Earth's Structure and Plate Tectonics

Question 1

is a dense ball of elements iron and nickel that has two layers.

Answer 1

The Core

Question 2

is the solid part of the core and made up primarily of iron.

Answer 2

Inner Core

Question 3

this part of the core cannot melt due to pressure.

Answer 3

Inner Core

Question 4

is the liquid part of the core that is made up of molten nickel and iron.

Answer 4

Outer Core

Question 5

this part of the core generates the magnetic field.

Answer 5

Inner Core

Question 6

this part of the core maintains the magnetic field.

Answer 6

Outer Core

Question 7

(True or False)

the earth’s constant rotations cause the earth’s magnetism.

Answer 7

True

Question 8

is the middle part of the earth. The layer begins from the bottom of the crust and ends at the surface of the outer core.

Answer 8

The Mantle

Question 9

mineralization occurs in this layer (of the mantle).

Answer 9

Upper Mantle

Question 10

seismic activities occur in this layer (of the mantle).

Answer 10

Lower Mantle

Question 11

This layer of the earth is also responsible for convection currents (causes activities on the lithosphere).

Answer 11

The Mantle

Question 12

is the outer part of the earth made up of solid materials but these materials is not everywhere the same.

Answer 12

The Crust

Question 13

is thinner than other layers.

Answer 13

The Crust

Question 14

this type of crust is made of heavy rocks like basalt. It also underlines the ocean basins.

Answer 14

Oceanic Crust

Question 15

this crust is thicker than oceanic crust. Mainly made up of light materials like granite. It also underlines the continents.

Answer 15

Continental Crust

Question 16

was a theory that explained how continents shift position on earth’s structure.

Answer 16

Continental Drift

Question 17

is a continuous slow movement of plates from one place to another.

Answer 17

Drift

Question 18

is a tectonic boundary where two plates are moving away from each other and new crust is forming from the magma that rises to the earth’s surface between the two plates.

Answer 18

Divergent Plate Boundary

Question 19

also known as a destructive plate boundary (because of subduction).

Answer 19

Convergent boundary

Question 20

is an actively deforming region where two (or more) tectonic plates or fragments of the lithosphere move toward one another and collide.

Answer 20

Convergent boundary

Question 21

also known as conservative plate boundary.

Answer 21

Transform Fault or Transform Boundary

Question 22

is when two tectonic plates slide passed each other that can cause earthquake.

Answer 22

Transform Fault or Transform Boundary

Question 23

happens at CONVERGENT PLATE BOUNDARIES where two plates move toward each other.

Answer 23

Compressive Stress

Question 24

happens at DIVERGENT PLATE BOUNDARIES where two plates are moving away from each other.

Answer 24

Tensional Stress

Question 25

is experienced at TRANSFORM BOUNDARIES where two plates are sliding past each other.

Answer 25

Shear Stress

Question 26

what are the evidences of continental drift?

there are six evidences

Answer 26

1. Shifting of magnetic poles
2. Similar rock formations
3. Fossils
4. Pangaea
5. Coal deposition
6. Edges of continents that fit with each other

Question 27

is a place in crust where plates meet. Region where Earth’s crust meet.

Answer 27

Subduction Zone

Question 28

is when one tectonic plate bends beneath the other. It is also the process to destroy old lithosphere.

Answer 28

Subduction

Question 29

When an oceanic crust meets oceanic crust, they may form what? (4 answers)

Answer 29

1. Island arc
2. Ocean trench
3. Submarine volcano
4. mid-ocean ridge

Question 30

when an oceanic crust meets continental crust, they may form what? (2 answers)

Answer 30

1. Mountain

2. Mountain range

Question 31

when continental crust meets continental crust, they may form what? (2 answers)

Answer 31

1. LARGE Mountain ranges

2. Rift Valley

Question 32

are moveable segment of the earth’s crust.

Answer 32

Plates

Question 33

this kind of plate has an area of greater than 20 million km squared.

Answer 33

Major Plate

Question 34

this kind of plate is less than 20 million km squared but greater than 1 million km squared

Answer 34

Minor Plate

Question 35

What are the Major Plates? (7 answers)

Answer 35

1. North American
2. Eurasian
3. Australian & Indian (Indo-Australian)
4. African
5. South American
6. Antartic
7. Pacific

Question 36

What are the Minor Plates? (7 answers)

Answer 36

1. Arabian
2. Carribean
3. Cocos
4. Scotia
5. Nazca
6. Juan De Fuca
7. Philippines