Tectonic Plates

Question 1

Distinguished based on their composition

Answer 1

Composition layers

Question 2

Is the thin hard outermost layer of the earth it covers about 0.8% of the earth’s volume

Answer 2

Crust

Question 3

One of the two types of Crust. It forms the ocean floor and is about 8 km thick

Answer 3

Oceanic Crust

Question 4

One of the two types of Crust. It forms the continents and is about 32 km thick

Answer 4

Continental Crust

Question 5

Oceanic crust is made up of dense to material such as

Answer 5

Basalt and Gabbro

Question 6

Continental crust consist primarily of

Answer 6

Granite and Gneiss

Question 7

Is the layer between the crust and the core. It is made of partially molten mixtures of silicate minerals and covers about 84% of the earth’s volume.

Answer 7

Mantle

Question 8

Is the extremely hot, dense center of the earth. It is composed mainly of nickel-iron alloy. It occupies about 16% of the earth’s volume.

Answer 8

Core

Question 9

They are distinguished based on rock strength and rigidity.

Answer 9

Mechanical Layers

Question 10

First mechanical layer. Consists of the crust and uppermost portion of the mantle

Rocks are stronger and more rigid than asthenosphere rocks

Answer 10

Lithosphere

Question 11

The first layer of mechanical layer is divided into several segments called

Answer 11

Tectonic Plates

Question 12

Major plates

Answer 12

Pacific Plate
North American plate
Eurasian Playe
African plate
antarctic plate
Indo-australian plate

Question 13

Consists of the upper mantle

Answer 13

Asthenosphere

Question 14

Is comprised of a lower mantle. It is between the asthenosphere and outer core

Answer 14

Mesosphere

Question 15

Is the liquid iron layer. That covers the inner core. The temperature in this layer is so high that rocks melt

Answer 15

Outer Core

Question 16

Is the solid iron center of the earth.

Rocks are rigid but not brittle

Answer 16

Inner core

Question 17

Suggest that tectonic plates are constantly moving relative to one another in the processes of plate construction and destruction.

Answer 17

Plate tectonic theory

Question 18

this german meteorologist and geophysicist proposed the idea of drifting continents in his book the origin of the continents and oceans in 1912

Answer 18

Alfred Lothar Wegener

Question 19

Phenomenon that is happening in the mantle of our earth. The parts that the mantle heats will rise upward. It will

Answer 19

Convection

Question 20

Are active regions on earth where tectonic plates interact

Answer 20

Plate Boundaries

Question 21

One of the three types of Plate boundaries. Are regions on earth where two tectonic plates are moving away from each other.

Answer 21

Divergent Boundary

Question 22

One of the types of Boundaries. These are regions on earth where two tectonic plates are moving toward each other.

Answer 22

Convergent Boundary

Question 23

One of the types of boundaries. These are regions on earth where two plates are sliding along side each other.

Answer 23

Transform Boundary