Earth's Layers
What layer is completely liquid?
Outer Core
250 million years ago what was the supercontinent called?
Pangea
Name the three boundary types
convergent, divergent, transform
What is a plate boundary?
The place where two tectonic plates meet
Name the 2 body waves
P waves and S waves
What does the Earth’s magnetic field do?
Protect the the earth from solar radiation & solar winds
True or false Arnold Wegener wrote the continental drift
False - Alfred Wegener
What are plate tectonics?
The broken up pieces of Earth's crust that move slowly and shape the Earth
If the hanging wall slips downward, what fault is this?
Dip slip or normal fault
What wave can travel through solids, liquids, and gasses?
P waves
Name all the layers of the Earth
Crust, mantle, outer core, inner core
What is the continental drift theory? What did it explain?
It was an explanation of the continents are moving or drifting apart or together
What forms when two continental plates come together?
Mountains
If the hanging wall shifts upward, what fault is this?
Reverse or thrust fault
How are Earthquakes measured?
Seismographs
What layer do plate tectonic slide on top of?
Mantle
Name all four pieces of evidence Wegener used in his theory.
The pieces fit like puzzle pieces, fossils and rocks, Mountain formations, paleoclimate
When an oceanic plate collides with a continental plate what zone is this?
Subduction zone
At what boundary do plates slide past each other?
Transform Boundary
What is the hypocenter?
Actual location within the Earth where an earthquake starts
What causes Earth’s magnetic field?
The rotation of the Earth and the core
Explain two pieces of evidence
Up to teachers
What moves the plate tectonics?
Convection currents in the mantle
What kind of boundary is the Mid-Atlantic ridge?
Divergent Boundary
What is the epicenter?
Point on the Earth’s surface directly above where an earthquake originates