PLATE MOTIONS

Question 1

What is the theory that explains how Earth’s lithosphere is divided into several large, rigid plates that move relative to each other?

Answer 1

Plate tectonics

Question 2

Which type of plate boundary is characterized by plates moving apart from each other?

Answer 2

Divergent boundary

Question 3

At what type of plate boundary do earthquakes commonly occur?

Answer 3

Transform boundary

Question 4

What is the term for the process by which one tectonic plate moves beneath another tectonic plate?

Answer 4

Subduction

Question 5

What is the name for the supercontinent that existed about 300 million years ago where all the continents were joined together?

Answer 5

Pangaea

Question 6

What is the driving force behind plate tectonics?

Answer 6

Mantle convection

Question 7

In which layer of the Earth do tectonic plates move?

Answer 7

Lithosphere

Question 8

Which boundary is formed when two plates move towards each other?

Answer 8

Convergent boundary

Question 9

What type of boundary is responsible for the formation of mountain ranges?

Answer 9

Convergent boundary

Question 10

What type of boundary is the Mid-Atlantic Ridge an example of?

Answer 10

Divergent boundary

Question 11

Which scientist is credited with first proposing the theory of continental drift, a precursor to plate tectonics?

Answer 11

Alfred Wegener

Question 12

What is the name for the theory that suggests that Earth’s lithosphere is divided into plates that float on the semi-fluid asthenosphere?

Answer 12

Plate tectonics

Question 13

What is the term for the process of new oceanic crust forming at mid-ocean ridges and moving away from the ridge?

Answer 13

Seafloor spreading

Question 14

Which type of plate boundary is associated with volcanic activity?

Answer 14

Convergent boundary

Question 15

At what type of boundary do the plates slide past each other horizontally?

Answer 15

Transform boundary

Question 16

What is the name of the theory that suggests Earth’s lithosphere is broken into plates that move over the semi-fluid asthenosphere?

Answer 16

Plate tectonics

Question 17

What is the term for the process of continents drifting apart from each other over time?

Answer 17

Continental drift

Question 18

What is the name for the boundary where plates slide past each other horizontally?

Answer 18

Transform boundary

Question 19

What is the term for the bending of rock layers due to stress in the Earth’s crust?

Answer 19

Deformation

Question 20

What is the name of the supercontinent that existed about 600 million years ago before breaking apart?

Answer 20

Rodinia

Question 21

Which type of plate boundary is associated with the formation of deep ocean trenches?

Answer 21

Convergent boundary

Question 22

explained how the ocean arcos accumulated the denser elements then subsided to form basins,

Answer 22

continental assimilation hypothesis

Question 23

largest minor Plates

Answer 23

• Arabian plate
•Caribbean platech
•Cocos plate
• Juan de fuca plate
• Nazca plate
• Philippine plate
• Scotia plate

Question 24

Seven major plates

Answer 24

• African plate
• Antartic plate
• turasian plate
Indo-Australian plate
• North American plate
• Pacific plate
• South American plate

Question 25

happens when tectonic plates crash into each other instead of spreading apart

Answer 25

Subduction

Question 26

is a slow-spreading center. It spreads 2 to 5 cm per year and forms an ocean trench about the size of the Grand canyon in Anzong

Answer 26

Mid atlantic Ridge-

Question 27

are large mountain ranges rising from the ocean floor as a result of seafloor spreading

Answer 27

Mid-ocean ridges

Question 28

The upper layer of the crust is broken down into large slabs called

Answer 28

Plates

Question 29

EVIDENCE OF CONTINENTAL DRIFT THEORY

Answer 29

Matching Coastlines Fossil Evidence Geological Similarities Paleoclimatic Evidence