Dating
The amount of time it takes for one-half (1/2) of the radioactive sample to decay.
What is Half-Life?
The age of the Earth.
What is 4.6 billion years?
Area where ground water is stored.
What is an Aquifer or Zone of Saturation?
Age of oceanic crust as you move closer to a mid-ocean ridge.
What is Younger?
Type of fault where most earthquakes happen.
What is a Transform Boundary?
Law that states that in an undisturbed rock sequence, the oldest rocks are at the bottom.
What is the Law of Superposition?
An event that determines the transition to the next era.
What is a Mass Extinction?
Long form of the acronym WED.
What is Weathering, Erosion, and Deposition?
The process where an oceanic plate sinks under a continental plate at a convergent boundary.
What is Subduction?
Driving force behind plate movement.
What are Convection Currents?
A fossil that indicates the relative age of the rock in which it is found.
What is an Index Fossil?
Era of the dinosaurs.
What is the Mesozoic Era?
The three types of weathering.
What is Mechanical, Biological, and Chemical?
Evidence for the theory of continental drift. (name at least 2).
What is Puzzle Fit, Fossils, Climate, and/or Rock Distribution?
Type of seismic waves that are fast moving and less destructive.
What are P-waves?
Isotope used to date once living things.
What is Carbon-14?
Important molecule produced by cyanobacteria (Bonus: Name of the sedimentary formations they create)
What is oxygen? (What are stromatolites?)
Area in an aquifer where the spaces between rocks are partially filled with air and water.
What is the Zone of Aeration?
Location where seismic waves from an earthquake originate.
What is the focus?
Name of this fault:
What is the San Andreas Fault?
The answer to this question: A sample of cesium-137 starts with a mass of 200 mg. After 90 years, the sample has a mass of 25 mg. What is the half-life of cesium-137?
What is 30 years?
Divisions of time from largest to smallest.
What are Eons, Eras, Periods, and Epochs?
Glaciers scraping rocks across the earth's surface.
What is Weathering?
Theory proposed by Harry Hess that contributed to the theory of plate tectonics.
What is Seafloor Spreading?
Feature(s) that from at a convergent boundary between an oceanic and continental plates. (Bonus: Real-life example)
What is a Trench and/or Volcanic Mountain Range?