The type of plate boundary associated with earthquakes.
What are transform boundaries.
100
Volcanoes can occur at these plate boundaries.
What are convergent and divergent.
100
The age we believe the Earth to be.
What is 4.5 billion years old.
200
The number of layers within the Earth
What is four.
200
The movements of the three types of plates.
What is towards each other (convergent), away from each other (divergent) and side to side against each other (transform).
200
The instrument that detects and records earthquakes.
What is a seismograph.
200
This plate boundary can form mountains.
What is convergent.
200
The solid ball of iron in the center of the Earth.
What is the inner core.
300
Heat and pressure do what as you get closer to the center of the Earth.
What is increase
300
The large continent that existed over 200 million years ago.
What is Pangea
300
The scale that measures the amount of energy released by (strength/magnitude) and earthquake.
What is the Richter Scale.
300
The difference between lava and magma
What is magma is inside the Earth, and lava is on the outside.
300
Two example used to prove the existence of Pangea.
What is continents fitting together like puzzle pieces (South America and Africa for example), fossils of the same animals in multiple continents (South America and Africa again).
400
The layer of the Earth made of melted iron and nickel.
What is the outer core.
400
Roughly, the number of tectonic plates that make up the Earth's crust.
What is 20.
400
The center of an earthquake.
What is the epicenter.
400
The area surrounding the Pacific Plate that contains over 90% of the Earth's stratovolvanoes.
What is the Ring of Fire.
400
True/False Volcanoes can occur underwater.
What is true
500
This layer is made of melted rock. It is solid, yet flows like a liquid.
What is the mantle
500
The definition of plate tectonics.
What is the theory that the Earth's crust is made up of moving plates that float over the mantle.
500
This happens when an earthquake occurs underwater.
What is a tsunami.
500
The name of a volcano located in Washington state. (The video said that it 'blew itself up').
What is Mount St. Helens.
500
True/False The Earth looks the same now as it did billions of years ago.