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
Rocks formed by extreme heat and pressure deep inside the Earth
What are metamorphic rocks
100
This rock is usually white and formed on the bottom of oceans from the remains of once-living things
What is limestone
100
The process by which one kind of rock changes to another
What is the rock cycle (p. 180)
100
Basic building block of rocks
What are minerals
200
Determines the size of the mineral crystals in an igneous rock
What is the speed at which it cooled down (Cools slowly, crystals are larger, cools quickly, crystals are small p. 153)
200
Force that squeezes rocks together
What is pressure
200
Sedimentary rocks are formed from sediments and pressed together in these
What are layers
200
True or False The rock cycle has one start and one stop
What is FALSE The rock cycle is never ending
200
Five physical properties of rocks
What are color, streak, hardness, cleavage and luster
300
When an igneous rock cools slowly, the mineral grains are small or large
What is large
300
Marble's original type of rock
What is limestone (study chart on p. 173)
300
True or False Sedimentary rocks are easily changed by wind and water
What is TRUE
300
Scientist that studies rocks
What is a geologist
300
Measure hardness using this scale
What is the Mohs' hardness scale
400
Melted rock below the Earth's surface
What is magma
400
Some uses of metamorphic rock
Buildings, statues, jewlery, glassmaking, ceramic, fuel (coal) (p. 176-177)
400
The remains of animals or plants from long ago
What are fossils
400

True or False Granite that was originally gneiss is an example of metamorphic rock

What is FALSE (Gneiss was originally granite.)

400
The hardest mineral
What is a diamond
500
Magma that reaches the Earth's surface
What is lava
500
True or False Metamorphic rocks are formed from only sedimentary and igneous rocks
What is FALSE (They can also be formed from other metamorphic rocks. Physical and mineral make-up change p. 172)
500
True or False Layers of sedimentary rocks are always the same thickness
What is FALSE
500
Rocks that are formed when cooled and hardened
What are igneous rocks
500
Rocks that are mined because they contain useful minerals or substances
What are ores
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