Basic Definitions
Rock Cycle
Changing Earth
Properties of Rocks
Volcanoes
100
a series of geologic processes in which rock can form, change from one type to another, be destroyed and form again
rock cycle
100
What conditions must be present for igneous rock to change into metamorphic rock.
heat and pressure
100
Over time, repeated temperature changes can cause a rock to break down into smaller pieces. What is this an example of?
weathering
100
A rough rock will have ___ grains.
A. smooth B. fine-grains C. coarse gains D. soft
coarse
100
Volcanic rock is __ rock:
igneous
200
a naturally occurring, solid combination of one or more minerals or organic matter
rock
200
What conditions must be present for metamorphic rock to change into igneous rock.
melting; cooling
200
Granite can form when magma cools within Earth. Basalt can form when lava cools on Earth's surface. What do granite and basalt have in common?
They are both igneous.
200
!!DOUBLE JEOPARDY!!
Fine-grained or Coarse-grained are descriptions of a rock's ___
texture
200
Name each class of rock below:
forms from cooled molten rock --
forms from other rock that is changed by heat and pressure or chemicals --
forms from evaporated water or compressed layers of sediment --
forms from cooled molten rock -- igneous
forms from other rock that is changed by heat and pressure or chemicals -- metamorphic
forms from evaporated water or compressed layers of sediment -- sedimentary
300
What is a naturally occurring, usually inorganic solid that has a definite crystalline structure and chemical composition?
mineral
300
What conditions must be present for igneous rock to change into sedimentary rock.
___ and ___, then ___ and ___
weathering and erosion, then compaction and cementation
300
The rising of regions of Earth's crust to higher elevations is called __.
The sinking of regions of the crust to lower elevations is ___.
uplift; subsidence
300
If a magma cools inside the Earth, it is likely to form __ crystals
large well-formed crystals
300
What moves under the surface of Earth that causes volcanoes?
tectonic plates
400
What is a solid, geometric form that results from a repeating pattern of atoms or molecules?
a crystal
400
What type of rock materials can become igneous rock?
magma or lava
400
This image shows a __ zone.
rift
400
What class or rock is described below:
Layers of sediment become compressed and cemented over time to form rock.
sedimentary rock
400
What volcanic rock is 65% feldspar; 10% mica; and 25% quartz?
Red granite (Granite is ok.)
500
Which statement is true of BOTH intrusive and extrusive igneous rocks?
A. They are coarse grained.
B. They form outside of the Earth.
C. They cool rapidly.
D. They form from molten rock.
D
500
What kind of rock can become sedimentary after weathering and erosion?
igneous, metamorphic or other sedimentary rock [any of them]
500
Identify these two types of rock:
Molten rock beneath the surface of Earth cools and becomes solid.
Chemical processes or changes in pressure or temperature change a rock.
igneous; metamorphic
500
What type of igneous rock is described below?
Molten rock reaches the surface and cools to become solid rock.
extrusive igneous
500
Why is this rock cycle diagram inaccurate?
Any of these:
Sediment or sedimentary rock may melt into lava or magma.
Igneous rock may be changed into metamorphic rock.
Metamorphic rock can be changed by heat and pressure into other metamorphic rock.
Igneous rock may change back into igneous rock if it melts or cools.