What is the first type of wave felt in an earthquake?

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as ___________________.

P-waves are also known as _______________________ that compress and expand particles in the direction the wave travels.

These seismic waves are faster but weaker.

Most geologists think that the movement of Earth's plates are caused by ________________________

The geological theory of __________________ states that pieces of Earth's lithosphere are in constant, slow motion.

A place where two plates slip past each other, moving in opposite directions, is known as a _____________________

Scientist think that convection currents flow in Earth's ______________.

The place where two plates come together is known as a ___________________

In the picture to the side of sea-floor spreading. How are the ocean crusts moving?

What are the two types of crusts?

The Himalayas in Asia are an example fold mountains these occur at what type of plate boundary?

What is Pangaea?

A ________________ measures the size of an earthquake.

Earthquakes occur in the _________________________.

Seismic waves travel ______________________.

Where does the energy from an earthquake originate?

Earthquakes and volcanoes are most likely found in which locations?

When an oceanic plate and a continental plate collide, which one will subduct?

This landform can occur at a divergent plate boundary.

____________________ a hypothesis that new sea floor is created at mid-ocean ridges and that in the process the continents are pushed apart from each other.

What should you NOT DO during an earthquake?

Why is it important to be aware of places prone to earthquakes?

One piece of evidence that supports Alfred Wegener's hypothesis is that.........

Identify the correct term for the location of point B.

The second seismic wave to be detected is the _______________

What is the minimum number of seismic stations needed to determine the location of an earthquake's epicenter?

In an earthquake, the point underground where the rocks first begin to move

These waves move along Earth's surface and cause the most damage.

Which diagram shows a plate boundary that is typical for the formation of volcanoes?

Use the diagram to answer the question. What results as the two oceanic plates converge?

What kind of plate boundary is shown here?

What geological feature/event you be most likely to find at a transform boundary?

What geological feature/event you be most likely to find at a divergent boundary between two pieces of oceanic crust?

A subduction zone is formed.........

__________________ is the scientist credited with the theory of continental drift.

What two landforms are created or occur near every subduction zone?

If an earthquake occurs at the bottom of the ocean floor what could form as a result?

Aside from earthquakes, what is the only thing you will find at transform boundaries?

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is know as

The line of volcanic activity that surrounds the Pacific Ocean basin is the.....

The huge hole left by the collapse of a volcanic mountain is called?

Magma leaves a volcano through a......

Which scale measures the amount of displacement along a fault line, is more accurate, and measures energy released?

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is know as

Volcanoes that are not very tall and have a clearly defined crater are called_________________.

This type of volcano is made up of layers of lava.

This type of volcanoes are the tallest and most explosive during eruptions.

Which of the following is not an example of a hazard from a volcano?