Scientists who study the physical properties of rocks to tell how the rocks have formed are called________________.
Geologists
100
Rough-textured rocks have ________ grains, and fine textured rocks have ________ grains.
large, small
100
Deposited rock particles and other materials that settle in a liquid are called ________.
sediments
100
Metamorphic rocks are rocks that have been changed by __________,___________,or both.
heat, pressure
100
A mineral that splits along flat surfaces in three directions is _________.
Galena
200
Rocks are made of naturally occurring substances called ___________ that are neither plants nor animals.
Minerals
200
Rocks formed from hot, molten rock material that has cooled and hardened are called _________.
Igneous
200
Two examples of sedimentary rocks are
Rock salt, Shale
200
Metamorphic rocks are classified into two groups __________ and __________.
with bands, without bands
200
Two examples of minerals that break unevenly are ___________ and talc.
quartz
300
List the four properties that are used to tell minerals apart.
Color, Luster, Hardness, Streak
300
Magma is molten material _________ the surface of Earth.
below
300
Two examples of sedimentary rocks are
Limestone, conglomerate
300
The ________ of rocks stacked up on top of a rock builds up ________ that can cause the rock to change.
weight, pressure
300
When limestone is heated under pressure ________ forms.
Marble
400
The property that refers to the way light bounces of a mineral is called____________.
luster
400
Magma that reaches Earth's surface is called _________.
lava
400
How do Sediments Form Layers:
Sediments are laid down in __________ order, with those at the bottom laid down first.
time
400
How Do Rocks Change:
Rocks are changed from one type into another by a never-ending process called the ___________.
rock cycle
400
What stage in the rock cycle is between metamorphic rock and igneous rock?
Lava
500
Rubbing minerals on a(n) ________ may leave a clue about the mineral.
streak plate
500
An example of an igneous rock with a fine texture is ________.
Basalt
500
How do Sediments Form Layers:
Words like older, oldest, younger, and youngest describe __________.
age
500
What Can You Learn from Rock Layers:
Any trace, mark, or remains of an organism at least 10,000 years old usually preserved in sedimentary rock is called an _______.
fossils
500
What two things can cause changes in the minerals making up rocks?