Rock On!
In undisturbed rock layers, the oldest rock layers are found at the bottom and the younger layers are found at the top.
What is the Law of Superposition?
The fossilized remain of an organism that lived for a short, specific period of geologic time, used by scientists to define, date, and correlate rock layers.
What is an index fossil?
Must be made up of atoms
Must have volume
Must have mass
Must be a solid, liquid, or gas
What are the 4 requirements of all matter?
A Russian chemistry teacher who created a chart to organize the elements.
Who is Dmitri Mendeleev?
By atomic number
How is the periodic table of elements organized?
When a rock is found inside of another rock, the rock on the inside is older than the rock surrounding it.
What is a component?
Matching rocks from different locations that are the same age and type.
What are corollary rock layers?
Name the three sub-particles within an atom.
What are electrons, protons, and neutrons?
Coined the term radioactivity
Who is Marie Curie?
What does the period tell us?
The law that tells us that rock layers form in flat, horizontal layers.
What is the Law of Original Horizontality?
*short-lived (limited to a brief period of geologic time)
*widely distributed (found globally or over a vast geographic area)
*abundant (found in high numbers)
What are the 3 characteristics of index fossils?
Protons and neutrons
What is found in the nucleus of an atom?
Studied pea plants and used them to determine how genetic material is passed from parent to offspring.
Who is Gregor Mendel?
Halogens and Alkali Metals
What are the 2 groups that are the most reactive on the periodic table?
When a layer cuts through several layers. The one that cuts through the others is newer than the layers it cuts through.
What is a cross-cutting relationship?
A geological method used to determine the sequential order of past events—which rocks, fossils, or artifacts are older or younger than others—without establishing their absolute numerical age.
What is relative dating?
Subtract the atomic number from the atomic mass.
What is how to calculate the number of neutrons in an atom?
Used x-ray crystallography in their work
Who is Rosalind Franklin?
The least reactive group on the periodic table
What are the noble gases?
Faults, cross cutting relationships, non-deposition, erosion.
What are things that cause unconformities?
A scientific technique used to determine a more specific numerical age, in years, of rocks, fossils, or archaeological artifacts.
What is absolute dating?
Can be made up of two or more of the same elements or two or more different elements.
What is a molecule?
What is Natural Selection? OR What is Survival of the Fittest?
The sub-particle of an atom that determines its reactivity.
What is an electron?