Warm-up Page: 143, 1. Igneous rock masses that form underground are called _______________. intrusions Page: 144, 2. A ____________ is a vent through which.

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Presentation transcript:

Warm-up Page: 143, 1. Igneous rock masses that form underground are called _______________. intrusions Page: 144, 2. A ____________ is a vent through which magma, gases, or volcanic ash is expelled. volcano Page: 144, 3. The shiprock formation on this page is located in what state? New Mexico

Warm-up 4/11 Page: 145, 1. Loose fragments of rock, minerals, and organic material that result of natural processes are called ________. sediment Page: 145, 2. Sediment is generally transported by _____, _____, or _______ to new location. wind, water, ice Page: 145, 3. Eventually, the loose sediment is ____. deposited

Objectives: S.W.B.A.T. Define sedimentary rock Name 2 main processes that form sedimentary rocks Name some examples of sedimentary rocks Name a characteristic of sedimentary rocks Discuss how are rocks are used in their lives

Activities: Warm-up Demonstration – student-teacher sedimentary rock formations Notes/discussions Video – Out of the Rock

SEDIMENTARY ROCK: SEDIMENTARY ROCKS Sedimentary rocks cover 75% of the surface of Earth.

SEDIMENTARY ROCK: They unlock clues to the past! If sedimentary rocks are common in a region it was probably under water at one time.

SEDIMENTARY ROCK: FORMATION OF SEDIMENTARY ROCKS Step 1: Sediments are deposited by water, wind, ice, etc, and are buried.

SEDIMENTARY ROCK: Step 2: Compaction and/or Cementation Compaction is the decrease in volume brought about by pressure.

SEDIMENTARY ROCK: COMPACTION SAND Siltstone SILT Shale CLAY Sandstone Conglomerate GRAVEL – PEBBLES

SEDIMENTARY ROCK: Cementation is the process by which sediments are joined (glued) together to form rock.

SEDIMENTARY ROCK: Characteristics of Sedimentary rocks Visible Layers May contain fossils May contain ripple marks May contain mud cracks

TYPES OF SEDIMENT AND SIZES SEDIMENTARY ROCK: TYPES OF SEDIMENT AND SIZES Large Small Gravel & Pebbles > 2 mm Coarse Grain Fine Grain Sand > 0.6-2 mm Silt > .004 mm – .06 mm Clay < .004 mm

Sedimentary rocks

http://easyscienceforkids.com/igneous-rock-facts-video-for-kids/