This is the theory that states that the earth is made of plates that are in constant motion
Continental Drift
This is the point of impact within the earth where tectonic plates collide. The actual site of the earthquake
Focus
This is the name of molten material when it reaches the surface of the earth
Lava
This landform occurs when a volcano caves in on itself leaving a large open hole
Caldera
What is point A?
Focus
This is the name (first and last) of the scientist that formulated the continental drift theory
Alfred Wegner
This is the device that measures wave activity
Seismograph
This type of lava is very hot and fast moving. It is known for its smooth texture as it dries
Pahoehoe
This landform is made when water becomes heated by underwater magma and pools at the surface
Hot Spring
What is point B?
Epicenter
This type of boundary occurs when two tectonic plates move TOWARD each other
Convergent
This type of wave moves in a push-pull motion and is the fastest wave
P-Wave
Resistance to flow is known as...
Viscosity
This landform is created when water is cooled by underground magma but is stuck in a crack or crevice. As pressure build, it eventually erupts
Geyser
B labels what type of waves? S or P?
S wave
What do scientists think causes the plates to move? (what and where)
Convection currents in the mantle
This type of fault occurs at a divergent boundary when one plate slips DOWN the fault line
Normal Fault
This type of volcano is largest in width but not in height. It is made by slow lava flow over time. This volcano has created the hawaiian islands
Shield volcano
This landform is created when magma solidifies in the pipe of a volcano
Volcanic neck
What is A?
Side vent
Write 3 pieces of evidence that continental drift has occurred. (Need 3 for full points!)
Fossils, Land Warping, Puzzle pieces
What is the name of the scale that measures earthquakes by OBSERVABLE damage
Mercalli Scale
This volcanic hazard is an avalanche of molten material, toxic gases, and lava bombs. It can not be avoided
Pyroclastic Flow
Lava plateau
What is B?
Pipe