Plate Tectonics

Question 1

What is another way of saying Earth’s crust and upper mantle?

Answer 1

Lithosphere

Question 2

What is the theory behind plate tectonics

Answer 2

The theory that pieces of Earth’s lithosphere are in constant motion, driven by convection currents in the mantle.

Question 3

What are the three types of boundaries?

Answer 3

Divergent, Convergent, Transform

Question 4

What is a divergent boundary?

Answer 4

The arrows moving in the opposite direction

Question 5

What is a convergent boundary?

Answer 5

When the arrows are pointing in the same direction

Question 6

What is a transformed boundary?

Answer 6

The arrows sliding past each other

Question 7

Alfred Wegener came up with the idea of what?

Answer 7

Continental

Question 8

What is the lithosphere broken up into?

Answer 8

Plates

Question 9

True or False: A section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust.

Answer 9

True

Question 10

Why do Earth quakes and volcanoes happen?

Answer 10

Because tectonic plates are in constant motion

Question 11

What are convection currents?

Answer 11

move the plates as the core heats the slowly-flowing asthenosphere (the elastic/plastic-like part of the mantle).

Question 12

Where do the edges of the Earth’s plates meet?

Answer 12

Plate Boundaries

Question 13

What is a fault?

Answer 13

Breaks in Earth’s crust where rocks have slipped past each other.

Question 14

True or False: A different type of plate movement occurs along each type of boundary.

Answer 14

True

Question 15

What is a plate boundary?

Answer 15

A plate boundary where two plates move towards each other.

Question 16

What does rifting called?

Answer 16

Seafloor Spreading

Question 17

How is the rock pulled at Divergent Boundaries?

Answer 17

Rock gets THIN in the middle as it is pulled apart.

Question 18

What is this stress called?

Answer 18

Tension

Question 19

What happens when the rock SNAPS from the Stress of Tension?

Answer 19

A Normal Fault

Question 20

True or False: A rock drops down when it breaks?

Answer 20

True

Question 21

What happens next at Divergent Boundaries?

Answer 21

A rift valley can occur

Question 22

You need to look at pictures for rift valleys

Answer 22

Sea-floor Spreading

Question 23

What is seafloor spreading?

Answer 23

Occurs at divergent boundary, As tectonic plates slowly move away from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense.

Question 24

True or False: The Athensophere pulls apart and the lithosphere is at the bottom where the magma is

Answer 24

False: The lithosphere is being pulled apart and the athenosphere is at the bottom where the magma is

Question 25

What are some features of divergent boundaries?

Answer 25

Mid-Ocean Ridges Rift Valleys Fissure Volcanoes

Question 26

True or False: A plate boundary where two plates move towards each other.

Answer 26

True

Question 27

Convergent boundaries can have two plates what?

Answer 27

Colliding

Question 28

What is this stress called?

Answer 28

Compression

Question 29

What happens when plates crash and collide against each other?

Answer 29

Subduct each other ( one sinks under the other)

Question 30

What are three examples of subduction?

Answer 30

The Peru/Chile Trench-Eurasian Plate/South American Plate Japan Trench- Eurasian Plate/ Pacific Plate Himalayas- Indian: Australian Plate/ Eurasian

Question 31

What is the first type of convergent boundary?

Answer 31

The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.

Question 32

What is a subduction zone?

Answer 32

The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.

Question 33

What occurs at subduction zones?

Answer 33

Volcanoes

Question 34

What is the second type of convergent boundary?

Answer 34

Ocean plate colliding with another ocean plate

Question 35

True or False: The more dense plate slides under the less dense plate creating a subduction zone called a TRENCH

Answer 35

True

Question 36

What is an example of the second type? | Conversion

Answer 36

Aleutian Islands, Alaska

Question 37

What is the third type of convergent boundary?

Answer 37

A continental plate colliding with another continental plate

Question 38

What is a collision zone?

Answer 38

A place where folded and thrust faulted mountains form.

Question 39

What is an example of a folded mountain?

Answer 39

Himalayas, or Rockies

Question 40

What happens when the rock is squeezed from the Stress of Compression?

Answer 40

A Reversed Fault

Question 41

What is a reverse fault?

Answer 41

Rock is forced upward as it is squeezed.

Question 42

How is the rock broken at Transform Boundaries?

Answer 42

Rock is pushed in two opposite directions (or sideways, but no rock is lost)

Question 43

What is this stress called?

Answer 43

Shearing

Question 44

What happens after Transform Boundary?

Answer 44

May cause earthquakes when the rock snaps from pressure Or Faults like the San Andreas Fault in California.

Question 45

What happens when the rock is sheared (or “cut”) from the Stress of Shearing?

Answer 45

A strick-slip fault Rocks on each side of the fault slip past each other as they break.

Question 46

True or False: Shearing means a force causing deformation by slippage along a plane

Answer 46

True

Question 47

Transform boundaries run like what?

Answer 47

Trains run past ecah other in different directions and it causes the ground to shake.

Question 48

Check the pictures on every slide and study them well

Answer 48

Do It!!!!!!!!!!!!!