Vocabulary
Key Concepts
Plate Boundaries
Earth's Layers
Evidence of Plate Motion
100
Earth’s outermost layer of hard, solid rock that is underneath the soil, vegetation, and water.
What is the outer layer or crust?
100
Earth's outer layer is divided into sections called ____________.
What are plates?
100
Two plates move away from each other.
What is divergent?
100
Solid, most dense layer at the center of Earth.
What is the inner core?
100
What type of plate boundary did the Himalayan Mountain Range form on?
What is the convergent boundary?
200
A diagram that shows what the inside of something looks like.
What is a cross section?
200
The plates of Earth's outer layer __________________.
What is move?
200
Two plates move toward each other.
What is convergent?
200
True or False- Some continents are no longer touching because earthquakes and volcanoes pushed them apart.
False-
Continents are always moving slowly due to movement in the mantle.
200
What type of boundary is responsible for the East African Rift?
What is divergent plate boundary?
300
An underwater mountain range formed when two plates move apart.
What is a mid-ocean ridge?
300
Earth's plates move on top of a soft, solid layer called the __________________.
What is the mantle?
300
The type of boundary that lies between South America and Africa.
What is divergent boundary?
300
The weak, partially melted layer beneath earth's crust.
What is the mantle?
300
What did Dziack use to study the evidence of plate motion?
What are sound waves?
400
A long, deep indentation in the ocean floor formed when two plates move together
What is a trench?
400
If you removed all the vegetation, soil, and water from the surface of the earth this would be left.
What is hard, solid rock?
400
Mid-ocean ridge, trench, and volcano.
What is landforms are at plate boundaries?
400
True or False- Continents slowly moved apart as new plates from underneath got added between them over millions of years.
True-
The soft, solid mantle fills the space.
400
True or False: You will see evidence of plate motion at a plate boundary in your lifetime?
False- although the plates are constantly in motion, it is incredible slow and you will not notice a change within your lifetime.
500
An extinct reptile that lived about 300 million years ago.
What is Mesosaurus?
500
At divergent plate boundaries, rock rises from the mantle and _______, adding new solid rock to the edges of both plates.
What is hardens?
500
The type of current that is responsible for plate motion.
What is convection?
500
The type of solid that is beneath the Earth's crust
What is the soft solid?
500
What is the name of the volcanic island chain formed by the movement of the Pacific Plate over a hot spot?
What is the Hawaiian Islands?