Earth's Layers
This is the furthest layer from the crust and is made of solid material.
What is the Inner core?
This event happens when energy is released as seismic waves shakes the Earth's crust.
What is an earthquake?
This is the name of the continent that we are currently on.
What is North America?
What is Basalt?
This is melted rock that is sometimes stored in chambers in the Earth's mantle.
What is magma?
The Earth's layer that has tectonic plates
What is the mantle?
This is a fracture in the Earth's crust.
What is a fault?
What is one state we have talked about in the United States we might experience Earthquakes?
What is California?
This machine shows seismic waves as jagged up and down lines.
What is a seismograph?
These volcanoes have not erupted in 10,000 years at least.
What are extinct volcanoes?
Tectonic plates are found in what part of the mantle?
What is the top of the mantle?
This is a name for lava that solidifies into a hard rock form.
What is basalt?
This supercontinent gets its name from the Greek and means "All Earth."
What is Pangaea?
A good way to map tectonic plates is to track earthquake frequency. That is because earthquakes often happen along these.
What are Plate boundaries?
An example is Yellowstone National Park in California. These hot springs form when water drains down into openings in the ground above magma chambers. The result is an eruption of hot water.
What are geysers?
What are the two types of crusts?
What are continental and oceanic crusts?
The release of energy from a fault happens here.
What is the focus?
This hypothesis states that the continents are slowly separating and at one point were combined into one supercontinent.
What is Continental Drift?
Tsunamis occur when this happens after an earthquake takes place in the ocean floor. .
What is seafloor shifting?
The pacific plate is one of the Earth's largest plates. Along its boundaries the pacific plate is subducting under several other plates. Geologists call these zones...?
What are subduction zones?
This part of one of the layers of Earth is neither solid nor liquid.
What is the middle of the mantle?
The point directly above the focus is called the....
What is the epicenter?
This is what happens when two tectonic plates collide and one goes under the other.
What is subduction?
This man, using evidence like similar rock formations and coal deposits in different continents across each other, developed the idea of continental drift hypothesis.
Who is Alfred Wegener?
Not all volcanoes form along plate boundaries. Some occur in very hot regions deep in the mantle. Geologists call these places...?
What are hotspots?