Download Plate Tectonics and Boundaries

Plate Tectonics & Plate Boundaries
Quick Write
In this chapter, you will learn about
the plate boundaries and movements.
Write down these questions and
answer them in complete sentences.
1. What is a plate boundary?
2. What are 3 types of boundaries?
3. Why do plates move?
1. Theory of plate tectonics?
Large crustal plates floating on
liquid (molten) inside of Earth.
2. Place where plates
meet?
Plate boundaries.
3. Types of
boundaries?
Convergent, divergent,
transform.
4. Convergent?
2 plates move towards
each other. ( )
5. Divergent?
2 plates move away from
each other. ( )
6. Transform?
2 plates move side by side.
(
)
Check for Understanding
The idea that large crust plates are floating on
molten Earth interior is called what?
What’s the location where plates meet?
What are the 3 plate boundaries?
7. Convergent?
Depends on types of crust
involved.
8. Crust types?
Oceanic (O) and
Continental (C).
9. 3 types of CPB?
OO, CC, OC
10. Characteristics:
Volcanoes, subduction
zones, trenches, mountain
ranges, earthquakes
11. Divergent?
Splits the crust
(rift).
12. Characteristics?
Mid-ocean ridges
(mountains), rift
valleys, magma,
earthquakes.
13. Transform
characteristics?
Violent EQs, no
magma or mountains
Movie
Check for Understanding
OO, CC, and OC are all
types of _______ boundaries.
Divergent or Convergent or Transform
What’s a difference between transform boundaries
and divergent/convergent boundaries?
14. Mantle convection?
Hot magma rises, cold
magma sinks, makes a big
circular pattern.
15. Rising?
Center of Earth is hotter,
magma is hotter and rises.
16. Sinking?
At the surface, magma cools
and sinks back to center.
17. Unanswered questions?
Unsure about how currents
started and their sizes.
Movie
Check for Understanding
What is the best explanation
for how the plates move?
Hotter material has a _____ density and rises.
Colder material has a _____ density and sinks.
Higher/Lower or Lower/Higher