Sedimentary rocks

• What type of rocks are discussed in this video?

  Sedimentary rocks
• How are rocks classified?

  According to the way they formed
• What is the formation process of igneous rocks?

  Cooling and solidification of magma or lava
• How do sedimentary rocks form?

  From compaction and cementation of sediments
• What does compaction mean?

  Squeezing together sediments
• What does cementation mean?

  Gluing sediments together
• What are sediments?

  Fragments of rock broken down by weathering
• What causes weathering?

  Wind, ice, and running water
• What happens to a boulder over ten thousand years?

  It breaks down into smaller pieces
• How are sediments classified?

  According to their size
• What is the smallest category of sediment?

  Clay
• What is the largest category of sediment?

  Boulders
• What size range defines sand-sized sediments?

  0.006 to 0.2 centimeters
• What size defines boulders?

  Larger than 25.6 centimeters
• What is a clastic sedimentary rock?

  A rock formed from compacted sediments
• What is a clast?

  A fancy word for sediment
• How are clastic sedimentary rocks classified?

  According to their size
• What is the first type of clastic sedimentary rock mentioned?

  Conglomerate
• What is a characteristic of conglomerate?

  Composed of different sized rounded sediments
• How do the sediments in breccia differ from those in conglomerate?

  Breccia has angular, pointy sediments
• What is sandstone made of?

  Compacted sand grains
• What is siltstone made of?

  Compacted silt
• What is shale made of?

  Compacted clay particles
• What are the two other types of sedimentary rocks mentioned?

  Organic and crystalline sedimentary rocks
• How do crystalline sedimentary rocks form?

  Through chemical processes like evaporation
• How does rock salt form?

  From seawater evaporation leaving salt crystals
• What is a precipitate?

  A mineral that crystallizes from dissolved water
• What are bio clastic rocks?

  Rocks formed from compacted organic material
• What is coquina made of?

  Compacted shells from sea creatures
• What type of rock may contain fossils?

  Sedimentary rocks
• Why do sedimentary rocks commonly contain fossils?

  Formation processes do not destroy fossils
• How do the formation processes of igneous and metamorphic rocks differ from sedimentary rocks?

  Igneous and metamorphic involve heat and pressure
• What will be learned about sedimentary rocks in school?

  Details about their formation and characteristics
• What is the purpose of the rock's flowchart mentioned?

  To fill in information about rocks
• What type of rocks are discussed in this video?

  Metamorphic rocks
• How are rocks classified?

  According to how they form
• What forms igneous rocks?

  Cooling and solidified magma
• How do sedimentary rocks form?

  From compacted and cemented sediments
• What drives the change in metamorphic rocks?

  Exposure to intense heat or pressure
• What are the two types of metamorphism?

  Contact metamorphism and regional metamorphism