Scientists
Rocks
Fossils
Bell Work
Vocabulary
100
Believed earth was once completely molten and has been slowly cooling ever since.
Who is Kelvin?
100
These are the three major types of rocks.
What are sedimentary, metamorphic, and igneous rocks?
100
An organism that has been embedded and preserved in rock.
What is a fossil?
100
A series process in which rocks change and form into other types of rock. It has been happening forever and will continue to happen until Earth's end.
What is the rock cycle?
100
The removal and transportation of loose earth material.
What is erosion?
200
Believed the continents were once connected but drifted apart after time.
Who is Wagner?
200
A rock that forms due to sediments being compacted and cemented together by a matrix.
What is a sedimentary rock?
200
Fossils of organisms that live for a short period of time in many places around the world.
What is an index fossil?
200
This is the main ingredient in Limestone (is the reason that Limestone fizzes).
What is Calcium Carbonate?
200
The material that glues the sand together in sandstone.
What is a matrix?
300
They proposed that meteors killed dinosaurs and are associated with the idea of "death from above".
Who are the Alvarez's?
300
A rock that forms when a rock melts due to extreme heat,then cools and hardens.
What is an igneous rock?
300
Fossils very rarely form in these rocks.
What are metamorphic and igneous rocks?
300
This is how long humans have existed.
What is 200,000 years?
300
The particles of Earth material that settled out of the water.
What are sediments?
400
Created radiometric dating.
Who is Arthur Holmes?
400
An existing rock that changes due to heat and/or pressure.
What is a metamorphic rock?
400
Fossils provide geologists with important evidence about ________ __________.
What are prehistoric environments?
400
When water gets into the cracks of rocks and freezes, then the rock expands and cracks(an example of physical weathering).
What is ice wedging?
400
The idea that rock layers get older the closer they are to the bottom.
What is Superposition?
500
In the video "How the Earth was Made", this scientist believed that water came from other places in space.
Who is Dan Durda?
500
This is the main difference between the three rock types.
What is how they are formed?
500
Scientists can figure out the age of a rock by using this dating method.
What is the radiometric dating method?
500
The amount of cooling time determines this in a rock.
What is the size of the crystals in a rock?
500
The idea that layers are deposited in a horizontal or nearly horizontal position.
What is Original Horizontality?
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