Science 2nd Monthly

Question 1

Sudden shaking of the ground

Answer 1

Earthquake

Question 2

Geoelogical Forces

Answer 2

Tectonic Earthquake

Question 3

Volcanic earthquake

Answer 3

due to volcanic activities

Question 4

Rock Explosions

Answer 4

Collapse Earthquake

Question 5

Caused by nuclear or chemical device

Answer 5

Explosion Earthquake

Question 5

Directly above focus

Answer 5

Epicenter

Question 6

earthquake starts

Answer 6

hypocenter/focus

Question 7

Size or strenght of an earthquake

Answer 7

Magnitude

Question 8

To measure magnitude u need a?

Answer 8

seismograph

Question 9

The amount of shaking and type of damage.

Answer 9

Intensity

Question 9

this scale can also be used to know what type of magnitude.

Answer 9

Richter Scale

Question 10

In order to measure intensity u need to use

Answer 10

Rossi Forel scale and Mercalli scale.

Question 11

PEIS

Answer 11

PHIVOLCS Earthquake Intensity Scale

Question 12

I

Answer 12

Scarcely Perciptable

Question 13

II

Answer 13

slightly felt

Question 14

III

Answer 14

weak

Question 15

IV

Answer 15

moderately strong

Question 16

V

Answer 16

strong

Question 17

VI

Answer 17

very strong

Question 18

VII

Answer 18

destructive

Question 19

VIII

Answer 19

very destructive

Question 20

IX

Answer 20

devastating

Question 21

X

Answer 21

completely devastating

Question 22

Caused by underwater earthquake or volcanic activity

Answer 22

Tsunami

Question 23

soil loses its strength

Answer 23

Liquefaction

Question 24

developed through short circuit

Answer 24

fire

Question 25

Downward movement of the mass rock

Answer 25

Landslide

Question 26

Does damage to man-made structures.

Answer 26

Structural Collapse

Question 27

fracture found between 2 blocks of the earth’s crust

Answer 27

Fault

Question 28

disturbance or crack

Answer 28

Fault trace/line

Question 29

where the rupture has taken place

Answer 29

Fault Plane

Question 30

wall above the fault plane

Answer 30

Hanging wall

Question 31

wall below the fault plane

Answer 31

Foot Wall

Question 32

The hanging wall moves down relative to the footwall (what kind of fault type is this?)

Answer 32

Normal

Question 33

The hanging wall moves up relative to the footwall. (what kind of fault type is this?)

Answer 33

Reverse

Question 34

motion of blocks moving either right or left. (what kind of fault type is this?)

Answer 34

Strike - Slip

Question 35

It is considered active if they observe or have evidence that there has been activity in the last 10,000 years.

Answer 35

Active fault

Question 36

cannot produce any more seismic activity or earthquakes

Answer 36

Inactive Fault

Question 37

Mechanical waves that are caused by the sudden movement of materials within the Earth, such as slip along a fault during an earthquake.

Answer 37

Seismic Waves

Question 38

travel through the interior part of the earth.

Answer 38

Body waves

Question 39

travel through the surface part of the earth

Answer 39

Surface waves

Question 40

Types of body waves

Answer 40

P wave & S wave

Question 41

Types of surface wave

Answer 41

Rayleigh Wave & Love wave

Question 42

Moves in a side-to-side motion perpendicular to the main propagation of the earthquake.

Answer 42

Love wave

Question 43

Moves in an up and down and forward and backward motion

Answer 43

Rayleigh Wave

Question 44

fastest out of all waves

Answer 44

P wave/ Primary Wave

Question 45

They can displace rocks and are transverse waves.

Answer 45

S wave/ Secondary Wave

Question 46

PHIVOLCS

Answer 46

Philippine Institute of Volcanology and Seismology