Tectonics & Geological Events

Question 1

The crust is the _______ layer of the Earth.

Answer 1

Outermost

Question 2

Beneath the crust, the _______ is a layer of __________-like material that is slowly moving.

Answer 2

Mantle, plastic

Question 3

The outer core is __________ liquid because of the high temperature and _________.

Answer 3

Molten, pressure

Question 4

The center layer of earth, which is ________ due to extreme ___________, is the inner core.

Answer 4

Solid, pressure

Question 5

Convection currents occur when heated material ____________ inside Earth’ mantle.

Answer 5

Rises

Question 6

Cooler material ____________inside Earth’s mantle.

Answer 6

Sinks

Question 7

Convection currents cause the ________ of tectonic plates.

Answer 7

Movement

Question 8

The theory of plate tectonics states that the Earth’s crust is _______into huge pieces called tectonic ______.

Answer 8

Divided, plates

Question 9

The plates move slowly on ________ of Earth’s upper mantle due to __________ currents.

Answer 9

Top, Convection

Question 10

The plates _______ each other as they move _______ the mantle.

Answer 10

Bump, across

Question 11

The plates move at approximately the _______ rate that our fingernails _______.

Answer 11

Same, grow

Question 12

The place where tectonic plates meet one another are called plate __________.

Answer 12

Boundaries

Question 13

There are _______ types of interactions between tectonic plates.

Answer 13

Three

Question 14

The three types of tectonic plate boundaries are:

Answer 14

Divergent, Convergent, and transform(?)

Question 15

The root word div in divergent means “to ___________.”

Answer 15

Separate

Question 16

Tectonic plates at divergent boundaries separate or move _______

Answer 16

apart

Question 17

New crust is created at ____ plate boundaries

Answer 17

Divergent

Question 18

Mid ocean ridges occur _________ at divergent plate ________. The mid Atlantic ridge is an example.

Answer 18

Underwater, boundaries

Question 19

Ocean _______ also occur at divergent plate boundaries. They are ___________ formed when two tectonic plates move apart from one another, creating new _______ crust.

Answer 19

Basins, __________?, oceanic

Question 20

Divergent oceanic boundaries are responsible for ______ spreading

Answer 20

Sea floor

Question 21

Sea floor ________ occurs when two plates slowly ________ away from each other. Molten magma ______ to fill this opening.

Answer 21

Spreading, move, rises

Question 22

This creates underwater mountain ranges called ______-_________ ridges.

Answer 22

Mid Ocean

Question 23

The ______ floor crust moves ______ on both sides of the ridge.

Answer 23

Older, away

Question 24

______ crust is located near the magma _______

Answer 24

Younger, ridge

Question 25

On _______, divergent plate boundaries can ______ rift valleys.

Answer 25

_____?, produce

Question 26

Land is pulled apart, making long, ________ depressions or __________

Answer 26

Narrow, trenches

Question 27

In the word convergent the prefix con means ________ and the word verge means to turn ________.

Answer 27

Together, __________(?)

Question 28

Tectonic plates at convergent boundaries _______ toward one another or _______ with one another.

Answer 28

Push, collide

Question 29

Earths crust is ________ at convergent plate boundaries

Answer 29

destroyed

Question 30

_________ building occurs when two plates ______ or push together such as the Himalayas or the _____ Mountains.

Answer 30

Mountain, converge, Andes

Question 31

When ______ crust and _______ crust push together the ocean plate ________, or slides under, the continental plate, and volcanic mountains form (such as the _____ of fire).

Answer 31

Continental, ______, _________, RIng

Question 32

_________ can also occur at convergent boundaries.

Answer 32

Earthquakes