Layers of the Earth and Tectonic Plates Flashcards
Approximately 225 million years ago, the earth’s continents were grouped into one landmass. What is the landmass called?
Pangaea
What is the border between two tectonic plates called?
Boundary
When did the supercontinent Pangaea start to break up?
200 million years ago
True Or False: Continental crust is thicker than oceanic crust.
True
Which of the earth’s layers is broken into several large tectonic plates?
Lithosphere
What is the subduction zone?
where Earth’s tectonic plates dive back into the mantle
This solid layer of the earth is made of mostly iron and nickel.
Inner Core
What kind of plate boundary runs across Iceland?
Divergent boundary
What is the earth’s only liquid layer?
Outer Core
What is Rift Formation?
when tectonics plates beneath the Earth’s surface spread apart from eachother
What type of crust is found under the continents?
Continental crust
True Or False: A earthquake can occur at a transform boundary?
True
Mountain formation can result when which of the following occurs?
Two continental plates collide.
What is the earth’s outermost layer?
Crust
The tectonic plates float on which semiliquid layer?
Asthenosphere
What is happening at the subduction zone of the Juan de Fuca and North American Plates?
One plate is being pulled under another.
What kind of plate boundary is found where the North American and Caribbean Plates meet?
Transform boundary
Which of these layers is found directly above the earth’s core?
Mantle
What kind of plate boundary is found at the meeting point of the Philippine and Pacific Plates?
Convergent boundary
When did the Himalayan Mountain Range begin to form?
40-50 million years ago
Which of these concepts is part of the theory of plate tectonics?
Continents are in slow constant motion.
Mid-ocean ridges are places where tectonic plates are doing what?
Spreading apart
What type of crust is found under the oceans?
Oceanic crust
California’s San Andreas Fault is identified as which of the following?
Strike-slip fault
