Rocks and The Rock Cycle Rocks All rocks
- Slides: 23
Rocks and The Rock Cycle
Rocks • All rocks are mixtures of minerals. • Scientists classify rocks according to how they are formed. • There are three types of rocks: Igneous Sedimentary Metamorphic
Igneous Rocks • Igneous rocks form from cooled magma or lava. • When magma or lava cools it hardens to form a rock. • Magma is melted rock below Earth’s surface. • Lava is melted rock that flows out of the ground onto Earth’s surface.
Igneous Rocks and Crystals • Igneous rocks may have small or large crystals. • If the rock is made from magma it may have large crystals because it cools slowly. • If the rock is made from lava it may have small crystals because it cools faster.
Igneous Rocks Volcano
Examples of Igneous Rocks Obsidian Granite
Sedimentary Rocks • Sedimentary rocks are made of sediments. • Sediments are bits of rocks, shells, and the remains of dead plants and animals. • Over millions of years sediments that are buried under ground are pressed and cemented together to form a sedimentary rock.
Sedimentary Rocks and Fossils • Fossils are often found in Sedimentary rocks.
Layers of Sedimentary Rocks • Sedimentary rocks often form in layers. • The oldest layer is on the bottom. • The youngest layer is on the top.
Oldest or Youngest? Youngest Oldest
Examples of Sedimentary Rocks Limestone Shale
Metamorphic Rocks • Metamorphic rocks are formed from existing rocks that have been squeezed and heated deep inside Earth’s crust.
Examples of Metamorphic Rocks Marble Gneiss
The Rock Cycle • The rock cycle is the process of rocks changing into other kinds of rock.
Factors of The Rock Cycle • • • Melting Cooling and Hardening Weathering and Erosion Squeezing and Cementing Heating
The Rock Cycle
Questions
What are some factors that affect the rock cycle?
Are rocks always changing?
Which type of rock has layers?
Which layer is the oldest? Bottom or Top
How are rocks formed? Igneous. Sedimentary. Metamorphic-
- Igneous rock sedimentary rock metamorphic rock
- Igneous metamorphic and sedimentary
- Siklus batuan
- Chapter 3 standardized test practice answers
- A rock climber's shoe loosens a rock and her climbing buddy
- Name three lines
- How can one type of rock change into another type of rock?
- Adventure sports bungee jumping
- Extrusive vs intrusive igneous rocks
- Site:slidetodoc.com
- How does soil link the rock cycle and biosphere?
- Rock types and cycle quick check
- Rock cycle example
- Sedimentary rocks concept map
- Concept map magma
- Rock cycle comic strip
- Rock cycle song (sedimentary igneous metamorphic)
- Rock cycle learning objectives
- Rock cycle jeopardy
- Rock cycle song
- Rock cycle essential questions
- Types of rocks foldable
- Label rock cycle
- Rock cycle doodle notes