Gingerbread
Which seismic waves are faster?
P Waves
Evidence for ___________________ includes matching coastlines, identical rocks and fossils, clues from past glacial movement.
Continental Drift
New sea floor is constantly being formed through the process of _________________.
Sea-floorspreading
Which waves can ONLY travel through solids?
S Waves
What state was formed from hot spot volcanoes?
Hawaii
What was the name given to the super continent where are continents were connected?
Pangea
_________________ current is one process thought by scientists to be a cause of tectonic plate movement.
Convection
Outer most layer of the Earth.
Crust
Inner most part of the Earth.
Core
Middle layer of the Earth.
Mantle
How do scientists study the layers inside the Earth?
Seismic Waves
A solid layer of Earth made of weak, slow-flowing rock,
Asthenosphere
Where two tectonic plates are moving apart.
Divergent
What triggers a tsunami?
Earthquake under the ocean.
Where two tectonic plates are moving past each other.
What type of stress is associated with a convergent boundary?
Compression
What type of stress is associated with a divergent boundary?
Tension
What type of stress is associated with a transform boundary?
Shear Stress
What can cause a chain of volcanic islands to form far from plate boundaries?
hot spots
The boundary of the Pacific Plate where 50% of all volcanoes and earthquakes occur is known as?
Ring of Fire
A sedimentary rock layer in its original position is older than the layers above it and younger than the layers below it.
Law of Superposition
What type of rock has the best chance of becoming a fossil?
Sedimentary
A break or a disturbance in the geologic record that is made when rock layers are eroded or when sediment is not deposited for a long period of time.
Unconformity
Sometimes a fossil is formed as a result of the movement of an organism in soft sediment. What type of fossil is this called?
Trace
Determining whether an object or event is older or younger than other objects or events.
Relative Dating