continetial drift pangea

pangea

**Which of the following geologic events can occur at a transform boundary?**

**Mountain formation**

**Approximately 225 million years ago, the earth's continents were grouped into one landmass. What is the landmass called?**

**Pangaea**

**What kind of plate boundary is found at the meeting point of the Philippine and Pacific Plates**

Convergent

**Which of these layers is found directly above the earth's core?**

Mantle

**What type of crust is found under the oceans?**

oceanic crust

**What kind of plate boundary is found where the North American and Caribbean Plates meet?**

Transform

true or false: ***Continental crust is thicker than oceanic crust.***

true

**What is NOT likely to happen at a divergent boundary?**

mountain formation

**When did the Himalayan Mountain Range begin to form?**

40-50 million years ago

What is earth’s only liquid layer?

outer core

**What kind of plate boundary runs across Iceland?**

divergent

**Which of the earth's layers is broken into several large tectonic plates?**

lithosphere

**California's San Andreas Fault is identified as which of the following?**

strike slip fault

**When did the supercontinent Pangaea start to break up?**

200 million years ago

**Which scientist is credited with proposing the ideas that led to the development of the plate tectonics theory?**

Alfred Wegener

**What is the earth's outermost layer?**

Crust

**Mountain formation can result when which of the following occurs?**

**Two continental plates collide.**

**What type of crust is found under the continents?**

**Continental crust**

**What leads to the creation of island arcs?**

**Collision of two oceanic plates.**

**This solid layer of the earth is made of mostly iron and nickel**

Inner Core

**What is happening at the subduction zone of the Juan de Fuca and North American Plates?**

**One plate is being pulled under another.**

**Which of these concepts is part of the theory of plate tectonics?**

**Continents are in slow constant motion.**

**What is the border between two tectonic plates called?**

Boundary

**The tectonic plates float on which semiliquid layer?**

Asthensosphere

**Mid-ocean ridges are places where tectonic plates are doing what?**

**Spreading apart**