Igneous Rocks
Metamorphic Rocks
Sedimentary Rocks
Rock Cycle
Minerals and Crystals
100
Lightweight rock with tiny holes and crumbly Pumice, granite or sandstone
What is pumice
100
True or False Metamorphic rock changes from one type of rock to another
What is TRUE
100
Sedimentary rocks are formed from sediments that become pressed together in these
What are Layers
100
The three basic kinds of rocks changing from one form to another because of melting, pressure, heat and cooling
What is the Rock Cycle
100
Basic building block of rocks
What are minerals
200
Determines the size of the mineral grains (crystals) in an igneous rock
What is the speed at which it cooled down. (Cools slowly, crystals will be larger...cools quickly, crystals will be smaller)
200
True or False An example of metamorphic rock: granite that was originally gneiss
What is FALSE (Gneiss was originally granite - study chart on p. 173)
200
True or False Each layer in a sedimentary rock is the same thickness
What is FALSE
200
This kind of rock forms when extreme heat and pressure cause a rock to change form
What is metamorphic rock
200
Four properties of rocks
What are color, streak, hardness, cleavage
300
When an igneous rock cools slowly, the mineral grains are this size
What is larger
300
Marble's original type of rock
What is limestone (see chart on p. 173)
300
True or False Sedimentary rocks are easily changed by wind and water
What is TRUE
300
True or False The rock cycle ends when a rock is a metamorphic rock
What is FALSE. The rock cycle is never ending.
300
How hardness of minerals is measured
What is Mohs' hardness scale
400
The layer of melted rock below Earth's crust
What is magma
400
A squeezing force that pushes things together
What is pressure
400
This rock forms on the bottom of oceans from the remians of once-living things. Can contain shells or bones from animals
What is limestone
400
A scientist that studies rocks
What is geologist
400
The property that describes the way that light reflects off the surface of a mineral
What is luster
500
Magma that reaches Earth's surface
What is lava
500
Metamorphic rocks are formed from these types of rocks
What are igneous, sedimentary and even other metamorphic rocks (p. 172)
500
The remains of animals or plants from long ago
What are fossils
500
A mineral or rock that is mined because it contains useful minerals or substances
What are ores
500
Hardest mineral on the Mohs' hardness scale
What is a diamond
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