Definitions
The weather conditions in an area over a long period of time
What is climate?
Fossils are the trace remains of organisms that are still living
False
What state is La Brea Pits located in?
California
Track or burrow: This are footprints made by animals in soft sediment that later become hard rock
This is any method of determining whether an event of object is older or younger than other events or objects
What is relative dating
A fossilized structure, such as a footprint or a coprolite, that formed in sedimentary rock by animal activity on or within soft sediment
What is a trace fossil
Fossils can be skeletons or body parts, shells, burrows or ancient coral reefs
True
What type of rock are most common for fossils to be preserved in?
Sedimentary
What is it called when all of the continents were in a single land mass about 200 million years ago?
Pangaea
A principle that states that younger rocks lie above older rocks if the layers have not been disturbed?
What is superposition
This is the scientific study of the origin, history and structure of Earth and the processes that shape earth
What is uniformitarianism
Name the four Eons that make up the Geologic Time Scale
Hadean, Archean, Proerozoic, Phanerozoic
Track or Burrow: This is a trace fossil that are pathways or shelters made by animals that dig into sediment.
Burrow
What era on the geologic time scale are we currently in?
What is cenozoic?
An ordered arrangement of rock layers that is based on the relative ages of the rocks and in which the oldest rocks are at the bottom
Geologic column
This is a long cylinder of ice obtained from drilling ice through ice caps or ice sheets used to study past climates
What is ice core
The Precambrian Time was between 4600 and 542 Million Years Ago
True
What three periods make up the Mesozoic era?
Triassic, Jurassic, Cretaceous
How many periods make up the Paleozoic Era?
6
Any method of measuring the age of an event or object in years
Absolute dating
What is fossil
True or false: Tilting happens when earth force moves rock layers up and down unevenly
True
Name a catastrophic event
Answers vary
Describe what half life is?
Half life is the time needed for half of a sample of a radioactive substance to undergo radioactive decay to form daughter isotopes
The method of determining the absolute age of an object by comparing the relative percentages of a radioactive isotope and a stable isotope
What is radiometric dating