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6th Grade Science / Lesson 5 - Sedimentary Rocks

Sedimentary Rocks
What will we be learning today?


  • In this lesson, we are going to learn about sedimentary rocks.

  • We will begin today's lesson, by defining sedimentary rocks


  • Sedimentary Rocks are formed when mud, silt, gravel, or sand carried by water is subjected to pressure, heat, or chemical change and forms rock.

  • Sedimentary rocks are found in layer at the bottom of lakes and oceans.



There are two different types of Sedimentary Rocks:


  • Clastic Rocks : sedimentary rock that formed when rock fragments are squeezed together.

  • Organic Rocks : forms where the remains of plants and animals are deposited in thick layers.


Sedimentary Rocks are Useful


  • Sedimentary Rocks are used for buildings, trim and monuments

  • Pieces of Sedimentary Rocks mixed with other materials to make concrete and cement

  • Sedimentary Rocks are very useful in helping to piece together Earth's history. Sedimentary Rocks contains clues called fossils.

  • Fossils are the remains or imprints of living things of the past.


Let's Review What We Learned Today!


Sedimentary Rock : made of pieces of rock that have been squeezed and stuck together.

There are two different kinds of Sedimentary Rock :

  • Clastic : when rock fragments are squeezed together

  • Organic : when remains of plants and animals are deposited in thick layers

  • Fossils : remains or imprints of living things of the past