.