Show:
Layers of Earth
Plate boundaries
Plate tectonics
Earthquakes
Volcanoes
100
Compositional layer of the Earth is dense solid mostly made of nickel and iron
What is the inner core?
100
Most divergent boundaries lie under the world's oceans. This landform is created at divergent boundaries
What is a rift valley?
100
Scientists think continents were once a large single landmass that broke apart and then the continents slowly DRIFTED to their present locations.
What is continental drift?
100
Three types of faults.
What are normal, strike-slip, and reverse faults?
100
When magma has low silica content, flows easily with gases bubbling out gently and lava oozing producing pahoehoe and aa.
What is a quiet eruption?
200
Convection currents take place in this layer of the Earth
What is the asthenosphere?
200
Subduction is one plate pushing underneath another plate. If an oceanic plate and a continental plate collide, one will push underneath the other one.
What is the oceanic plate?
200
The forces that cause plates to move toward, away, and past each other
What are convection currents?
200
The position on the Earth's surface where an earthquake begins.
What is an epicenter?
200
tall, cone-shaped mountains in which layers of lava alternate with layers of ash
What is a composite volcano?
300
Going from inner layer to outer layer, name the 3 main compositional layers.
What is the core, the mantle, and the crust?
300
The natural disaster that occurs when two plates slide past each other and release a burst of energy.
What is an earthquake?
300
This explains the formation, movement, and subduction of Earth's plates.
What is the theory of plate tectonics?
300
Waves that travel through solids and liquids, compressing and expanding the material they pass through
What are primary waves (P waves)?
300
A weak spot in Earth's crust where molten material or magma comes to the surface.
What is a volcano?
400
The denser of the two types of crust
What is oceanic crust?
400
Two plates interacting creating a mountain
What is a continental-continental convergent boundary?
400
When a plate is pulled under another plate.
What is subduction?
400
Waves that produce severe ground movement with a wavelike motion.
What are surface waves?
400
A system of passageways through which magma inside a volcano.
What is a magma chamber, pipe, vent, lava flow, and crater
500
This physical layer is divided into pieces called tectonic plates.
What is the lithosphere?
500
The edges of plates meeting a line.
What is a plate boundary?
500
Breaks in the Earth's crust
What are faults?
500
Waves that carry energy of an earthquake away from the focus
What are seismic waves?
500
Five landforms formed from magma
What is a volcanic neck, dike, sill, batholith, and dome mountain?