It was preserved in its entirety because it was engulfed by tree sap.
What is an Amber Fossil?
100
It's the doctrine that stated that Earth’s landscapes had been produced by sudden and often worldwide disasters triggered by unknowable causes.
What is Catastrophism?
100
It's a sedimentary layer that can be distinguished from the layer above and below it.
What is a stratum (or strata)?
100
It can be used to determine which layers of rocks, the top layers or the bottom layers, are older or younger that each other.
What is the Law of Superposition?
100
It is my age after I only have 1/4 of my original amount of radioactive atoms and my half-life is 10,000 years.
What is 20,000 years old?
200
It existed in many different places on the planet, but only for a short period in geologic history.
What is an Index Fossil?
200
Simply stated: "The present is the key to the past".
What is uniformatarianism?
200
It states that sedimentary deposits or lava flows generally form horizontal layers.
What is the Principle of Original Horizontality?
200
It tells us that if a particular fossil is present in a rock layer, the layer must be the same age as other layers containing the same fossil, no matter where in the world the layers occur.
What is Principle of Faunal (Fossil) Succession
200
It is the number of half-lives a rock sample had that lost 75% of its parent radioactive material.
What is two half-lives?
300
It is the most common type of fossil found.
What is a Trace Fossil?
300
It's the current estimate of the age of the Earth.
What is 4.6 billions years old?
300
The younger layers will be on top of the older layer - if they are not disturbed that is!
What is the Law of Superposition?
300
It tells us that if a rock fragment is included in larger rock formation that larger formation is younger rock.
What is the Law of Inclusions?
300
The number of half-lives I have had being that I started with 280 grams of radioactive material but have decayed to 35 grams.
What is three half-lives?
400
It's the type of fossil found when all of the "hard parts" are preserved.
What is Body Fossil?
400
He was the geologist who developed the theory of uniformitarianism.
Who was James Hutton?
400
It tells us that an igneous dike overlaying horizontal layers of sedimentary rock is younger.
What is the Principle of Cross-Cutting Relationships?
400
It is the way we know that if sedimentary rock strata is not lying horizontal then something must have moved it.
What is the Law of Original Horizontality?
400
The amount of stable daughter material in an original radioactive 500 gram sample after three half-lives.
What is 437.5 grams?
500
It is an artifact that can tell us something about how an organism may have appeared and moved about.
What is a Trace Fossil?
500
They were the first type of rocks to form on the planet.
What are igneous rocks?
500
He/she is the scientist that can help determine the relative age of rocks by studying fossils.
Who is a paleontologist?
500
It is the reason why it is difficult to determine the relative age of rock strata that has been significantly moved from its original position.
What is the Principle of Original Horizontality?
500
It is my age after three half-lives - if half of me decays in 1.3 billion years.