Earth's layer of hard, solid rock
What is the outer layer?
A sudden shaking of Earth's surface
What is an earthquake?
Name of the supercontinent
What is Pangea?
Where 2 plates meet
This ancient creature was believed to be one of the first reptiles to live in and around water.
What is the Mesosaurus?
One type of evidence Wegner considered as he developed his ideas about plate motion.
What are the shapes of the continents (fitting together similar to a puzzle), identical landforms on other continents, similar fossils on other continents.
One of the very large sections of hard, solid rock that make up Earth' outer layer
What is a plate?
Layer of soft, solid rock underneath Earth's plates
What is the mantle?
Name of part of the supercontinent that includes South America, Africa, India, Australia, and Antarctica
What is Gondwanaland?
One plate moves underneath the other plate and sinks into the mantle
What is a convergent plate boundary?
Evidence of matching animal fossils from two separate continents _____________________ and _____________________
What are South America and Africa?
Plate material that makes up the ocean floor is much younger, how could this be explained?
What is the plates of the ocean floor always being destroyed at convergent plate boundaries.
Something we observe to be similar over and over again
What is a pattern?
Any of the many processes in which gas, lava, and ash are pushed out on the surface of Earth
What is volcanic activity?
Term for an ancient organism that has been preserved in rock
What is a fossil?
Rock rises from the mantle and hardens, adding new solid rock to the edges of both plates
What is a divergent plate boundary?
Why do Scientists often study cross-sections of objects?
To better understand what the inside of something looks like.
Alfred Wegner found fossils of tropical plants on what continent?
What is Antarctica?
A long, deep indentation in the ocean floor formed when 2 plates meet
What is a trench?
An underwater mountain range formed when 2 plates move apart
What is a mid-ocean ridge?
Wegener's hypothesis was rejected because he could not prove this
What is: How do the plates move?
When one plate moves underneath the other plate and sinks into the mantle.
What is a convergent plate boundary?
What would you conclude about the pattern of volcanoes according to this map?
Most volcanoes occur along plate boundaries.
Nicholas Steno, a Danish Scientist once referred to shark teeth as these _____________.
What are "tongue stones?"
How often or how fast something happens
What is rate?
A diagram that shows what the inside of something looks like.
What is a cross-section?
The instrument Bob Dziak and his team used to "listen to the Earth" below the ocean's surface
What is a hydrophone?
The rate at which the South American and African Plate are currently spreading apart.
What is 3.0 cm per year?
This ranges from several hundred million years to two billion years.
What is an eon.
It is almost impossible to fathom a timeline that is 4.6 billion years long, so Scientists created this to break Earth's history into different units of time referred to as this__________,
What is a Geologic Time Scale?
This is a set of interacting parts to form a complex whole.
What is a system?
This is an object, diagram, or computer program that helps us understand something by making it simpler or easier to see.
What is a model?
The work of many Scientists, including Alfred Wegener, led to this theory _________.
What is the Theory of Plate Tectonics?
A specific example of a convergent plate boundary.
What are The Mariana Trench, Himalayas, Andes, Aleutian Islands.
According to this map, the Ouachita Mountain range was formed during what Era?
What is the Paleozoic Era?
List the Geologic Time Scale from Largest to the Smallest.
What are Eon, Era, and Period?