quick refresher quick refresher define the following terms: rock rock cycle igneous rock metamorphic...
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Quick RefresherDefine the following terms:RockRock CycleIgneous RockMetamorphic RockSedimentary Rock
What is a Rock? Solid Naturally-occurring Inorganic Mixture of minerals and other
materials.
What is the difference between a rock and a
mineral? Rocks are mixtures of ONE or MORE
minerals.
What is a Rock?
Rocks are divided into 3 groups based on how they were formed:
SEDIMENTARYIGNEOUSMETAMORPHIC
Formed from sediments (rock fragments, mineral grains, animal & plant remains) that are pressed (compacted) and stuck (cemented) together.
EXAMPLES: Limestone and conglomerate.
Sedimentary Rock
SEDIMENTARY
1. Weathering2. Erosion 3. Compacting
COLOR THE ARROWS BROWN
1. Weathering2. Erosion3. Compacting
Once a rock is formed, does it stay the same
rock forever?NO!
Rocks are continually changed by many processes, such as– Weathering and erosion,– compaction and
cementation,– melting and cooling– Intense heat and pressure
Rocks can change to and from the three types
What is a Rock?
Rocks are divided into 3 groups based on how they were formed:
SEDIMENTARYIGNEOUSMETAMORPHIC
“Ignis” = Latin for “fire”
Formed from the cooling of either magma or lava
The most abundant type of rock
Melted rock cools and hardens EXAMPLES: Obsidian and Basalt
What is a Rock?
Rocks are divided into 3 groups based on how they were formed:
SEDIMENTARYIGNEOUSMETAMORPHIC
Rocks that have changed due to intense heat and pressure
“Meta” means “change” and morphosis means “form” in Greek
Igneous, sedimentary and other metamorphic rocks can change to become metamorphic rocks
Heat or pressure changes rocksEXAMPLES: Marble and Gneiss.
What is the process through which rocks
change? The Rock Cycle—earth materials
change back and forth among the different types of rocks in a never-ending cycle.
IGNEOUS
SEDIMENTARY
1. Weathering2. Erosion 3. Compacting
1. Weathering2. Erosion3. Compacting
1. Melting2. Cooling3. Hardening
1. Melting2. Cooling3. Hardening
METAMORPHIC
Heat and Pressure
Heat and Pressure
How Can I Tell The Difference?
Crystals? ------- Metamorphic Fossils? ------- Sedimentary Gas bubbles ------ Igneous Glassy surface ----- Igneous Ribbonlike layers ---- Metamorphic Sand or pebbles? ----- Sedimentary
How are rocks redistributed? The core, mantle, & crust are one
giant rock recycling machine
A Rock’s Story Tell the story of a rock’s life cycle by
making a comic strip starring a rock. Give this rock a human personality and
character. Your comic must:
– Explain the rock cycle in your own words.– Describe all the ways a rock can change.
Your comic should include:– The 3 types of rocks– The way each type of rock is formed– How one type of rock can change
into another.– Pictures to illustrate the rock cycle.