Layers of the Earth
The most dense layer of the Earth?
What is the inner core?
The two types of waves produced by an Earthquake?
What are S-waves and P-waves?
In a convection current, when materials heat up, do they RISE or FALL?
What is rise?
The tectonically active region of Africa that is a famous example of two plates pulling apart.
What is The Great Rift Valley?
The element in the outer core that is responsible for generating earth's magnetic field.
What is iron?
The layers of the Earth, from hottest to coolest.
What is the inner core, outer core, mantle, crust.
The type of earthquake wave that only moves through solids?
In a convection current, when materials cool down, do they RISE or FALL?
What is fall?
The country that experiences over 20% of the earth's magnetite 6.0+ earthquakes.
What is Japan?
The layer of the earth that contains the minerals that generate earth's magnetic field.
The layer(s) of the Earth that are solid?
What is the inner core, crust?
(maybe mantle, it's semi-solid)
The type of earthquake wave that can move through both solids and liquids?
What is p-waves?
Draw a convection current in the mantle.
See photo.
The San Andreas fault is an important risk factor for earthquakes in this U.S. state.
What is California?
Draw an arrow on your whiteboard.
Pointing out the back window toward the softball fields.
The layer(s) of the Earth that are liquid?
What is the outer core?
(maybe mantle, it's semi-solid)
The layer(s) of the Earth that s-waves reflect off of?
What is the outer core?
(Because it is solid)
What provides the energy source to drive the convection current in the mantle?
What heats it up?
What is the heat from the core?
(left over kinetic energy from collisions in the earth and energy from radioactive decay in rocks making up the core)
The island nation that experiences a significant number of shallow earthquakes, resulting in a lot of low level volcanic and seismic activity.
What is Iceland?
The name of the mineral first discovered by the Greeks that was used as a magnet, leading to the development of compasses?
What is magnetite?
(Lodestone)
The evidence we have that some of the Earth's layers are soldi while others are liquid?
Provide at least two examples of evidence.
What is the patterns earthquake waves follow when moving through the center of the earth?
Magnetic reversals suggest that the iron-containing layer must be fluid.
Describe what the "shadow zone" of an earthquake is.
What is the area of the Earth that does not "feel" or detect the waves of an earthquake because they are reflected off of the earth's outer core?
Explain why a convection current might cause a volcano to occur on the surface of the Earth.
You can draw or write to explain your thinking.
What is magma from the mantle being pushed up in a convection current, and if it encounters a weak spot in the crust it can create a volcanic hotspot.
We learned about the ways that this volcano island chain shrinks and grows over time as seismic activity occurs.
What is Krakatoa (in Indonesia)?
Describe what changes the direction that a compass points at different times in the earth's history.
The orientation of the iron in the fluid outer core shifts.