Scienceas

Question 1

intensity and magnitude may be described in terms of

Answer 1

Earthquakes

Question 2

Earthquakes are caused by

Answer 2

stress

Question 3

tension, shearing, and compression may result in

Answer 3

faults and folds

Question 3

stress may be due to

Answer 3

tension, shearing, and compression

Question 4

faults are classified as

Answer 4

reverse, normal, and strike slip

Question 5

is the boundary between the earths crust and mantle

Answer 5

Moborovicic disconuinity

Question 6

the mohorovicic disconuinity was first identified by

Answer 6

Andrijia Mohorovicic in 1909

Question 7

makes up by 85 percent of earths volume

Answer 7

mantle

Question 8

is composed of iron and nickel alloy.

Answer 8

core

Question 9

proposed the existence of a supercontinent he called Pangaea in his account of the origins and continents.

Answer 9

German meteorologist Alfred Wegener

Question 10

that at one time these two continents had been joined together and slowly drifted apart

Answer 10

Continental drift theory

Question 11

called the nothern half

Answer 11

Laurasia

Question 12

southern half

Answer 12

Gondwanaland

Question 13

seperated by a big body of water called

Answer 13

Tethys Sea

Question 14

deals with the study of the record of earth’s magnetic field in rocks is called

Answer 14

paleomagnetisim

Question 15

Suggests that the Earth is divided into seven large plates and small rigid plates

Answer 15

plate tectonics

Question 16

is the region where plates meet

Answer 16

plate boundary

Question 17

types of boundaries (3)

Answer 17

Transform , Convergent , and Divergent

Question 18

two plates slide each other horizontally

Answer 18

Transform boundary

Question 19

is the most active type of boundary

Answer 19

Convergent boundary

Question 20

when the sinking occurs is called the

Answer 20

subduction zone

Question 21

is the deepest part of an ocean floor

Answer 21

trench

Question 22

triggeresd by the melting of subducting the atmosphere

Answer 22

Volcanic activity

Question 23

when plates move apart

Answer 23

DIvergent boundary

Question 24

are sites where earths crust are growing

Answer 24

boundaries

Question 25

continous chain of volcanic mountains and rifts is called

Answer 25

mid-ocean ridges

Question 26

is a rift zone in the middle of the ocean

Answer 26

Mid-Atlantic ocean

Question 27

refers to all the movements in the lithosphere

Answer 27

Diastrophism

Question 28

stress that rocks undergo may be due to

Answer 28

Tension , Compression , and shearing forces.

Question 29

stretch or pull rock layers

Answer 29

Tension

Question 30

push rock layers

Answer 30

Compression

Question 31

makes rock layers slide

Answer 31

Shearing forces

Question 32

causes rock layers to break

Answer 32

compressional or tensional

Question 33

deformed or disturbed rocks

Answer 33

Mountains

Question 34

the bending of the rock layer upward

Answer 34

anticline

Question 35

breaks and causes tremors

Answer 35

faulting

Question 35

strengths or elastic limits, they snap and an earthquake occurs

Answer 35

elastic rebound theory

Question 36

occurs when one block of rock moves down and another moves up

Answer 36

normal fault

Question 37

produces a horizontal displacement

Answer 37

strike-slip fault

Question 38

form ridges along the fault line

Answer 38

fault scarps

Question 39

combination of a strike-slip fault and a normal fault

Answer 39

oblique slip fault

Question 40

one block moves upward in relation to another

Answer 40

thrst or reverse fault

Question 41

produced when rock layers break and release energy

Answer 41

Seismic waves

Question 42

Earth in the form of strain in rock layers is released

Answer 42

Earthquakes

Question 43

The point on the surface of earth above the focus is called the

Answer 43

epicenter

Question 44

Movement in the tectonic plats produces two types of seismic waves

Answer 44

body waves and surface waves

Question 45

Waves that propagate through the earth's interior

Answer 45

Body waves

Question 46

propogate through medium faster than the other seismic wave

Answer 46

Surface waves

Question 47

propagate through the medium slower than P waves

Answer 47

Secondary waves

Question 48

named after british geophyscist, are the fastest surface waves

Answer 48

Augustus Love , Love waves

Question 49

roll around just like a wave rolls across a lake or ocean , named by briish physical scientist

Answer 49

John William Strut , Rayleigh Waves

Question 50

describes the amount of energy at the focus of origin

Answer 50

magnitude

Question 50

two ways scientists quanify the size of an earthquake

Answer 50

intensity and magnitude

Question 51

is measured by its perceivable damage

Answer 51

intensity

Question 52

Types of fault

Answer 52

normal, strike-slip, oblique slip, and reverse fault

Question 53

3 main layers of the earth

Answer 53

Crust , mantle , and core.

Question 54

instruments predicting an earthquake

Answer 54

Seismometer , seismograph, laser range funer, tide gauge, geiger counter , global posting system