· Web viewRock Cycle Study Guide Vocabulary Words Rock Cycle – the process that recycles rocks...
Transcript of · Web viewRock Cycle Study Guide Vocabulary Words Rock Cycle – the process that recycles rocks...
Rock Cycle Study GuideVocabulary Words
Rock Cycle – the process that recycles rocks into other kinds of rocks
Rock Key – a classification system for identifying unknown rocks
Igneous Rock – a rock that is created after lava or magma (melted rock) cools and hardens
Sedimentary Rock – a rock that forms when sediments press together
Metamorphic Rock – a rock that has been changed by heat or pressure
Hardness – the test of how easily one rock will scratch (or be scratched) by another object
Luster – the shine of a rock
Streak – the mark left by a rock when rubbed on a plate
Cleavage – the smooth break in a rock
Fracture – the rough break in a rock
Characteristics of Rocks
Igneous Metamorphic Sedimentary Forms when lava
(magma) cools and hardens
Can have crystals, air bubbles or a glassy surface
Most of the Earth’s crust is made up of this rock
Rocks that have been changed from heat and pressure
You can often see minerals in these rocks
Forms deep in the Earth
Formed when small pieces of rock are pressed together
You can often see fossils or other rocks in this rock
Often forms at the bottom of bodies of water
Igneous Metamorphic Sedimentary Granite
Pumice
Obsidian
Marble
Gneiss
Quartzite
Conglomerate
Sandstone
Coal
The Rock Cycle
Using The Rock Key
The rock key is a dichotomous key. What are some questions you can expect to see when using the rock key? What types of simple tools may be used?