plate tectonics

Question 1

the idea that the earth’s crust and upper mantle are broken into sections called plates that move around on the mantle

Answer 1

theory of plate tectonics

Question 2

how are plates driven?

Answer 2

by gravity and by cooling of earth (convection)

Question 3

tectonic plates are also called

Answer 3

lithospheric plates

Question 4

how thicc are tectonic plates?

Answer 4

100km

Question 5

the earth once had a single land mass called PANGAEA that broke apart into pieces that drifted away to become major continents

Answer 5

theory of continental drift

Question 6

nejej

Answer 6

hdejeh

Question 7

largest geological features on the planet that is resulted by an oceanic divergent plate boundary

Answer 7

mid ocean ridge

Question 8

mostly underwater mountain range in the atlantic ocean

Answer 8

The Mid-Atlantic Ridge (MAR)

Question 9

Continental Divergent plate boundary

Answer 9

rift valley

Question 10

volcanic island arcs, trenches & earthquakes occur when older ocean plate subducts a younger ocean plate. Ex. Mariana Trench

Answer 10

ocean-ocean convergent boundary

Question 11

Mountains, Volcanoes, and Earthquakes occur. The oceanic plate melts; less dense magma rises to form volcanoes Ex: Andes, Cascade Range, Sierra Nevada

Answer 11

Ocean-Continent Convergent boundary

Question 12

Mountains form and earthquakes occur. Ex: Himalayas and Alps

Answer 12

Continent-Continent Convergent boundary

Question 13

San Andreas Fault in California

Answer 13

Strike-Slip Fault or Transform Fault

Question 14

bending, tilting, and breaking of the Earth’s crust. Its major cause is plate tectonics

Answer 14

deformation

Question 15

force per unit area applied on the rock

Answer 15

stress

Question 16

change in shape or volume of the rock that experienced stress

Answer 16

strain

Question 17

Three kinds of strain

Answer 17

compressional ➡️⬅️, tensional⬅️➡️, shear⬆️⬇️

Question 18

when a rock experiences stress and does not break

Answer 18

folding

Question 19

a fold that is convex up and has its oldest beds at its core

Answer 19

anticline

Question 20

a simple bend in the rock layers so that they are no longer horizontal

Answer 20

monocline

Question 21

a concave fold with younger layers closer to the center of the structure

Answer 21

syncline

Question 22

when the rock experiences stress and breaks

Answer 22

fault

Question 23

the side that is above the fault plane

Answer 23

hanging wall ↘️

Question 24

the block which would be under the feet of a person standing in a tunnel on the fault plane

Answer 24

↖️foot wall

Question 25

when the hanging wall moves down ⬅️➡️

Answer 25

normal fault

Question 26

when the hanging wall moves up ➡️⬅️

Answer 26

reverse fault

Question 27

a low angle REVERSE fault is called a

Answer 27

thrust fault

Question 28

where do earthquakes happen

Answer 28

at or near the boundaries between earth’s tectonic plates.

Question 29

occurs when rock below the earth’s surface moves abruptly

Answer 29

earthquake