Fossils in which the spaces are filled in with minerals from groundwater.
What is PERMINERALIZED REMAINS
100
The oldest rocks are on the bottom and the rocks become younger towards the top.
What is THE PRINCIPLE OF SUPERPOSITION
100
Atoms consist of a dense central region called the nucleus, which is surrounded by a cloud of negatively charged particles called electrons.
What is RADIOACTIVE DECAY
100
These are the remains, imprints,or traces of prehistoric organisms.
What is FOSSILS
100
These are gaps in rocks sequences.
What is UNCONFORMITIES
200
A thin film of carbon residue that forms a silhouette of the original organism.
What is CARBON FILM
200
A rock's age compared to other or many rocks.
What is RELATIVE AGE
200
In some isotopes, a neutron breaks down into a proton and electron
What is ALPHA AND BETA DECAY
200
The principle that states that the Earth processes occurring today are similar to those that occurred in the past.
What is UNIFORMITARIANISM
200
This is an isotope is the time it takes for half of the atoms in the isotopes to decay.
What is HALF-LIFE
300
Permineralized remains are used in this process.
What is MINERAL REPLACEMENT
300
This type of unconformity occurs when metamorphic or igneous rocks are uplifted and eroded.
What is NONCONFORMITY
300
Carbon-14 is useful for dating bones, wood, and charcoal up to 75,00 years old.
What is RADIOCARBON DATING
300
The time an isotope takes for half of its atoms to decay.
What is HALF-LIFE
300
A scientist that studies fossils.
What is PALEONTOLOGIST
400
Recourse that is becoming hard to find and is a good fuel source.
What is COAL
400
This type of unconformity forms when sediment layers are tilted and uplifted.
What is ANGULAR UNCONFORMITY
400
Many sedimentary rocks are made up of particles eroded from older rocks. dating these pieces only gives the age of the preexisting rock from which it came
What is AGE OF DETERMINATIONS
400
Measuring the absolute age if a rock.
What is RADIOMETRIC DATING
400
By measuring the ratio of parent isotope to daughter product in mineral and by knowing the half-life of the parents in many cases you can calculate the absolute age of the rock.
What is RADIOMETRIC DATING
500
Mineral replacement, carbon film, molds, and casts are all types of this.
What is TYPES OF PRESERVATION
500
Sediment rock is formed in this direction or way.
What is HORIZONTALLY
500
3.96 million year old dating rocks
What is RADOMETRIC ROCKS
500
A rock formed when sediments are cemented and compacted or when minerals are precipitated from solution.
What is SEDIMENTARY ROCK
500
In undisturbed layers of the rock, the oldest rocks are on the bottom and the rocks become progressively younger toward the top.