A naturally occurring substance that is neither plant nor animal
What is a mineral?
100
This property of rocks can be described with words such as black, silvery, white, etc.
What is color?
100
This is molten material below the Earth's surface.
What is magma?
100
Sedimentary rocks are formed when smaller bits of rock become pressed or cemented together. These rock pieces can be carried by ________, __________, or _________.
What are water, wind, or ice?
100
Geologists classify metamorphic rocks into ______ groups.
What is two?
200
A hollow space in a rock where a plant or animal once was.
What is a mold?
200
This property can be observed by the way light bounces off of a rock or mineral.
What is luster?
200
Below the surface magma cools and hardens slowly to form _________ grains in the minerals.
What is large?
200
These are deposited rock particles and other materials that settle in a liquid.
What are sediments?
200
In the first group, pressure causes minerals to spread out in _________.
What are bands?
300
An endless process where rocks change from one form to another.
What is the rock cycle?
300
This property can be observed by rubbing a mineral gently but firmly on a ______________.
What is a streak plate?
300
This is magma that reaches the Earth's surface.
What is lava?
300
This sedimentary rock is made up of grains of sand that have been cemented together.
What is sandstone?
300
The second group of metamorphic rocks have not bands. They do not break in _________.
What are layers?
400
A mark made by pressing.
What is an imprint?
400
This property can be tested with a fingernail, a copper penny, or an iron nail.
What is hardness?
400
When lava cools quickly the mineral grains are _________.
What is small?
400
The remains of plants and animals are gently and rapidly buried by sediments in sedimentary rocks. These remains are called __________.
What are fossils?
400
When limestone is heated under pressure, this rock forms.
What is marble?
500
A rock's age described by the words older, oldest, younger, or youngest.
What is the relative age?
500
This scientist studies the properties of rocks to tell how the rocks may have formed.
What is a geologist?
500
Lava can cool so quickly that mineral grains do not have time to form. The result is ___________________.
What is volcanic glass?
500
This sedimentary rock is formed of substances that were once part of living things which become cemented together. This type of rock is abundantly found in Illinois.
What is limestone?
500
Granite or shale can be heated under pressure to become this rock.