Earthquakes

Question 1

Any shaking of the ground

Answer 1

Earthquake

Question 2

The source can be natural or man-made

Answer 2

Earthquake

Question 3

A sudden & violent shaking of the ground sometimes causing great destruction

Answer 3

Earthquake

Question 4

How many earthquakes hit the philippines with a magnitude of more than 6.0 from 1600’s - 2015

Answer 4

106

Question 5

What island in the philippines haven’t experienced any earthquakes?

Answer 5

Palawan

Question 6

Palawan has no…

Answer 6

Active faults

Question 7

What makes the palawan become earthquake-free?

Answer 7

Because the rocks of the islamd is continental unlike the other parts of the country which is oceanic and quite old

Question 8

The crust of palawan is…

Answer 8

Thicker and older than the other islamds in the philippines

Question 9

Philippines is located or one of the places where…

Answer 9

Pacific ring of fire is lying

Question 10

The west valley fault measures…

Answer 10

100 km

Question 11

Where the seismic waves form in a curcular motion

Answer 11

Focus

Question 12

What causes an earthquake?

Answer 12

Plate boundaries (whem plates move)&raquo_space; Stress (it will cause a particular stress)&raquo_space; making Seismic Waves&raquo_space; causing Earthquakes to form

Question 13

Movement or behavior of plates

Answer 13

Plate boundaries

Question 14

It is a movement of plates which 2 plates collide

Answer 14

Convergent

Question 15

It is a movement of plates which 2 plates divide

Answer 15

Divergent

Question 16

It is a movement of plate which 2 olates slide past each other

Answer 16

Transform

Question 17

Type of stress: occurs when pushed intl one another causing mountains to form

Answer 17

Compressional stress

Question 18

Type of stress: where rocks are pulled apart (opposote sides) and can cause lakes,valleys etc

Answer 18

Tensional

Question 19

Type of stress: where rocks are pulled apart (opposote sides) and can cause lakes,valleys etc

Answer 19

Tensional

Question 20

Type of stress: where plates slide past each other (opposite sides)

Answer 20

Shear

Question 21

Elastic rebound theory

Answer 21

1. Original position
2. Deformation or the rock bends until the strength of rock is exceeded
3. Rupture & release of energy
4. Rocks rebound to original undefined shape

Question 22

Before tremors and can be determined by animals

Answer 22

Foreshock

Question 23

After tremors

Answer 23

Aftershock

Question 24

Where the earthquake or seismic waves originate inside the Earth

Answer 24

Focus

Question 25

The point on the Earth’s surface located directly above the focus of an earthquake

Answer 25

Epicenter

Question 26

2 types of seismie waves

Answer 26

Body and surface waves

Question 27

Type of seismic wave thay is inside esrth and can travel throuhh earth’s inner layers (core.mantle.crust)

Answer 27

Body waves

Question 28

2 classifications of body waves

Answer 28

Primary and secondary waves

Question 29

Fastest orm of wave, sometimes compressional waves

Answer 29

Primary waves (p-waves)

Question 30

Can travel in both solids and liquids

Answer 30

Primary waves

Question 31

-Back & forth, push & pull
-horizontal
DIRECTION : right
PROPAGATION : right
Meaning it is longitudinal

Answer 31

Primary waves

Question 32

Can only travel through solids

Answer 32

Secondary waves

Question 33

Can only travel through solids

Answer 33

Secondary waves

Question 34

Direction : up & down
Propagation : right
Means it is perpendicular

Answer 34

Secondary waves

Question 35

A type of seismic wave that can only travel through the surface (crust)

Answer 35

Surface waves

Question 36

• Eliptical in motion
• rolling up & down,side to side
• creates greater destruction

Answer 36

Rayleigh waves (r-waves)

Question 37

• horizontal in motion

- moves the grpund side to side only

Answer 37

Love waves (L-waves)