Vocabulary
The outer layer of Earth made of hard, solid rock.
Crust
The three types of plate boundaries are...
The continents were joined together at one time in the past.
The landform created at a DIVERGENT boundary.
Mid-ocean ridge
TRUE or FALSE:
The Unit 4 Vocab list has the definition of continental drift.
TRUE
Sections of Earth's crust made of hard, solid rock that move.
Which type of plate boundary creates a mid-ocean ridge?
Divergent
Which type of plate boundary separated Pangea?
Divergent
What TWO landforms are created at CONVERGENT boundaries?
Volcanoes & trenches
What page are your Plate Boundary Notes on?
Page 63
Convergent, divergent and transform are the three types of movement where two plates meet.
Plate Boundaries
When two tectonic plates move towards each other, and one is subducted into the mantle.
Convergent
List THREE different pieces of evidence that prove the continental drift theory
same fossils on different continents, similar rock formations on different continents, shapes of continents, formation of mid-ocean ridges, magnetic particles in lava, seafloor spreading
The iconic landform created at the transform plate boundary off the coast of California.
San Andreas Fault
TRUE or FALSE:
The triceratops is the Nevada state fossil.
FALSE - It's the Ichthyosaur
The theory that the continents were once together as one supercontinent, and then separated over millions of years.
What causes tectonic plates to move?
convection currents in the mantle
How did the theory of plate tectonics support the theory of continental drift?
It explained HOW the continents moved.
TRUE OR FALSE:
The location of earthquakes and volcanoes on Earth's surface is evidence that Earth's crust is divided into tectonic plates.
TRUE
How many sentences should your written response answer be on the test?
AT LEAST 3 sentences - CER
The landform that is created at a divergent plate boundary when magma from the mantle is pushed up as the two tectonic plates move away from each other.
Mid-ocean ridge
How do we know that Earth's crust is divided into tectonic plates?
the location of earthquakes and volcanoes on Earth's surface
What is seafloor spreading?
New rock at mid-ocean ridges is formed at divergent boundaries. As the plates continue to spread apart over millions of years, the rock gets older the farther from the mid-ocean ridge
Explain how mid-ocean ridges are formed.
As tectonic plates spread apart, magma from the mantle rises up to fill in the gap, creating a chain of volcanoes underwater.
What are the two types of Earth's crust?