Earth Science WIP

Question 1

Continental Drift Theory

Answer 1

continents were once joined as one supercontinent and slowly drifted apart

Question 2

Alfred Wegener

Answer 2

proposed the continental drift theory

Question 3

Seafloor Spreading Theory

Answer 3

a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge

Question 4

Plate Tectonic Theory

Answer 4

the Earth’s crust is divided into different plates; occurrences of volcanoes and mountains are widespread in the boundaries of each plate

Question 5

Plate Boundaries

Answer 5

caused by convection currents in the mantle

Question 6

Convergent Boundaries

Answer 6

2 plates slide towards each other

Question 7

Mountain Ranges and high plateaus

Answer 7

Continental-continental convergent
(the older plate subducts under the younger plate)

Question 8

Trenches, Island and Volcanic Arcs

Answer 8

Oceanic-oceanic convergent (the older plate subducts under the younger plate)

Question 9

Trenches and Volcanic Arcs

Answer 9

Continental-oceanic convergent (the denser oceanic plate subducts under the less dense continental plate)

Question 10

Divergent Boundaries

Answer 10

plates slide apart from each other

Question 11

Rift Valley

Answer 11

Continental-continental divergent

Question 12

Mid-ocean ridge

Answer 12

Oceanic-oceanic divergent

Question 13

Transform Boundaries

Answer 13

plates slide pass each other

Question 14

Earthquakes

Answer 14

Transform

Question 15

Crust

Answer 15

outermost layer of the Earth

Question 16

Mantle

Answer 16

middle layer of the Earth; composed of molten rock called magma

Question 17

Outer core

Answer 17

layer of molten substance

Question 18

Inner core

Answer 18

layer of solid substance (due to pressure)

Question 19

Thinnest layer

Answer 19

Crust

Question 20

SiAl (Silicon and Aluminum)

Answer 20

Continental Crust

Question 21

1/3 of Earth’s surface

Answer 21

Continental Crust

Question 22

Mostly granite

Answer 22

Continental Crust

Question 23

2/3 of Earth’s surface

Answer 23

Oceanic Crust

Question 24

Mostly Basalt

Answer 24

Oceanic Crust

Question 25

SiMa (Silicon and Magnesium)

Answer 25

Oceanic Crust & Mantle

Question 26

84% of Earth’s Volume

Answer 26

Mantle

Question 27

NiFe (Nickel and Iron)

Answer 27

Core

Question 28

Lithosphere

Answer 28

rocky and stony part covering the surface of the Earth

Question 29

Asthenosphere

Answer 29

dense, weak layer below the crust with high temperature and pressure which makes rocks soft, semi-molten and ductile.

Question 30

Conrad Discontinuity

Answer 30

hydrosphere-crust

Question 31

Mohorovicic Discontinuity

Answer 31

crust-mantle

Question 32

Repetti Discontinuity

Answer 32

upper mantle-lower mantle

Question 33

Guttenberg Discontinuity

Answer 33

lower mantle-outer core

Question 34

Lehmann Discontinuity

Answer 34

outer core-inner core