Science 1st Prelim

Question 1

The 4 major layers of the Earth

Answer 1

Crust, mantle, outer core, and inner core

Question 2

Composed of lithosphere major and minor blocks

Answer 2

Tectonic Plates

Question 3

The outermost layer of the Earth

Answer 3

Crust

Question 4

5 - 70 km thick

Answer 4

Crust

Question 5

A semisolid, rocky, and very hot layer

Answer 5

Mantle

Question 6

2700 km thick

Answer 6

Mantle

Question 7

Layer that is liquid, and is made of molten nickel and iron

Answer 7

Outer core

Question 8

2270 km thick

Answer 8

Outer core

Question 9

The center of Earth, and has the hottest temperature

Answer 9

Inner core

Question 10

Diameter of 1220 km, and mostly composed of solid iron

Answer 10

Inner core

Question 11

Interface between the layers of crust and the upper mantle

Answer 11

Mohorovicic discontinuity

Question 12

Boundary between the lower mantle and the outer core

Answer 12

Gutenberg discontinuity

Question 13

Located between the liquid outer core and solid inner core

Answer 13

Lehmann discontinuity

Question 14

Only travels in the surface

Answer 14

Surface waves

Question 15

Travels through the inner layers of the planet

Answer 15

Body waves

Question 16

Two types of body waves

Answer 16

P and S waves

Question 17

First to be felt, travels at speed 1.5 and 8 km per second

Answer 17

Primary (P) waves

Question 18

Felt upside-down in motion, also called as transverse waves

Answer 18

Secondary (S) waves

Question 19

Is a supercontinent

Answer 19

Pangaea

Question 20

All of Earth or all lands

Answer 20

Pangaea

Question 21

Is a superocean

Answer 21

Panthalassa

Question 22

All seas

Answer 22

Panthalassa

Question 23

Earth cooled after its formation, its surface wrinkled, these wrinkles being the mountains on Earth’s surface

Answer 23

Contraction theory

Question 24

Who proposed the theory of continental drift in 1912

Answer 24

Alfred Wegener

Question 25

Two supercontinents are

Answer 25

Gondwana and Laurasia

Question 26

Who proposed the seafloor planning theory in 1960’s

Answer 26

Harry Sess

Question 27

This theory states that the seafloors and ocean floors - not the continents - move and carry the continents along

Answer 27

Seafloor planning theory

Question 28

This theory incorporates the continental drift and the seafloor spreading theory

Answer 28

Theory of plate tectonics

Question 29

This person predicts that the continents will form into a supercontinent

Answer 29

Christopher Scotese

Question 30

Supercontinent Pangaea Ultima meaning

Answer 30

The last Pangaea

Question 31

This either push tectonics plate toward one another or pull them apart

Answer 31

Driving forces

Question 32

This act against the driving forces of plate tectonics

Answer 32

Resisting forces