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Chapter 4-1 Rock Cycle

Chapter 4-1 Rock Cycle. Chapter 4-1 Main Ideas. Describe how rocks have been used by humans. Describe the 4 processes that shape Earth’s features. Key Vocabulary. Rock – a naturally occurring solid mixture of one or more minerals/organic matter.

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Chapter 4-1 Rock Cycle

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  1. Chapter 4-1 Rock Cycle

  2. Chapter 4-1 Main Ideas • Describe how rocks have been used by humans. • Describe the 4 processes that shape Earth’s features.

  3. Key Vocabulary • Rock – a naturally occurring solid mixture of one or more minerals/organic matter. • early uses for rocks included tools & weapons.

  4. Key Vocabulary • Rock Cycle – the continuous process by which new rock forms from old rock material. • Weathering – the process in which wind, water, ice, heat, & gravity break down rock

  5. Key Vocabulary • Erosion – the process by which sediment is removed from its source.

  6. Key Vocabulary • Deposition – the process by which sediment, moved by erosion is dropped and comes to rest. • Sediment – rock, mineral fragments.

  7. Key Vocabulary • Uplift – is movement within the Earth that causes rocks inside the Earth to be moved to the Earth’s surface. - When uplifted rock reaches Earth’s surface, erosion, weathering, & deposition begin.

  8. Key Vocabulary • Composition – the minerals that a rock contains; the chemical makeup of rock. • Texture – the size, shape, & positions of the grains that make up a rock.

  9. Types of Rocks • Igneous • Sedimentary • Metamorphic

  10. Igneous Rock • Formed when magma cools • Inside the Earth • Can be heated under pressure • Becomes metamorphic rock • Can be melted again to form new magma -- Becomes igneous rock • Above the ground • Can be weathered and eroded • Becomes sedimentary rock

  11. Sedimentary Rock • Formed when sediments compact & cement into layers • Inside the Earth • Can be heated under pressure to form metamorphic rock • Above the ground • Can be weathered again to form more new sediment • Inside the Earth • Can be melted again to form new magma igneous rock

  12. Metamorphic Rock • Formed when rock changes under heat & pressure • Inside the Earth • May melt to form magma igneous rock • Above the ground • May weather & erode to form sediment • Inside the Earth • Can be heated under pressure to form metamorphic rock

  13. http://www.cet.edu/ete/modules/msese/earthsysflr/rock.html

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