Plate Tectonics

Question 1

states that the earth’s outer mechanical layer, the lithosphere, is divided into large continent–sized plates that are constantly moving.

Answer 1

Plate Tectonics Theory

Question 2

are where the plates meet

Answer 2

Boundaries

Question 3

3 Types of Plate Tectonics Boundaries

Answer 3

• convergent boundary
• divergent boundary
• transform boundary

Question 4

what type of P.B:
→ ←

Answer 4

• Convergent
• collides or towards
• causes earthquake
• forms volcanoes and mountains

Question 5

what type of P.B:
← →

Answer 5

• Divergent
• away or spread apart
• fissures, cracks, and rifts occurs in the surface

Question 6

what type of P.B:
↑↓

Answer 6

• Transform
• slide past each other
• causes earthquake and tsunami

Question 7

Major Plate Tectonics

Answer 7

1. Pacific Plate
2. North American Plate
3. Eurasian Plate
4. African Plate
5. Antartic Plate
6. Indo-Australian Plate
7. South American Plate

Question 8

Minor Tectonic Plates

Answer 8

1. Nazca Plate
2. Philippine Plate
3. Arabian plate
4. Caribbean Plate
5. Cocos Plate
6. Scotia Plate
7. Juan de Fuca Plate

Question 9

2 types of layers of the earth

Answer 9

compositional (chemical)
mechanical (physical)

Question 10

are determined by their components or materials/elements

Answer 10

Compositional layers

Question 11

are determined by their physical properties or behavior/mechanism that happen in each layer

Answer 11

Mechanical layers

Question 12

Compositional Layers

Answer 12

1. crust
2. mantle
3. core

Question 13

Crust

Answer 13

outermost and thinnest layer of the earth

Question 14

Mantle

Answer 14

The thickest and most massive layer. The planet’s mantle consist of MAGMA

Question 15

Core

Answer 15

the innermost layer which is divided into separate regions. mostly made of IRON and NICKEL
- inner outer core
- solid inner core

Question 16

Mechanical Layers

Answer 16

1. Litosphere
2. Asthenosphere
3. Mesosphere
4. Outer Core
5. Inner Core

Question 17

Litosphere

Answer 17

the solid outer part of the earth, including brittle upper portion of mantle and crust

Question 18

Asthenosphere

Answer 18

the denser weaker layer beneath lithosperic mantle (not liquid). made of MAGMA

Question 19

Mesosphere

Answer 19

located beneath the asthenosphere. It encompasses the lower mantle, where material still flows but at a much slower
rate than the asthenosphere.

Question 20

Outer core (liquid)

Answer 20

extremely high temp that melt the metals

Question 21

Inner core (solid)

Answer 21

extremely high temp but it is in a solid form

Question 22

Why inner core isnt liquid?

Answer 22

due to extreme pressure.

Question 23

2 Types of Crust

Answer 23

• Continental Crust
• Oceanic Crust

Question 24

Continental crust

Answer 24

• thick, less dense and old
• 25 miles thick under the continents
• composed of GRANITE

Question 25

Oceanic crust

Answer 25

- thin, dense, sinks under and young - 3-5 miles thick under the oceans - composed of **BASALT**

Question 26

Transition zones

Answer 26

Discontinuities

Question 27

Conrad Discontinuity

Answer 27

- ***Victor Conrad*** - upper and lower crust

Question 28

Moho/Mohorovicic discontinuity

Answer 28

- ***Andrija Mohorovicic*** - lower crust and upper mantle

Question 29

Repetti discontinuity

Answer 29

- ***William C. Repetti*** - upper and lower mantle

Question 30

Gutenburg discontinuity

Answer 30

- ***Beno Gutenburg*** - lower mantle and outer core

Question 31

Lehmann discontinuity

Answer 31

- ***Inge Lehmann*** - outer and innner core

Question 32

oceans in the world

Answer 32

1. Pacifi Ocean 2. Arctic Ocean 3. Atlantic Ocean 4. Indian Ocean

Question 33

continents in the world

Answer 33

1. Asia 2. Africa 3. North America 4. South America 5. Antartica 6. Europe 7. Australia

Question 34

largest and smallest ocean in the world

Answer 34

largest: **Pacific Ocean** smallest: **Arctic Ocean**

Question 35

largest and smallest continent in the world

Answer 35

largest: **Asia** smallest: **Australia**