Definitions
The study of Earth's physical structure, its history,, the processes acting on it and the rocks of which it is composed.
What is geology?
The preserved remains of a once-living organism.
What is a fossil?
Crust, mantle, and core.
What are the three main layers of Earth?
The decayed remains of once-living creatures.
What is humus?
Rusting iron in rocks is a type of ________________weathering.
What is chemical?
The decayed remains of once-living creatures.
What is humus?
When large rocks are broken into small rocks from physical forces such as ice, temperature changes, and abrasion of sand or running water is called____________weathering.
What is physical?
The first layer of Earth.
What is the crust?
This rock is made from sediments, which are sand, minerals, and other materials that are primarily laid down by water.
What are sedimentary rocks?
Most fossils are found in this type of rock.
What is sedimentary?
Inorganic crystalline substances found naturally in the Earth.
What are minerals?
When the minerals in rock chemically react with air or water, changing their composition is called____________weathering.
What is chemical?
The middle layer of Earth that is right below the crust and is the layers with the largest mass.
What is the mantle?
This rock is made from melted, or molten, rock.
What are igneous rock?
The vast majority of all fossils on this planet are of this type of organisms.
What are hard-shelled organisms like clams?
The process of wearing or grinding something down by wind, water, or other natural agents.
What is erosion?
These people believe that the same processes we observe today are responsible for forming most of the geological features of Earth.
Who are uniformitarians?
This has two layers, the inner and the outer.
What is the core?
This rock is has changed its form often due to extreme heat or pressure.
What is metamorphic rock?
What is world-wide flood?
A surface of erosion that separates one layer of rock from another.
What is unconformity?
These people believe much of the geology we see today is the result of processes that occurred once in Earth's past and will not be repeated.
Who are catastrophists?
Earth's lithosphere is believed to be broken up into pieces called______________.
What are plates?
This makes rocks different from each other is the materials they are made of.
What are minerals?
Erosion is a type of____________________weathering.
What is physical?