Bellwork How igneous rocks form? Igneous rocks are classified according to :________. What is a metamorphic rock? Two types of metamorphic rocks are:_____________&___________. 8 minutes ONLY

Chapter 3: Earth’s Structure and Materials Lesson 5: Sedimentary Rocks 7 th grade Pearson Workbook

Sedimentary Rocks Sediment is small, solid pieces of material that come from rocks or living things. Sedimentary rocks form when sediment is deposited by water and wind. Most sedimentary rocks are formed through a sequence of processes: weathering, erosion, deposition, compaction, and cementation. Rock on Earth’s surface is constantly broken up by weathering—the effects of freezing and thawing, plant roots, acid, and other forces on rock.

How Sedimentary Rock Forms Sedimentary rocks form through a series of processes over millions of years. Sedimentary Rocks

What is the proper sequence of the terms in the word bank that will show how mountains can change into sedimentary rock? Sedimentary Rocks

Geologists classify sedimentary rocks according to the type of sediments that make up the rock. The three major groups of sedimentary rocks are clastic rocks, organic rocks, and chemical rocks.

Sedimentary Rocks A clastic rock is a sedimentary rock formed when rock fragments are squeezed together. Some common clastic rocks are shale, sandstone, conglomerate, and breccia. Organic rock forms where the remains of plants and animals are deposited in layers. Organic rocks include coal and limestone. Chemical rock forms when minerals dissolved in a water solution crystallize. Chemical rocks include limestone and rock salt.

Organic Rocks How do coal and limestone form? Sedimentary Rocks

People have used sedimentary rocks throughout history for many different purposes, including for tools and building materials. Chert and flint were used to make spearheads and arrowheads. Sandstone and limestone are used as building materials. Limestone is used to make cement and steel.