Which of the following is the best evidence that Earth's continents were once in vastly different positions than they are today?

Wegener used the fit of the continents as evidence to support his hypothesis of Continental Drift.

Wegener used matching matching fossils of the same organisms on different continents as evidence to support his hypothesis of Continental Drift.

Alfred Wegener thought South America and Africa have similar coastlines because...

What was Alfred Wegenerś Continental Drift theory?

What is the force that moves the continents?

Underwater mountain ranges are called ____________.

The OLDEST rocks on the seafloor are located?

The YOUNGEST rocks on the seafloor are located?

Who is the person credited with developing the theory of continental drift?

The cycle that powers the seafloor spreading, continental drift and tectonic plates it called

What 3 kinds of evidence were used to prove that the seafloor spread?

Process by which new ocean crust forms.

_______ are mountain chains on the ocean floor.

Mid-ocean ridges are the sites of intense _________ activity.

A theory explaining how the tectonic plates (or lithosphere plates) on earth's surface move

A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle

The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary

Tectonic Plate movement is caused by ______________.

The place where to plates meet?

A large ground-shaking event vertically displaces water sending a very energized wave toward shore?

The pieces that make up Earth's surface?

Occurs when plates crash into or pull away from each other and hot magma from below rises up to the surface in an eruption?

Occurs when plate boundaries get stuck together, but the plates themselves keep moving?

True or False: It is possible for the same species that once lived in the same place to be found on 2 separate continents?

A sudden shaking of Earth's surface?

When one tectonic plate is pulled under another and into the mantle, it's called:

When a continental plates collide what may be formed?

If a hot spot lasts long enough what may be created?

When tectonic plates slide beside each other what type of boundary is it?

Identify this type of plate boundary:

Identify the type of boundary:

What are the two types of Earth's crust?

_____ boundaries in which tectonic plates that move away from each other.

________ boundaries in which tectonic plates can move towards each other.

______ boundaries in which tectonic plates slide pass each other.

Underwater canyons are called ____________.

Underwater mountain ranges are called ____________.

Where is old oceanic crust recycled?

Where is new oceanic crust formed?

Hot magma (melted rock) is ______ dense than the solid crust.

Plates Rub Against Each Other

Plates Come Together

Plates Spread Apart

Forces that changes rock shape or volume is called

Normal fault has a ______________________ boundary.

Reverse fault has a ______________________ boundary.

Reverse faults create _________________.

Normal faults create _________________.

Reverse faults ______________________ at an angle.

Normal faults ______________________ at an angle.

Strike slip faults move by ____________________.

This area is called the....

Which type of crust is the densest?

The diagram shows a cross section of a tectonic plate boundary. Which terms best describes features 1,2 and 3?

A difference between the the oceanic crust and the continental crust is that the oceanic crust is

Which type of crust is less dense?

Crust can be either oceanic, which is thin and dense, or continental, which is thick and less dense; both are known as crust rock material.

Which box has a higher density?

The Ring of Fire, where many earthquakes occur, is located around the rim of which ocean?

Which seismic wave is the first to reach a seismic station?

Which type of seismic wave causes the most destruction to property?

Which type of seismic wave can move through solid layers of the earth but not through the liquid outer core?

Which seismic waves are call "push/pull" because they compress and extend as they move through the earth?

The point within the earth where the earthquake originates.

Match the stress on the rock with the type of Fault.

Match the stress on the rock with the type of fault.

Where is the epicenter of this earthquake?

How is energy transferred from the focus underground

to the epicenter on the surface?

Earthquakes happen near the Pacific Ocean because ____.

Which description of Earthquakes is most accurate?

The vibrations in the earth caused by the sudden release of energy is called an ______________.

What is the point on the surface of the earth directly above the focus of an earthquake?

What is a series of sea waves caused by underwater earthquakes called?

What is the zone of intense earthquake and volcanic activity called?

As the waves travel through shallow water toward the land they get

Tsunami is a ________ word, meaning ____________.

What is a Tsunami?

Most Tsunamis occur in the

A Tsunami can travel more than a mile onto land.

When a Tsunami approaches shore, the waves

A Tsunami wave can be as tall as

A Tsunami wave can move at over _______ miles per hour.

Tsunamis are caused by

Explosive eruption that hurls ash, hot gases, cinders, and bombs from the main vent and travels at fast speeds down the volcano is called a . . .

Lava fragments that are like pebbles in size are called ______.

Fragments that are about as small as grains of sand.

Large lava fragments that are like baseball in size.

What is the definition of an extinct volcano?

What is a dormant volcano?

TRUE or FALSE: A volcano that erupts quietly will produce a lot of cinders, ash, and bombs

Magma becomes lava when it reaches a volcano's ______.

Rank the volcanic stages from LEAST likely to MOST likely to erupt.

Volcanoes that can erupt at any time

Volcanoes that are “resting” but can wake up and erupt

Gases bubble out gently, lava will ooze out of vent quietly and flow for many kilometers, how the Hawaiian Islands were formed

Trapped gases in the pipe of the volcano build up pressure until they explode which causes a pyroclastic flow that hurls out a mixture of hot gas, ash, cinders and bombs

Do Shield Volcanos have explosive eruptions or non-explosive eruptions?

Do Composite Volcanos have explosive eruptions?

Are all volcanos violent?

Lava, rock fragments, gases and ash coming out in one spot on the surface of the Earth it forms a mountain and is called

Smaller volcanoes that typically throw ash and other rock fragments into the air during eruption

Large, broad volcano that is formed from layers of lava.

Also known as Strato Volcanoes, this volcano is made from alternating layers of ash and lava is called a(n) _________________ volcano