Rock Cycle Study Guide

Intrusive Igneous Rock
Forms in the mantle BELOW the Earth’s SURFACE

Extrusive Igneous Rock
Forms when magma flows ON TOP of the Earth’s SURFACE

Lava
Magma that flows out of volcanoes

Clastic Rocks
Rocks made from layers of pebbles and sand- Look like pieces of sediment with pebbles stuck in them (ex. sandstone)

Organic Rock
Froms fpr,the remains of once-living things (ex. chalk; coal)

Metamorphic Rock
Forms from igneous or sedimentary rocks from heat and pressure.

What do scientists call “changed rocks”
Metamorphic Rocks

Strata
Layers of sedimentary rock

Non-Foliated
When colors are mixed together in the rock

Foliated
When the colors are in bands in the rock

3 Things that Change a Metamorphic Rock FROM the Original Rock
1. HEAT
2. PRESSURE
3. SMOOTHNESS

3 Types of Sedimentary Rock
1. Clastic
2. Chemical
3. Organic

What changes into igneous rock when it cools
Magma

3 MAIN types of Rocks
1. Igneous
2. Sedimentary
3. Metamorphic

Scientists study rocks and rock strata learn about earths’
Past

WEATHERING
When Rock is Broken Down Slowly

Erosion
When the earth’s surface is worn away by of water and wind

What does Organic mean?
Made from nature

What 2 processes form Sedimentary Rocks
1. Compaction
2. Cementations

What 2 processes change any rock into an igneous rock
1. Melting
2. Solidification

Which clastic rock fine has fine to coarse texture (Type of sedimentary rock)
Sandstone

Which clastic rock has very grain texture (type of sedimentary rock)
siltstone

Which rock is made from compacted remains (type or sedimentary rock)
Bituminos coal

Which foliated rock is made due to low grade metamorphism of shale (type of metamorphic rock
Slate

Which foliated rock is created due to the high amount of hear and pressure (type of metamorphic rock)
phylite

Which Nonfoliated rock has fine to coarse texture and is composed of quartz? (type of metamorphic rock)
Quartzite

Which nonfoliated rock has a coarse texture and is composed of various minerals? (type of metamorphic rock)
metaconglomerate

Name one rock that has very coarse texture (larger crystals)
Pegmatite

3 Intrusive Igneous Rocks
Granite
Pemagrain
Diorite

Name one extrusive rock with fine texture (small crystals)
Rhyolite

Name 3 Extrusive Igneous Rocks
Obsidian
Pumice
Rhyolite