Continental Drift
Who came up with the theory of Continental Drift?
Who is Alfred Wegener
Plate boundary where plates move away from each other.
What is divergent boundary
Where do earthquakes most frequently occur?
What is along fault lines.
What is the outermost layer of the earth?
What is the lithosphere or crust.
What scale is used to measure earthquakes based on the amplitude of their strongest wave?
What is Richter Scale
What do we call the large supercontinent that Wegener believed existed 200 million years ago?
What is Pangaea
What is the earthquake/volcano prone area that extends around the Pacific Ocean from Asia, North America, and South America
What is the Ring of Fire
Magma is found ________ the earth, and lava is when magma reaches the __________.
What is inside/surface.
What scale measures earthquakes based on damage and level of ground shaking?
What is Mercalli Scale
3 pieces of evidence that were provided to support the theory of continental drift.
What is 1. Matching Fossils 2. Matching Coastlines 3. Matching Rocks/Mountains?
Plate boundary where the plates slide past each other horizontally
What is transform boundary
The type of wave associated with an earthquake.
What is a seismic wave.
A volcano that has a broad flat cone with gently sloping sides.
What is a shield volcano
What piece of equipment is used to measure the earthquake waves?
What is a seismograph.
A theory that explains the continental drift theory from a young Earth perspective.
What is the hydroplate theory?
What is it called when two plates collide and the denser plate slides underneath the less dense one.
What is subduction.
Point of origin of an earthquake
What is focus.
A volcano that sometimes erupts violently, has steep sides and is composed of alternating layers of lava and ash.
What is a composite volcano.
Each step up on the Richter scale equals a difference in _______ times.
What is 10 times.
The Seafloor Spreading Hypothesis explained that the seafloor must be spreading or diverging. This came about by discovering a ______________ wrapped around Earth.
What is Mid-Ocean Ridge.
What actually drives the motion of the earth's plates?
What is convection currents.
The point on the Earth’s surface, directly above the focus
What is epicenter
A small volcano that erupts very violently.
What is a cinder cone volcano.
What is the fault line located closest to us here in Independence?
What is the New Madrid